<SEC-DOCUMENT>0001047469-14-004660.txt : 20140507
<SEC-HEADER>0001047469-14-004660.hdr.sgml : 20140507
<ACCEPTANCE-DATETIME>20140507060112
ACCESSION NUMBER:		0001047469-14-004660
CONFORMED SUBMISSION TYPE:	424B5
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20140507
DATE AS OF CHANGE:		20140507

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Aon plc
		CENTRAL INDEX KEY:			0000315293
		STANDARD INDUSTRIAL CLASSIFICATION:	INSURANCE AGENTS BROKERS & SERVICES [6411]
		IRS NUMBER:				363051915
		STATE OF INCORPORATION:			X0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B5
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-183686
		FILM NUMBER:		14818748

	BUSINESS ADDRESS:	
		STREET 1:		8 DEVONSHIRE SQUARE
		CITY:			LONDON
		STATE:			X0
		ZIP:			EC2M 4PL
		BUSINESS PHONE:		(44) 20 7623 5500

	MAIL ADDRESS:	
		STREET 1:		8 DEVONSHIRE SQUARE
		CITY:			LONDON
		STATE:			X0
		ZIP:			EC2M 4PL

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AON CORP
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMBINED INTERNATIONAL CORP
		DATE OF NAME CHANGE:	19870504

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Aon Corp
		CENTRAL INDEX KEY:			0001556748
		IRS NUMBER:				363051915
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B5
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-183686-01
		FILM NUMBER:		14818749

	BUSINESS ADDRESS:	
		STREET 1:		200 EAST RANDOLPH STREET
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601
		BUSINESS PHONE:		312-381-1000

	MAIL ADDRESS:	
		STREET 1:		200 EAST RANDOLPH STREET
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B5
<SEQUENCE>1
<FILENAME>a2220048z424b5.htm
<DESCRIPTION>424B5
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Use these links to rapidly review the document<BR>
<A HREF="#bg79801_table_of_contents">  TABLE OF CONTENTS</A><BR></font>
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<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>


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</FONT><FONT COLOR="#FF4040" SIZE=2><B>The information in this preliminary prospectus supplement is not complete and may be changed. This
preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities and are not soliciting an offer to buy these securities in any jurisdiction where the offer
or sale is not permitted.</B></FONT></P>

<P ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>Filed Pursuant to Rule&nbsp;424(b)(5)<BR>
Registration File No.&nbsp;333-183686 </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B>


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</B></FONT><FONT COLOR="#FF4040" SIZE=2><B>Subject to Completion<BR>
Preliminary Prospectus Supplement dated May 7, 2014.  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B>Prospectus Supplement<BR>
(To Prospectus Dated August&nbsp;31, 2012)  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=4><B>&euro;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=4><B>
<IMG SRC="g408983.jpg" ALT="LOGO" WIDTH="94" HEIGHT="40">
  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=5><B>Aon&nbsp;plc<BR>  </B></FONT><FONT SIZE=4><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% Senior Notes due 2026<BR>
With a full and unconditional guarantee as to payment of<BR>
principal and interest by Aon Corporation  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc is offering &euro;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;aggregate principal amount
of&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% senior notes due 2026 (the "Notes"). The
Notes will mature on&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2026. Aon&nbsp;plc will pay interest on the Notes on&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;of each
year, commencing on&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2015. The Notes will be issued in minimum
denominations of &euro;100,000 and integral multiples of &euro;1,000 in excess thereof. Aon&nbsp;plc may redeem all of the Notes at any time, and some of the Notes from time to
time, at the redemption prices set forth in this prospectus supplement under "Description of the Securities&#151;Optional Redemption." Aon&nbsp;plc may also redeem all of the Notes at a
redemption price equal to 100% of their principal amount plus accrued and unpaid interest, if any, to the redemption date in the event of certain changes in respect of withholding taxes applicable to
the Notes and Guarantee, as described in this prospectus supplement under "Description of the Securities&#151;Optional Tax Redemption." </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Notes will be fully and unconditionally guaranteed by Aon Corporation, or Aon Delaware (the "Guarantee" and, together with the Notes, the "Securities"). </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Notes will be Aon&nbsp;plc's general unsecured and unsubordinated obligations and will rank equally with each other and with all of Aon&nbsp;plc's other present and future
unsecured and unsubordinated obligations. The Notes will not have the benefit of all of the covenants applicable to some of Aon&nbsp;plc's existing unsecured senior debt. The Notes will be
effectively subordinated to any secured debt Aon&nbsp;plc may have or incur in the future to the extent of the value of the assets securing such indebtedness. The Notes will be structurally
subordinated to the debt and all other obligations of Aon&nbsp;plc's subsidiaries (though you may have a direct claim as to Aon Delaware by virtue of its obligations with respect to the Guarantee). </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Guarantee will be a general unsecured and unsubordinated obligation of Aon Delaware and will rank equally with all of Aon Delaware's other present and future unsecured and
unsubordinated obligations. The Guarantee will not have the benefit of all of the covenants applicable to some of Aon Delaware's existing unsecured senior debt. The Guarantee will be effectively
subordinated to any secured debt Aon Delaware may have or incur in the future to the extent of the value of the assets securing such indebtedness. The Guarantee will be structurally subordinated to
the debt and all other obligations of Aon Delaware's subsidiaries. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
intend to apply to list the Notes on the New York Stock Exchange or another "recognised stock exchange" for purposes of Section&nbsp;1005 of the U.K. Income Tax Act 2007. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=3><B>Investing in the Securities involves a high degree of risk. See "Risk Factors" beginning on page&nbsp;S-13 of this prospectus
supplement.</B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><B>Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these
Securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.</B></FONT></P>

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<TD WIDTH="96" style="font-family:times;"></TD>
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<TD style="font-family:times;"><p style="font-family:times;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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<TD COLSPAN=7 VALIGN="BOTTOM" style="font-family:times;border-bottom:double #000000 2.25pt;">&nbsp;</TD>
<TD VALIGN="BOTTOM" style="font-family:times;">&nbsp;</TD>
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<TH ALIGN="CENTER" style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;"><FONT SIZE=1><B>Per Note</B></FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;"><FONT SIZE=1><B>Total</B></FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
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<TD COLSPAN=7 VALIGN="BOTTOM" style="font-family:times;border-bottom:solid #000000 1.0pt;">&nbsp;</TD>
<TD VALIGN="BOTTOM" style="font-family:times;">&nbsp;</TD>
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<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:8pt;text-indent:-8pt;"><FONT SIZE=1><B> </B></FONT><FONT SIZE=2>Public offering price</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>%</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&euro;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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<TD COLSPAN=7 VALIGN="BOTTOM" style="font-family:times;border-bottom:solid #000000 1.0pt;">&nbsp;</TD>
<TD VALIGN="BOTTOM" style="font-family:times;">&nbsp;</TD>
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<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Underwriting discount</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>%</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&euro;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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<TD COLSPAN=7 VALIGN="BOTTOM" style="font-family:times;border-bottom:solid #000000 1.0pt;">&nbsp;</TD>
<TD VALIGN="BOTTOM" style="font-family:times;">&nbsp;</TD>
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<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Proceeds to us (before expenses)</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>%</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&euro;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
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<TD COLSPAN=7 VALIGN="BOTTOM" style="font-family:times;border-bottom:double #000000 2.25pt;"><p style="font-family:times;margin-left:9pt;text-indent:-9pt;"> &nbsp;</TD>
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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest
on the Notes will accrue from May&nbsp;&nbsp;&nbsp;&nbsp;, 2014. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
underwriters expect to deliver the Securities for purchase on or about&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2014, which is the fifth London business day following the date of this prospectus
supplement,
in book-entry form through the facilities of Clearstream Banking, </FONT><FONT SIZE=2><I>soci&eacute;t&eacute; anonyme</I></FONT><FONT SIZE=2>, and Euroclear Bank&nbsp;S.A./N.V. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><I>Joint Book-Running Managers  </I></FONT></P>
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<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=4><B>Credit Suisse</B></FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=4>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=4><B> Barclays</B></FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=4>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=4><B> Deutsche Bank</B></FONT></TD>
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 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>The date of this prospectus supplement is May&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2014. </FONT></P>

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<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

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NAME="BG79801A_main_toc"></A> </FONT></P>

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<BR></FONT><FONT SIZE=2><B>  TABLE OF CONTENTS    <BR>    </B></FONT></P>

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<A NAME="BG79801_TOC"></A> </FONT></P>
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<p style="font-family:times;"></FONT></P>

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<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Page </B></FONT></TH>
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<TD ALIGN="CENTER" VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Prospectus Supplement</B></FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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<TD VALIGN="TOP" style="font-family:times;"><A HREF="#about"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>ABOUT THIS PROSPECTUS SUPPLEMENT</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#about"><FONT SIZE=2><BR>
S-2</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#where"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>WHERE YOU CAN FIND MORE INFORMATION</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#where"><FONT SIZE=2>S-3</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#disc"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DISCLOSURE REGARDING FORWARD-LOOKING STATEMENTS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#disc"><FONT SIZE=2>S-4</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#sum"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>SUMMARY</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#sum"><FONT SIZE=2>S-6</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#rsk"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>RISK FACTORS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#rsk"><FONT SIZE=2>S-13</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#uop"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>USE OF PROCEEDS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#uop"><FONT SIZE=2>S-18</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#exch"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>EXCHANGE RATES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#exch"><FONT SIZE=2>S-18</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#ratio"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>RATIO OF EARNINGS TO FIXED CHARGES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#ratio"><FONT SIZE=2>S-19</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#capi"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>CAPITALIZATION</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#capi"><FONT SIZE=2>S-20</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#desc"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DESCRIPTION OF THE SECURITIES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#desc"><FONT SIZE=2>S-21</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#mate"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>MATERIAL UNITED STATES FEDERAL INCOME TAX CONSEQUENCES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#mate"><FONT SIZE=2>S-29</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#cert"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>CERTAIN UNITED KINGDOM TAX CONSEQUENCES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#cert"><FONT SIZE=2>S-34</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#euro"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>EUROPEAN UNION SAVINGS TAX DIRECTIVE</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#euro"><FONT SIZE=2>S-35</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#prop"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>PROPOSED FINANCIAL TRANSACTION TAX</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#prop"><FONT SIZE=2>S-36</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#book"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>BOOK-ENTRY, DELIVERY AND FORM</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#book"><FONT SIZE=2>S-37</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#under"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>UNDERWRITING</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#under"><FONT SIZE=2>S-41</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#incorp"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#incorp"><FONT SIZE=2>S-46</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#legal"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>LEGAL MATTERS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#legal"><FONT SIZE=2>S-47</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#expert"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>EXPERTS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#expert"><FONT SIZE=2>S-47</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD ALIGN="CENTER" VALIGN="TOP" style="font-family:times;"><A HREF="#da79802_about_this_prospectus"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Prospectus</B></FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>ABOUT THIS PROSPECTUS</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>4</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#da79802_where_you_can_find_more_information"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>WHERE YOU CAN FIND MORE INFORMATION</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#da79802_where_you_can_find_more_information"><FONT SIZE=2>5</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#da79802_information_concerning_forward-looking_statements"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>INFORMATION CONCERNING FORWARD-LOOKING STATEMENTS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#da79802_information_concerning_forward-looking_statements"><FONT SIZE=2>6</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#da79802_risk_factors"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>RISK FACTORS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#da79802_risk_factors"><FONT SIZE=2>7</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#da79802_the_company"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>THE COMPANY</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#da79802_the_company"><FONT SIZE=2>8</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#da79802_use_of_proceeds"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>USE OF PROCEEDS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#da79802_use_of_proceeds"><FONT SIZE=2>9</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#da79802_ratios"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>RATIOS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#da79802_ratios"><FONT SIZE=2>10</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dc79802_description_of_debt_securities_and_guarantees"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DESCRIPTION OF DEBT SECURITIES AND GUARANTEES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dc79802_description_of_debt_securities_and_guarantees"><FONT SIZE=2>11</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#di79802_description_of_preference_shares"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DESCRIPTION OF PREFERENCE SHARES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#di79802_description_of_preference_shares"><FONT SIZE=2>27</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#di79802_description_of_class_a_ordinary_shares"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DESCRIPTION OF CLASS A ORDINARY SHARES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#di79802_description_of_class_a_ordinary_shares"><FONT SIZE=2>28</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#di79802_description_of_share_purchase___des02628"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DESCRIPTION OF SHARE PURCHASE CONTRACTS AND SHARE PURCHASE UNITS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#di79802_description_of_share_purchase___des02628"><FONT SIZE=2>28</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#di79802_plan_of_distribution"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>PLAN OF DISTRIBUTION</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#di79802_plan_of_distribution"><FONT SIZE=2>29</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#di79802_validity_of_securities"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>VALIDITY OF SECURITIES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#di79802_validity_of_securities"><FONT SIZE=2>31</FONT></A></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#di79802_experts"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>EXPERTS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#di79802_experts"><FONT SIZE=2>31</FONT></A></TD>
</TR>
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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>Neither we nor the underwriters have authorized anyone to provide any information other than that which is contained or incorporated by reference in this
prospectus supplement, the accompanying prospectus or any free writing prospectus prepared by or on behalf of us or to which we have referred
you. Neither we nor the underwriters take any responsibility for, or provide any assurance as to, the reliability of any other information that others may give you. No offer to sell these Securities
is being made in any jurisdiction where the offer or sale is not permitted. The information contained in this prospectus supplement, the accompanying prospectus, any free writing prospectus or any
document incorporated by reference is accurate as of the date of the document in which the information appears. Our business, financial condition, results of operations and prospects may have changed
after any of such dates.</B></FONT></P>

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</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>
<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Notice to Prospective Investors in the European Economic Area  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus supplement and the accompanying prospectus have been prepared on the basis that any offer of the Securities in any
Member State of the European Economic Area (the "EEA") that has implemented the Prospectus Directive (each, a "Relevant Member State") will be made pursuant to an exemption under the Prospectus
Directive, as implemented in that Relevant Member State, from the requirement to produce a prospectus for offers of notes. Accordingly, any person making or intending to make any offer in that
Relevant Member State of the Securities which are the subject of the offering contemplated by this prospectus supplement and the accompanying prospectus may only do so in circumstances in which no
obligation arises for us or any of the underwriters to produce a prospectus pursuant to Article&nbsp;3 of the Prospectus Directive in relation to such offer. Neither we nor the underwriters have
authorized, nor do we or they authorize, the making of any offer of notes in circumstances in which an obligation arises for us or the underwriters to publish a prospectus for such offer. "Prospectus
Directive" means Directive 2003/71/EC (and amendments thereto, including the 2010 PD Amending Directive, to the extent implemented in the Relevant Member State), and includes any relevant implementing
measure in the Relevant Member State and the expression "2010 PD Amending Directive" means Directive 2010/73/EU. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Notice to Prospective Investors in the United Kingdom  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus supplement and the accompanying prospectus are only being distributed to, and are only directed at, persons in the
United Kingdom that are qualified investors within the meaning of Article&nbsp;2(1)(e) of the Prospectus Directive and that are also (1)&nbsp;investment professionals falling within
Article&nbsp;19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (the "Order") or (2)&nbsp;high net worth entities, and other persons to whom it may lawfully be
communicated, falling within Article&nbsp;49(2)(a) to (d)&nbsp;of the Order (each such person being referred to as a "Relevant Person"). This prospectus supplement and the accompanying prospectus
and their contents are confidential and should not be distributed, published or reproduced (in whole or in part) or disclosed by recipients to any other persons in the United Kingdom. Any person in
the United Kingdom that is not a Relevant Person should not act or rely on this prospectus supplement and/or the accompanying prospectus or any of their contents. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
prospectus supplement and the accompanying prospectus have not been approved for the purposes of section&nbsp;21 of the UK Financial Services and Markets Act 2000 ("FSMA") by a
person authorized under FSMA. This prospectus supplement and the accompanying prospectus are being distributed and communicated to persons in the United Kingdom only in circumstances in which
section&nbsp;21(1) of FSMA does not apply to us. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Securities are not being offered or sold to any person in the United Kingdom except in circumstances which will not result in an offer of securities to the public in the United
Kingdom within the meaning of Part&nbsp;VI of FSMA. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="bi79801_stabilization"> </A>
<A NAME="toc_bi79801_1"> </A>
<BR></FONT><FONT SIZE=2><B>  STABILIZATION    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><B>IN CONNECTION WITH THE ISSUE OF THE NOTES, CREDIT SUISSE SECURITIES (EUROPE) LIMITED (IN THIS CAPACITY, THE
"STABILIZING MANAGER") (OR ANY PERSON ACTING ON BEHALF OF THE STABILIZING MANAGER) MAY OVER-ALLOT THE NOTES OR EFFECT TRANSACTIONS WITH A VIEW TO SUPPORTING THE MARKET PRICE OF THE NOTES AT A LEVEL
HIGHER THAN THAT WHICH MIGHT OTHERWISE PREVAIL. HOWEVER, THERE IS NO ASSURANCE THAT THE STABILIZING MANAGER (OR PERSONS ACTING ON BEHALF OF THE STABILIZING MANAGER) WILL UNDERTAKE ANY STABILIZATION
ACTION. ANY STABILIZATION ACTION MAY BEGIN ON OR AFTER THE DATE ON WHICH ADEQUATE PUBLIC DISCLOSURE OF THE FINAL TERMS OF THE OFFER OF THE NOTES IS MADE, AND,  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-1</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><A
HREF="#bg79801a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> IF BEGUN, MAY BE ENDED AT ANY TIME, BUT IT MUST END NO LATER THAN THE EARLIER OF&nbsp;30 DAYS AFTER THE ISSUE OF THE NOTES AND 60 DAYS AFTER THE DATE OF THE ALLOTMENT OF THE
NOTES.</B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>ANY STABILIZATION ACTION OR OVER-ALLOTMENT MUST BE CONDUCTED BY THE STABILIZING MANAGER (OR PERSONS ACTING ON BEHALF OF THE STABILIZING MANAGER) IN ACCORDANCE
WITH ALL APPLICABLE LAWS AND RULES.</B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="about"></A>ABOUT THIS PROSPECTUS SUPPLEMENT  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This document consists of two parts. The first part is this prospectus supplement, which describes the specific terms of this offering.
The second part is the accompanying prospectus, which describes more general information, some of which may not apply to this offering. You should read both this prospectus supplement and the
accompanying prospectus, together with the documents incorporated by reference and the additional information described below under the heading "Where You Can Find More Information." </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
the description of this offering varies between this prospectus supplement and the accompanying prospectus, you should rely on the information in this prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any
statement made in this prospectus supplement or in a document incorporated or deemed to be incorporated by reference in this prospectus supplement will be deemed to be modified or
superseded for purposes of this prospectus supplement to the extent that a statement contained in this prospectus supplement or in any other subsequently filed document that is also incorporated or
deemed to be incorporated by reference in this prospectus supplement or the accompanying prospectus modifies or supersedes that statement. Except as so modified or superseded, any statement so
modified or superseded will not be deemed to constitute a part of this prospectus supplement. See "Incorporation of Certain Documents by Reference" in this prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
this prospectus supplement, we use the terms "Aon&nbsp;plc" or the "Issuer" to refer to Aon&nbsp;plc (not including its subsidiaries), and the terms "Aon," "we," "us" and "our"
and similar terms to refer to Aon&nbsp;plc and its subsidiaries (including Aon Delaware), unless the context otherwise requires and except as otherwise described below. We use the terms "Aon
Delaware" or the "Guarantor" to refer to Aon Corporation, our wholly-owned subsidiary and the guarantor of the Notes. On April&nbsp;2, 2012, we completed the reorganization of the corporate
structure of the group of companies controlled by Aon
Delaware, Aon&nbsp;plc's predecessor as the ultimate holding company of the Aon group. In this prospectus supplement, we refer to this transaction as the "Redomestication." Any references in this
prospectus supplement to "Aon," "we," "us" and "our" or any similar references relating to dates or periods before the Redomestication refer to Aon Delaware and its subsidiaries or, if the context so
requires, Aon Delaware alone. References herein to "$" and "dollars" are to the currency of the United States. References to "&euro;" and "euro" are to the currency of the member states of
the European Monetary Union that have adopted or that adopt the single currency in accordance with the treaty establishing the European Community, as amended by the Treaty on European Union. The
financial information presented in this prospectus has been prepared in accordance with Generally Accepted Accounting Principles in the United States. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-2</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><A
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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="where"></A>WHERE YOU CAN FIND MORE INFORMATION  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We are subject to the information reporting requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). In
accordance with the Exchange Act, we file annual, quarterly and current reports, proxy statements and other information with the Securities and Exchange Commission (the "SEC"). Our SEC file number is
001-07933. You can read and copy this information at the following location of the SEC: </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>Public
Reference Room<BR>
100&nbsp;F Street, N.E.<BR>
Room&nbsp;1580<BR>
Washington, D.C. 20549 </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You
can also obtain copies of these materials from this public reference room, at prescribed rates. Please call the SEC at 1-800-SEC-0330 for further information on its public reference
room. The SEC also maintains a web site that contains reports, proxy statements and other information about issuers, including us, who file electronically with the SEC. The address of that site is
www.sec.gov. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
prospectus supplement and the accompanying prospectus, which form&nbsp;a part of the registration statement, do not contain all the information that is included in the
registration statement. You will
find additional information about us in the registration statement. Any statements made in this prospectus supplement, the accompanying prospectus or any documents incorporated by reference in this
prospectus supplement or the accompanying prospectus concerning the provisions of legal documents are not necessarily complete and you should read the documents that are filed as exhibits to the
registration statement or otherwise filed with the SEC for a more complete understanding of the document or matter. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-3</FONT></P>

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<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="disc"></A>DISCLOSURE REGARDING FORWARD-LOOKING STATEMENTS  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus supplement, the accompanying prospectus and any documents incorporated by reference into this prospectus supplement or
the accompanying prospectus contain certain statements related to future results, or states our intentions, beliefs and expectations or predictions for the future which are forward-looking statements
as that term is defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements relate to expectations or forecasts of future events. They use words such as "anticipate,"
"believe," "estimate," "expect," "forecast," "project," "intend," "plan," "potential," and other similar terms, and future or conditional tense verbs like "could," "may," "might," "should," "will" and
"would." You can also identify forward-looking statements by the fact that they do not relate strictly to historical or current facts. For example, we may use forward-looking statements when
addressing topics such as: market and industry conditions, including competitive and pricing trends; changes in our business strategies and methods of generating revenue; the development and
performance of our services and products; changes in the composition or level of our revenues; our cost structure and the outcome of cost-saving or restructuring initiatives; the outcome of
contingencies; dividend policy; the expected impact of acquisitions and dispositions; pension obligations; cash flow and liquidity; future actions by regulators; and the impact of changes in
accounting rules. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from either historical or anticipated results
depending on a variety of factors. Potential factors that could impact results include:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>general economic conditions in different countries in which we do business around the world, including conditions in
emerging markets and in the European Union relating to sovereign debt and the continued viability of the euro; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>changes in the competitive environment; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>changes in global equity and fixed income markets that could influence the return on invested assets; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>changes in the funding status of our various defined benefit pension plans and the impact of any increased pension funding
resulting from those changes; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>rating agency actions that could affect our ability to borrow funds; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>fluctuations in exchange and interest rates that could impact revenue and expense; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the impact of class actions, individual lawsuits and other contingent liabilities and loss contingencies arising from
errors and omissions and other claims against us, including client class actions, securities class actions, derivative actions and ERISA class actions; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the impact of any investigations brought by regulatory authorities in the United States (the "U.S."), the United Kingdom
(the "U.K.") and other countries; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the cost of resolution of other contingent liabilities and loss contingencies, including potential liabilities arising
from errors and omission claims against us; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>failure to retain and attract qualified personnel; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the impact of, and potential challenges in complying with, legislation and regulation in the jurisdictions in which we
operate, particularly given the global scope of our business and the possibility of conflicting regulatory requirements across jurisdictions in which we do business; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the effect of the Redomestication on our operations and financial results, including the reaction of our clients,
employees and other constituents, the effect of compliance with applicable U.K. regulatory regimes or the failure to realize some or all of the anticipated benefits; </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-4</FONT></P>

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<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the extent to which we retain existing clients and attract new businesses and our ability to incentivize and retain key
employees; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the extent to which we manage certain risks created in connection with the various services, including fiduciary and
advisory services, among others, that we currently provide, or will provide in the future, to clients; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>our ability to implement restructuring initiatives and other initiatives intended to yield cost savings, and the ability
to achieve those cost savings; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the potential of a system or network breach or disruption resulting in operational interruption or improper disclosure of
personal data; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>changes in commercial property and casualty markets and commercial premium rates that could impact revenues; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any inquiries relating to compliance with the U.S. Foreign Corrupt Practices Act and non-U.S. anti-corruption laws and
with U.S. and non-U.S. trade sanctions regimes; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>failure to protect intellectual property rights or allegations that we infringe on the intellectual property rights of
others; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the damage to our reputation among clients, markets or other third parties; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the actions taken by third parties that perform aspects of our business operations and client services; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>changes in costs or assumptions associated with our HR Solutions operating segment's outsourcing and consulting
arrangements that affect the profitability of these arrangements; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>our ability to grow and develop companies that we acquire or new lines of business. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any
or all of these forward-looking statements may turn out to be inaccurate, and there are no guarantees about our performance. The factors identified above are not exhaustive. We and
our subsidiaries operate in a dynamic business environment in which new risks emerge frequently. Accordingly, you should not place undue reliance on forward-looking statements, which speak only as of
the dates on which they are made. We are under no obligation (and expressly disclaim any obligation) to update or alter any forward-looking statement that we may make from time to time, whether as a
result of new information, future events or otherwise. Further information about factors that could materially affect Aon, including our results of operations and financial condition, is contained in
the "Risk Factors" section in Part&nbsp;I, Item&nbsp;1A of our Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2013 filed with the SEC. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-5</FONT></P>

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<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;<BR></FONT></P>


<P style="font-family:times;"><FONT SIZE=2><I> </i></font></p>
<DIV style="width:100%;border:#000000 solid 1pt;padding-top:12pt;padding-right:12pt;padding-bottom:1pt;padding-left:12pt;">
 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="sum"></A>SUMMARY  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><I>This summary highlights certain information about Aon&nbsp;plc, Aon Delaware and the offering of the
Securities. This summary does not contain all the information that may be important to you. You should carefully read this entire prospectus supplement, the accompanying prospectus and those documents
incorporated by reference into this prospectus supplement and the accompanying prospectus,
including the risk factors and the financial statements and related notes thereto, before making an investment decision.</I></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="ca79801_aon_plc"> </A>
<A NAME="toc_ca79801_1"> </A>
<BR></FONT><FONT SIZE=2><B>  Aon&nbsp;plc    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We are a preeminent professional service firm, focused on the topics of risk and people. We are the leading global provider of risk
management services, insurance and reinsurance brokerage, and human resource consulting and outsourcing, delivering distinctive client value via innovative and effective risk management and workforce
productivity solutions. We serve clients through two operating segments, Risk Solutions and HR Solutions. Risk Solutions acts as an advisor and insurance and reinsurance broker, helping clients manage
their risks, via consultation, as well as negotiation and placement of insurance risk with insurance carriers through our global distribution network. HR Solutions partners with organizations to solve
their most complex benefits, talent and related financial challenges, and improve business performance by designing, implementing, communicating and administering a wide range of human capital,
retirement, investment management, health care, compensation and talent management strategies. As of March&nbsp;31, 2014, we had approximately 66,000 employees and conducted our operations through
various subsidiaries in more than 120 countries and sovereignties. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
principal executive offices are located at 8 Devonshire Square, London, England EC2M&nbsp;4PL. Our telephone number is +44&nbsp;20&nbsp;7623&nbsp;5500. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="ca79801_aon_delaware"> </A>
<A NAME="toc_ca79801_2"> </A>
<BR></FONT><FONT SIZE=2><B>  Aon Delaware    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon Delaware is a wholly-owned Delaware subsidiary of Aon&nbsp;plc. Prior to the Redomestication, Aon Delaware was the ultimate
holding company for the Aon group. See "About this Prospectus Supplement" and "Where You Can Find More Information." </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon
Delaware's principal executive offices are located at 200 East Randolph Street, Chicago, Illinois 60601, and its telephone number is (312)&nbsp;381-1000. </FONT></P>
 <p style="font-family:times;"><font style="font-size:1pt;line-height:1pt;">&nbsp;</font></p>
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 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-6</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><I> </i></font></p>
<DIV style="width:100%;border:#000000 solid 1pt;padding-top:12pt;padding-right:12pt;padding-bottom:1pt;padding-left:12pt;">
 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="ca79801_offering_summary"> </A>
<A NAME="toc_ca79801_3"> </A>
<BR></FONT><FONT SIZE=2><B>  Offering Summary    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following is a summary of some of the terms of this offering. For a more complete description of the terms of the Securities,
please refer to "Description of the Securities" in this prospectus supplement and "Description of Debt Securities and Guarantees" in the accompanying prospectus. </FONT></P>
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<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Aon&nbsp;plc </B></FONT></TH>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Notes Offered</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&euro;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;aggregate principal amount of&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% Senior Notes due 2026.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Maturity Date</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2026.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Interest Rate</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The Notes will bear interest from and including May&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2014 at the rate
of&nbsp;&nbsp;&nbsp;&nbsp;% per annum, payable annually in arrears.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Interest Payment Dates</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Interest on the Notes will be payable in arrears
on&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;of each year, commencing on&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2015.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Guarantor</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Aon Delaware.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Guarantee</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The Notes will be fully and unconditionally guaranteed by Aon Delaware.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ranking of the Securities</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The Notes are unsecured obligations of Aon&nbsp;plc and will rank equally in right of payment with all of
Aon&nbsp;plc's other existing and future senior unsecured indebtedness. The Notes will be effectively subordinated to all of the existing and future secured indebtedness of Aon&nbsp;plc to the extent of the value of the assets securing such
indebtedness. As of March&nbsp;31, 2014, Aon&nbsp;plc had no secured indebtedness for borrowed money. The Notes will be structurally subordinated to all of the existing and future secured and unsecured indebtedness and other liabilities of
Aon&nbsp;plc's subsidiaries (though you may have a direct claim as to Aon Delaware by virtue of its obligations with respect to the Notes). As of March&nbsp;31, 2014, Aon&nbsp;plc's subsidiaries (other than Aon Delaware) had approximately
$4.0&nbsp;billion of outstanding indebtedness and other liabilities, including trade payables, pension and other post-employment liabilities, other current and non-current liabilities, but excluding intercompany liabilities and fiduciary liabilities,
constituting approximately 63.6% of Aon&nbsp;plc's total consolidated liabilities (other than those of Aon Delaware).</FONT></TD>
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<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Aon&nbsp;plc </B></FONT></TH>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The Guarantee is an unsecured obligation of Aon Delaware and will rank equally in right of payment with all of Aon Delaware's
other existing and future senior unsecured indebtedness. The Guarantee will be effectively subordinated to all of the existing and future secured indebtedness of Aon Delaware to the extent of the value of the assets securing such indebtedness. As of
March&nbsp;31, 2014, Aon Delaware had no secured indebtedness for borrowed money and had approximately $3.8&nbsp;billion of consolidated outstanding indebtedness and other liabilities, including trade payables, pension and other post-employment
liabilities, other current and non-current liabilities, but excluding intercompany liabilities and fiduciary liabilities. The Guarantee will be structurally subordinated to all of the existing and future secured and unsecured indebtedness and other
liabilities of Aon Delaware's subsidiaries. As of March&nbsp;31, 2014, Aon Delaware's subsidiaries had approximately $3.2&nbsp;billion of outstanding indebtedness and other liabilities, including trade payables, pension and other post-employment
liabilities, other current liabilities and non-current liabilities, but excluding intercompany liabilities and fiduciary liabilities, constituting approximately 45.7% of Aon Delaware's total consolidated liabilities.</FONT></TD>
</TR>
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<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Currency of Payments</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>All payments of interest and principal, including payments made upon any redemption of the Notes or any payment
made under the Guarantee, will be made in euro. If the euro is unavailable to us due to the imposition of exchange controls or other circumstances beyond our control or the euro is no longer used by the then member states of the European Monetary
Union that have adopted the euro as their currency or for the settlement of transactions by public institutions of or within the international banking community, then all payments in respect of the Notes will be made in U.S. dollars until the euro is
again available to us or so used. The amount payable on any date in euro will be converted into U.S. dollars at the rate mandated by the U.S. Federal Reserve Board as of the close of business on the second business day prior to the relevant payment
date or, in the event the U.S. Federal Reserve Board has not mandated a rate of conversion, on the basis of the then most recent U.S. dollar/euro exchange rate published in </FONT><FONT SIZE=2><I>The Wall Street Journal</I></FONT><FONT SIZE=2> on or
most recently prior to the second business day prior to the relevant payment date. Any payments in respect of the Notes so made in U.S. dollars will not constitute an event of default under the terms of the Notes or the indenture governing the
Notes.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Optional Redemption</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Aon&nbsp;plc may at its option redeem all of the Notes at any time and some of the Notes from time to time, at a
redemption price equal to the greater of:</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-bottom:-12pt;margin-left:0pt;"><FONT SIZE=2> </font> &#149; </font></p> <p align=left style="font-family:times;margin-top:0pt;margin-left:10pt;"> <font size=2> </FONT><FONT SIZE=2>100% of the
principal amount of the Notes being redeemed; and</FONT></TD>
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</font></p><p style="font-family:times;"><font style="font-size:1pt;line-height:1pt;">&nbsp;</font></p>
</DIV>
 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-8</FONT></P>

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<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Aon&nbsp;plc </B></FONT></TH>
</TR>
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<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:0pt;margin-bottom:-12pt;margin-left:0pt;"><FONT SIZE=2> </font> &#149; </font></p> <p align=left style="font-family:times;margin-top:0pt;margin-left:10pt;"> <font size=2> </FONT><FONT SIZE=2>the sum of
the present values of the remaining scheduled payments of principal and interest thereon (not including any portion of such payments of interest accrued as of the redemption date), discounted to the date of redemption on an annual basis
(ACTUAL/ACTUAL (ICMA)) at the applicable Comparable Government Bond Rate (as defined under "Description of the Securities&#151;Optional Redemption"), plus&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;basis points
(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;%),</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>plus, in either case, accrued and unpaid interest on the principal amount of the Notes being redeemed to but
excluding the redemption date.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>On or after&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2026 Aon&nbsp;plc may redeem any or all of the Notes
at a redemption price equal to 100% of the principal amount of the Notes being redeemed, plus accrued and unpaid interest on the principal amount of the Notes being redeemed to but excluding the redemption date.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>See "Description of the Securities&#151;Optional Redemption."</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Additional Amounts</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Aon&nbsp;plc and Aon Delaware have agreed to pay additional amounts to the holders of Notes from time to time in
the event any interest payment on the Notes or any payment made under the Guarantee is subject to withholding or deduction in respect of Taxes (as defined in "Description of the Securities&#151;Payment of Additional Amounts"), subject to certain
exceptions.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Optional Tax Redemption</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>In the event of certain changes in respect of Taxes applicable to the Notes or the Guarantee, Aon&nbsp;plc may
redeem the Notes in whole, but not in part, at any time, at a redemption price equal to 100% of their principal amount plus accrued and unpaid interest, if any, to the redemption date. See "Description of the Securities&#151;Optional Tax
Redemption."</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Covenants</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The indenture includes certain requirements that must be met if Aon&nbsp;plc or Aon Delaware consolidates with or
merges into, or transfers or leases its assets substantially as an entirety to, another entity or person.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Use of Proceeds</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>We intend to use the net proceeds of this offering for general corporate purposes, including the repayment of our
outstanding 6.25% EUR 500&nbsp;million debt securities due July 2014 (the "EUR 500 Notes") at maturity. See "Use of Proceeds."</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Trading / Listing</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The Notes are a new issue of securities with no established trading market. Aon&nbsp;plc intends to apply to list
the Notes on the New York Stock Exchange ("NYSE") or another "recognised stock exchange" for purposes of Section&nbsp;1005 of the U.K. Income Tax Act 2007.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Form/Clearing Systems</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The Notes will be issued only in registered, book-entry form and deposited in global form with a common
depositary for Euroclear and Clearstream in minimum denominations of &euro;100,000 in principal amount and multiples of &euro;1,000 in excess thereof.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Risk Factors</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>See "Risk Factors" beginning on page&nbsp;S-13 of this prospectus supplement for important information regarding
us and an investment in the Securities.</FONT></TD>
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</font></p><p style="font-family:times;"><font style="font-size:1pt;line-height:1pt;">&nbsp;</font></p>
</DIV>
 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-9</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><A
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<P style="font-family:times;"><FONT SIZE=2><I> </i></font></p>
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<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Aon&nbsp;plc </B></FONT></TH>
</TR>
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<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Further Issuances</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Aon&nbsp;plc may, from time to time, without the written consent of and without giving notice to holders of the Securities,
create and issue additional notes having the same terms and conditions as the Notes in all respects (other than the issue date, issue price, and to the extent applicable, first date of interest accrual and first interest payment date of such notes).
Those additional notes will be consolidated with and form&nbsp;a single series with the previously outstanding Notes; </FONT><FONT SIZE=2><I>provided</I></FONT><FONT SIZE=2> that if the additional notes are not fungible with the Notes for U.S.
federal income tax purposes, the additional notes will have separate ISIN and Common Code numbers.</FONT></TD>
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<TR VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Trustee</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The Bank of New York Mellon Trust Company, N.A.</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Principal Paying Agent</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The Bank of New York Mellon, London Branch.</FONT></TD>
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<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Governing Law</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><p align=left style="font-family:times;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The Securities and the indenture will be governed by the laws of the State of New York.</FONT></TD>
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 <p style="font-family:times;"><font style="font-size:1pt;line-height:1pt;">&nbsp;</font></p>
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 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-10</FONT></P>

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<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;<BR></FONT></P>


<P style="font-family:times;"><FONT SIZE=2><I> </i></font></p>
<DIV style="width:100%;border:#000000 solid 1pt;padding-top:12pt;padding-right:12pt;padding-bottom:1pt;padding-left:12pt;">
 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
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<A NAME="toc_cc79801_1"> </A>
<BR></FONT><FONT SIZE=2><B>  Selected Historical Financial Data    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following table sets forth the selected historical consolidated financial and operating data for Aon. The selected consolidated
financial and operating data as of and for the years ended December&nbsp;31, 2013, 2012 and 2011 have been derived from Aon's audited consolidated financial statements and related notes contained in
its Annual Report on Form&nbsp;10-K for the year ended
December&nbsp;31, 2013, which is incorporated by reference into this prospectus supplement. The selected consolidated financial and operating data as of and for the three months ended
March&nbsp;31, 2014 and 2013 have been derived from Aon's unaudited condensed consolidated financial statements and related notes contained in Aon's Quarterly Report on Form&nbsp;10-Q for the
quarterly period ended March&nbsp;31, 2014, which is incorporated by reference into this prospectus supplement, except that the balance sheet data as of March&nbsp;31, 2013 has been derived from
Aon's unaudited condensed consolidated financial statements contained in its Quarterly Report on Form&nbsp;10-Q for the quarterly period ended March&nbsp;31, 2013, which has not been incorporated
by reference in this prospectus supplement. The results for the three months ended March&nbsp;31, 2014 and 2013 are not necessarily indicative of the results that may be expected for the entire
fiscal year. Aon's unaudited interim financial statements reflect all adjustments that management of Aon considers necessary for fair presentation of the financial position and results of operations
for such periods in accordance with United States generally accepted accounting principles, which we refer to as GAAP. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Historical
results are not necessarily indicative of the results that may be expected for any future period. This selected consolidated financial and operating data should be read in
conjunction with Aon's audited consolidated financial statements, the notes related thereto and "Management's Discussion and Analysis of Financial Condition and Results of Operations" contained in
Aon's Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2013 and Aon's unaudited consolidated financial statements, the notes related thereto and "Management's Discussion and
Analysis of Financial Condition and Results of Operations" contained in Aon's Quarterly Report on Form&nbsp;10-Q for the quarterly period ended March&nbsp;31, 2014. See "Incorporation of Certain
Documents by Reference" in this prospectus supplement. </FONT></P>
 <p style="font-family:times;"><font style="font-size:1pt;line-height:1pt;">&nbsp;</font></p>
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 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-11</FONT></P>

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<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="6pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="67pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="6pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="67pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="6pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="64pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="6pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="64pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="6pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="64pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<!-- TABLE COLUMN WIDTHS END --></TR>

<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=14 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Historical </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Three Months<BR>
Ended<BR>
March&nbsp;31,<BR>
2014 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Three Months<BR>
Ended<BR>
March&nbsp;31,<BR>
2013 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Year Ended<BR>
December&nbsp;31,<BR>
2013 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Year Ended<BR>
December&nbsp;31,<BR>
2012 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Year Ended<BR>
December&nbsp;31,<BR>
2011 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=14 ALIGN="CENTER" style="font-family:times;"><FONT SIZE=1><B>(millions, except shareholders, employees and per share data)</B></FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Income Statement Data</B></FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Commissions, fees and other</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>2,941</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>2,908</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>11,787</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>11,476</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>11,235</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Fiduciary investment income</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>6</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>7</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>28</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>38</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>52</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:11pt;margin-left:27pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Total revenue</B></FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
2,947</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
2,915</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
11,815</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
11,514</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
11,287</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:11pt;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Operating income</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
469</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
410</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
1,671</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
1,596</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
1,596</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:27pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Net Income(1)</B></FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>336</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>272</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>1,148</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>1,020</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>1,010</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Less: Net income attributable to noncontrolling interests</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>11</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>11</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>35</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>27</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>31</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:11pt;margin-left:27pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Net income attributable to Aon shareholders</B></FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
325</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
261</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
1,113</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
993</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
979</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:11pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Basic Net Income Per Share Attributable to Aon Shareholders</B></FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
1.07</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
0.82</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
3.57</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
3.02</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
2.92</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:11pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Diluted Net Income Per Share Attributable to Aon Shareholders</B></FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
1.06</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
0.82</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
3.53</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
2.99</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
2.87</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:11pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Balance Sheet Data</B></FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Fiduciary assets(2)</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>12,038</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>12,224</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>11,871</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>12,214</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>10,838</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Intangible assets including goodwill</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>11,530</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>11,630</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>11,575</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>11,918</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>12,046</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total assets</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>30,077</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>30,029</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>30,251</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>30,486</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>29,552</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total debt</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>4,746</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>4,572</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>4,389</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>4,165</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>4,492</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total equity</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>8,006</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>7,633</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>8,195</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>7,805</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>8,120</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:11pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Class&nbsp;A Ordinary Shares and Other Data</B></FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Dividends paid per share</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>0.16</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>0.16</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>0.68</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>0.62</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>0.60</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Price range:</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:27pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>High</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>87.45</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>61.87</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>84.33</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>57.92</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>54.58</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:27pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Low</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>76.49</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>54.65</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>54.65</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>45.04</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>39.68</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>At period-end</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:27pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Market price</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>84.28</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>61.50</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>83.89</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>55.61</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>46.80</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:27pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Common shareholders</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>266</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>264</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>281</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>240</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>8,107</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:27pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Shares outstanding</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>296.5</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>309.1</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>300.7</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>310.9</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>324.4</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:27pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Number of employees</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>66,029</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>65,243</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>65,547</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>64,725</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>62,443</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
</TABLE></DIV>
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<DIV style="padding:0pt;position:relative;text-align:left;margin-left:10%;">
 <DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>For
the years ended December&nbsp;31, 2012, and 2011 amounts related to discontinued operations have been included in Other income to conform to amounts
included in the Consolidated Financial Statements included in our Form&nbsp;10-K for the year ended December&nbsp;31, 2013. These amounts in the years ended December&nbsp;31, 2012 and 2011,
which were historically included in Income (loss) from discontinued operations, have been reclassified to conform with current presentation. The amounts reclassified were $1&nbsp;million loss and
$4&nbsp;million income for the years ended December&nbsp;31, 2012 and 2011, respectively, from Income (loss) from discontinued operations to Other income.
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(2)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Represents
insurance premiums receivables from clients as well as cash and investments held in a fiduciary capacity. </FONT></DD></DL>
 </DIV>

 <p style="font-family:times;"><font style="font-size:1pt;line-height:1pt;">&nbsp;</font></p>
</DIV>
 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-12</FONT></P>

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</FONT> <FONT SIZE=2>
<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="rsk"></A>RISK FACTORS  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><I>You should carefully consider the risks described below, the risks set forth in the accompanying prospectus and
the other information set forth in this prospectus supplement, the accompanying prospectus and the documents incorporated by reference herein and therein before making an investment decision. These
risks include those set forth in the "Risk Factors" section of our Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2013 filed with the SEC, and include risks that could have a
material adverse effect on our and Aon Delaware's financial condition, results of operations or cash flows and which could, in turn, impact our and Aon Delaware's ability to perform our respective
obligations under the Securities.</I></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><I>Additional risks and uncertainties not presently known to us, or that we currently deem immaterial, may also impair our or Aon Delaware's business operations. The
events discussed in the risk factors below, or the risk factors in the accompanying prospectus or the documents incorporated by reference herein or therein, may occur. If they do, our or Aon
Delaware's business, results of operations or financial condition could be materially adversely affected. In such an instance, the trading prices of our or Aon Delaware's securities, including the
Notes, could decline and you might lose all or part of your investment.</I></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Risks Related to the Notes  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> The Notes will be effectively subordinated to all of Aon&nbsp;plc's existing and future secured debt (to the extent of the value of the assets securing such indebtedness)
and to the existing and future debt of Aon&nbsp;plc's subsidiaries (though you may have a direct claim as to Aon Delaware by virtue of its obligations with respect to the Guarantee), and the
Guarantee will be effectively subordinated to all of Aon Delaware's existing and future secured debt (to the extent of the value of the assets securing such indebtedness) and to the existing and
future debt of Aon Delaware's subsidiaries.  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Notes are not secured by any of Aon&nbsp;plc's assets or the assets of its subsidiaries (including Aon Delaware), and the
Guarantee is not secured by any of the assets of Aon Delaware or the assets of Aon Delaware's subsidiaries. As a result, the indebtedness represented by the Notes will effectively be subordinated to
any secured indebtedness Aon&nbsp;plc or its subsidiaries may incur, and the indebtedness represented by the Guarantee will effectively be subordinated to any secured indebtedness Aon Delaware or
its subsidiaries may incur, in each case to the extent of the value of the assets securing such indebtedness. As of March&nbsp;31, 2014, neither Aon&nbsp;plc nor Aon Delaware had any secured
indebtedness for borrowed money. As of March&nbsp;31, 2014, Aon&nbsp;plc's subsidiaries (other than Aon Delaware) had approximately $4.0&nbsp;billion of outstanding indebtedness and other
liabilities, including trade payables, pensions and other post-employment liabilities, other current liabilities and non-current liabilities, but excluding intercompany liabilities and fiduciary
liabilities, and Aon Delaware's subsidiaries had approximately $3.2&nbsp;billion of outstanding indebtedness and other liabilities, including trade payables, pensions and other post-employment
liabilities, other current liabilities and non-current liabilities, but excluding intercompany liabilities and fiduciary liabilities. In the event of any distribution or payment of Aon&nbsp;plc's
assets or those of Aon Delaware in any foreclosure, dissolution, winding up, liquidation or reorganization, or other bankruptcy proceeding, any secured creditors of Aon&nbsp;plc or of Aon Delaware,
respectively, would have a superior claim to holders of the Notes to the extent of the value of their collateral. In the event of the dissolution, a winding up, liquidation or reorganization, or other
bankruptcy proceeding of a subsidiary of Aon&nbsp;plc, creditors of that subsidiary would generally have the right to be paid in full before any distribution is made to Aon&nbsp;plc or you in
respect of the Notes (except with respect to amounts payable by Aon Delaware under the Guarantee). In the event of a dissolution, winding up, liquidation or reorganization, or other bankruptcy
proceeding of a subsidiary of Aon Delaware, creditors of that subsidiary would generally have the right to be paid in full before any distribution is made to Aon Delaware or to you in respect of the
Guarantee. If any of the foregoing occur, we cannot assure you that there will be sufficient assets to pay amounts due on the Securities. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-13</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><B><I> We need to maintain adequate liquidity in order to have sufficient cash to meet operating cash flow requirements, repay maturing debt and satisfy other obligations. If we
fail to comply with the covenants contained in our various borrowing agreements, our or Aon Delaware's liquidity, results of operations and financial condition may be adversely affected.  </I></B></FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our liquidity is a function of our ability to successfully generate cash flows from operations and improvement therein, access to
capital markets and borrowings under our credit agreements. We believe our liquidity (including operating and other cash flows that we expect to generate) will be sufficient to meet operating
requirements as they occur; however, our ability to maintain sufficient liquidity going forward depends on our ability to generate cash from operations and access to the capital markets and
borrowings, all of which are subject to general economic, financial, competitive, legislative, regulatory and other market factors that are beyond our control. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
have a five-year $400&nbsp;million unsecured revolving credit facility in the U.S. ("U.S. Facility"), which expires in 2017. The U.S. facility is for general corporate purposes,
including commercial paper support. Additionally, we have a five-year &euro;650&nbsp;million ($896&nbsp;million at March&nbsp;31, 2014 exchange rates) multi-currency foreign credit
facility ("Euro Facility") available, which expires in October 2015. At March&nbsp;31, 2014, we had no borrowings outstanding under either of these facilities. At March&nbsp;31, 2014, we were
compliant with the financial covenants contained in our U.S. and Euro Facilities. However, failure to comply with material provisions of our covenants in the credit facilities could result in a
default under the credit agreements, rendering them unavailable to us and causing a material adverse effect on our or Aon Delaware's liquidity, results of operations and financial condition. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Certain of our financing agreements, including our credit facilities, contain various covenants that limit the discretion of our management in operating our business and
could prevent us from engaging in certain potentially beneficial activities, and the violation of these covenants could result in an event of default. The Securities will not have the benefit of all
of these covenants.  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The restrictive covenants in our financing agreements may impact how we operate our business and prevent us from engaging in certain
potentially beneficial activities. For both our U.S. Facility and our Euro Facility, the two most significant covenants require us to maintain a ratio of consolidated EBITDA (earnings before interest,
taxes, depreciation and amortization), adjusted for Hewitt-related transaction costs and up to $50&nbsp;million in non-recurring cash charges ("Adjusted EBITDA"), to consolidated interest expense
and a ratio of consolidated debt to Adjusted EBITDA. For both facilities, the ratio of Adjusted EBITDA to consolidated interest expense must be at least 4 to 1. For the Euro Facility, the ratio of
consolidated debt to Adjusted EBITDA must not exceed 3 to 1. For the U.S. Facility, the ratio of consolidated debt to Adjusted EBITDA must not exceed the lower of (a)&nbsp;3.25 to 1.00 or
(b)&nbsp;the greater of (i)&nbsp;3.00 to 1.00 or (ii)&nbsp;consolidated debt to Adjusted EBITDA then set forth in the Euro Facility. The indenture governing the Securities does not include
similar covenants. Failure to comply with the covenants contained in our credit facilities or our other existing indebtedness could result in an event of default under the credit facilities or our
other existing indebtedness that, if not cured or waived, could have a material adverse effect on our or Aon
Delaware's business, financial condition and results of operations. In the event of certain defaults under our credit facilities or our other indebtedness, the lenders thereunder would not be required
to lend any additional amounts to us and could elect to declare all borrowings outstanding, together with accrued and unpaid interest and fees, to be due and payable. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
the indebtedness under our credit facilities or our other indebtedness, including the Securities, were to be accelerated, there can be no assurance that our assets would be sufficient
to repay such indebtedness in full. See "Description of the Securities." </FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><B><I> There are no covenants in the indenture limiting our or Aon Delaware's ability to incur future indebtedness, pay dividends or transfer assets among our subsidiaries, and
limited restrictions on our or Aon Delaware's ability to engage in other activities, which could adversely affect our or Aon Delaware's ability to pay our respective obligations under the Securities.  </I></B></FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The indenture does not contain any financial covenants. The indenture will permit us and our subsidiaries (including Aon Delaware) to
incur additional debt, including secured debt. Because the Securities will be unsecured, in the event of any dissolution, winding up, liquidation or reorganization or other bankruptcy proceeding
regarding us or Aon Delaware, whether voluntary or involuntary, the holders of our or Aon Delaware's secured debt will be entitled to receive payment to the extent of the value of the assets securing
that debt before we or Aon Delaware can make any payment with respect to the Securities. If any of the foregoing events occurs, we cannot assure you that we or Aon Delaware will have sufficient assets
to pay amounts due on the Securities. As a result, you may receive a payment on the Securities that is less than that which you are entitled to receive or recover nothing if any liquidation,
dissolution, reorganization, bankruptcy or other similar proceeding occurs. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
indenture does not limit our, Aon Delaware's or our respective subsidiaries' ability to issue or repurchase securities, pay dividends, incur intercompany liabilities or engage in
transactions with affiliates. Our and Aon Delaware's ability to use funds for numerous purposes may limit the funds available to pay our or Aon Delaware's obligations under the Securities. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2><B><I> The Securities lack a developed public market.  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;There can be no assurance regarding the future development of a market for the Securities or the ability of holders of the Securities
to sell their Securities or the price at which such holders may be able to sell their Securities. If such a market were to develop, the Securities could trade at prices that may be higher or lower
than the initial offering price depending on many factors, including, among other things, prevailing interest rates, our or Aon Delaware's operating results or financial condition and the market for
similar securities. Underwriters, broker-dealers and agents that participate in the distribution of the Securities may make a market in the Securities as permitted by applicable laws and regulations
but will have no obligation to do so, and any such market-making activities with respect to the Securities may be discontinued at any time without notice. Therefore, there can be no assurance as to
the liquidity of any trading market for the Securities or that an active public market for the Securities will develop. See "Underwriting." Aon&nbsp;plc intends to apply to list the Notes on the New
York Stock Exchange or another "recognised stock exchange" for purposes of Section&nbsp;1005 of the U.K. Income Tax Act 2007; however, there can be no assurance that the Notes will be so listed by
the time the Notes are delivered to purchasers. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Our and Aon Delaware's credit ratings may not reflect all risks of an investment in the Securities, and are subject to change.  </I></B></FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The credit ratings of the Securities may not reflect the potential impact of all risks related to structure and other factors on any
trading market for, or trading value of, the Securities. In addition, real or anticipated changes in our or Aon Delaware's credit ratings, which could result from any number of factors (including the
modification by a credit rating agency of the criteria or methodology it applies to particular issuers, including us or Aon Delaware), will generally affect any trading market for, or trading value
of, the Securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Holders of the Notes will receive payments solely in euro.  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Except as described under "Description of the Securities&#151;Issuance and Payment in Euro" in this prospectus supplement, all
payments of interest on and the principal of the Notes, any redemption price for, and any additional amounts with respect to the Notes, including any payment made under the </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-15</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>Guarantee,
will be made in euro. We, the underwriters, the trustee and the paying agents with respect to the Notes will not be obligated to convert, or to assist any registered owner or beneficial
owner of Notes in converting payments of interest, principal, any redemption price, any additional amount or any payment made under the Guarantee in euro made with respect to the Notes into any other
currency. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> The Notes permit us to make payments in U.S. dollars if we are unable to obtain euro.  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If the euro is unavailable to us due to the imposition of exchange controls or other circumstances beyond our control or if the euro is
no longer being used by the then member states of the European Monetary Union that have adopted the euro as their currency or for the settlement of transactions by public institutions of or within the
international banking community, then all payments in respect of the Notes will be made in U.S. dollars until the euro is again available to us or so used. The amount payable on any date in euro will
be converted into the U.S. dollars at the rate mandated by the U.S. Federal Reserve Board as of the close of business on the second business day prior to the relevant payment date or, in the event the
U.S. Federal Reserve Board has not mandated a rate of conversion, on the basis of the then most recent U.S. dollar/euro exchange rate published in </FONT><FONT SIZE=2><I>The Wall Street
Journal</I></FONT><FONT SIZE=2> on or most recently prior to the second business day prior to the relevant payment date. Any payment in respect of the Notes so made in U.S. dollars will not constitute
an event of default under the Notes or the indenture governing the Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Holders of the Notes may be subject to the effects of foreign currency exchange rate fluctuations, as well as possible exchange controls, relating to the euro.  </I></B></FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The initial investors in the Notes will be required to pay for the Notes in euro. Neither we, the Trustee, the Principal Paying Agent
nor the underwriters will be obligated to assist the initial investors in obtaining euro or in converting other currencies into euro to facilitate the payment of the purchase price for the Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An
investment in any security denominated in, and all payments with respect to which are to be made in, a currency other than the currency of the country in which an investor in Notes
resides or the currency in which an investor conducts its business or activities (the "investor's home currency"), entails significant risks not associated with a similar investment in a security
denominated in the investor's home currency. In the case of the Notes offered hereby, these risks may include the possibility of:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>significant changes in rates of exchange between the euro and the investor's home currency; and </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the imposition or modification of foreign exchange controls with respect to the euro or the investor's home currency. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
have no control over a number of factors affecting the Notes offered hereby and foreign exchange rates, including economic, financial and political events that are important in
determining the existence, magnitude and longevity of these risks and their effects. Changes in foreign currency exchange rates between two currencies result from the interaction over time of many
factors directly or indirectly affecting economic and political conditions in the countries issuing such currencies, and economic and political developments globally and in other relevant countries.
Foreign currency exchange rates may be affected by, among other factors, existing and expected rates of inflation, existing and expected interest rate levels, the balance of payments between
countries, the aggregate amount of a national government's outstanding debt, and the extent of governmental surpluses or deficits in various countries. All of these factors are, in turn, sensitive to
the monetary, fiscal and trade policies pursued by the governments of various countries important to international trade and finance. Moreover, current global economic conditions and the actions taken
or to be taken by various national governments in response to such conditions could significantly affect the exchange rates between the euro and the investor's home currency. Finally, if one or more
member states of the European </FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>Monetary
Union were to withdraw from that union and cease to use the euro as their currency, the value of the euro could be materially adversely affected. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
exchange rates of an investor's home currency for euro and the fluctuations in those exchange rates that have occurred in the past are not necessarily indicative of the exchange
rates or the fluctuations therein that may occur in the future. Depreciation of the euro against the investor's home currency would result in a decrease in the investor's home currency equivalent
yield on a note, in the investor's home currency equivalent of the principal payable at the maturity of that note and generally in the investor's home currency equivalent market value of that note.
Appreciation of the euro in relation to the investor's home currency would have the opposite effects. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
European Union or one or more of its member states may, in the future, impose exchange controls and modify any exchange controls imposed, which controls could affect exchange rates
as well
as the availability of euro at the time of payment of principal of, interest on, or any redemption payment or additional amounts with respect to, the Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
description of foreign exchange risks does not describe all the risks of an investment in securities, including, in particular, the Notes, that are denominated or payable in a
currency other than an investor's home currency. You should consult your own financial and legal advisors as to the risks involved in an investment in the Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Trading in the clearing system is subject to minimum denomination requirements.  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The terms of the Notes provide that the Notes will be issued with a minimum denomination of &euro;100,000 and multiples of
&euro;1,000 in excess thereof. It is possible that the clearing systems may process trades that could result in amounts being held in denominations smaller than the minimum denominations.
If definitive notes are required to be issued in relation to such Notes in accordance with the provisions of the relevant global Notes, a holder who does not have the minimum denomination or a
multiple of &euro;1,000 in excess thereof in its account with the relevant clearing system at the relevant time may not receive all of its entitlement in the form of definitive Notes unless
and until such time as its holding satisfies the minimum denomination requirement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> In a lawsuit for payment on the Notes, an investor may bear currency exchange risk or have difficulty bringing claims against us in courts outside of the U.S.  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The indenture is, and the Notes will be, governed by the laws of the State of New York. Under New York law, a New York state court
rendering a judgment on the Notes would be required to render the judgment in euro. However, the judgment would be converted into U.S. dollars at the exchange rate prevailing on the date of entry of
the judgment. Consequently, in a lawsuit for payment on the Notes, investors would bear currency exchange risk until a New York state court judgment is entered, which could take a significant amount
of time. A Federal court sitting in New York with diversity jurisdiction over a dispute arising in connection with the Notes would apply the foregoing New York law. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
U.S. courts outside of New York, investors may not be able to obtain a judgment in a currency other than U.S. dollars. For example, a judgment for money in an action based on the
Notes in many other U.S. federal or state courts ordinarily would be enforced in the United States only in U.S. dollars. The date used to determine the rate of conversion of euro into U.S. dollars
would depend upon various factors, including which court renders the judgment and when the judgment is rendered. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
addition, it may be difficult for investors to bring claims against us in the courts of other countries. For example, there is doubt as to the enforceability in England and Wales, in
original actions or in actions for enforcement of judgments of U.S. courts, of civil liabilities solely based on the U.S. federal securities laws. Because Aon&nbsp;plc is a public limited company
incorporated under the laws of England and Wales, it may be more difficult (or impossible) to bring some types of claims against us in courts in England than it would be to bring similar claims
against a U.S. company in a U.S. court. </FONT></P>

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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="uop"></A>USE OF PROCEEDS  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The net proceeds to us of this offering after deducting the underwriting discounts and estimated offering expenses payable by us, are
expected to be approximately &euro;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;($&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;based on an &euro;/$ exchange rate of &euro;1/$1.3777 as of March&nbsp;31, 2014). We intend to use
the net proceeds from this offering for general corporate purposes, including the repayment of our outstanding EUR&nbsp;500 Notes at maturity. At March&nbsp;31, 2014, the amount of EUR&nbsp;500
Notes outstanding, including the fair value hedge, was $691&nbsp;million. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="exch"></A>EXCHANGE RATES  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The table below sets forth, for the periods indicated, information concerning the noon buying rate in New York City for cable transfers
as announced by the United States Federal Reserve Board for euro (expressed in dollars per &euro;1.00). The rates in this table are provided for your reference only. Unless otherwise
specified, the exchange rate used in this prospectus supplement is &euro;1.00&nbsp;= $1.3777 as at March&nbsp;31, 2014. </FONT></P>
 <DIV style="padding:0pt;position:relative;width:80%;margin-left:10%;">
<p style="font-family:times;"></FONT></P>

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<TD WIDTH="54pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="54pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="51pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="54pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
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<TR VALIGN="BOTTOM">
<TH NOWRAP  ALIGN="LEFT" style="font-family:times;"><DIV style="border-bottom:solid #000000 1.0pt;margin-bottom:0pt;width:23pt;"><FONT SIZE=1><B>Period

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 </B></FONT></DIV></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>High </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Low </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Period Average(1) </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Period End </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>2009</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.5100</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.2547</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3935</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.4332</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>2010</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.4536</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.1959</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3261</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3269</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>2011</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.4875</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.2926</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3931</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.2973</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>2012</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3463</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.2062</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.2859</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3186</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>2013</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3816</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.2774</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3281</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3779</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>January 2014</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3862</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3500</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3618</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3500</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>February 2014</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3806</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3507</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3665</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3806</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>March 2014</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3927</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3731</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3828</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3777</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>April 2014</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3898</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3704</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3810</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>1.3870</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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 </DIV>
<DIV style="padding:0pt;position:relative;text-align:left;margin-left:10%;">
 <DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>The
average of the noon buying rates on each day of the relevant year or period.  </FONT></DD></DL>
 </DIV>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-18</FONT></P>

<HR NOSHADE>
<P style='font-family:times;page-break-before:always'></p>
<!-- ZEQ.=1,SEQ=20,EFW="2220048",CP="AON PLC",DN="1",CHK=352405,FOLIO='S-18',FILE='DISK128:[14ZBJ1.14ZBJ79801]DC79801A.;21',USER='SLYUBOM',CD=';6-MAY-2014;17:02' -->
<A NAME="page_dc79801_1_19"> </A>

<P style="font-family:times;"><FONT SIZE=2><A
HREF="#bg79801a_main_toc">Table of Contents</A></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="ratio"></A>RATIO OF EARNINGS TO FIXED CHARGES  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our ratios of earnings to fixed charges for each of the periods indicated are as follows: </FONT></P>
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<p style="font-family:times;"></FONT></P>

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<TD WIDTH="" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="18pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
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<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=5 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Three months<BR>
ended<BR>
March&nbsp;31,(1) </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=14 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Year ended December&nbsp;31,(2) </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2014 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2013 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2013 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2012 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2011 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2010 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2009 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ratio of earnings to fixed charges</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>6.9</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>6.9</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>6.7</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>6.0</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>5.6</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>5.6</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>6.5</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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<DIV style="padding:0pt;position:relative;text-align:left;margin-left:10%;">
 <DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Refer
to Exhibit&nbsp;12.1 of our Quarterly Report on Form&nbsp;10-Q for the quarter ended March&nbsp;31, 2014 for the computation of these ratios.
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(2)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Refer
to Exhibit&nbsp;12.1 of our Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2013 for the computation of these ratios. </FONT></DD></DL>
 </DIV>
 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-19</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><A
HREF="#bg79801a_main_toc">Table of Contents</A></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="capi"></A>CAPITALIZATION  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following table sets forth Aon&nbsp;plc's capitalization as of March&nbsp;31, 2014, on an actual basis and on an as adjusted
basis to give effect to this offering as if it had occurred on such date. You should read the data set forth in the table below in conjunction with "Summary&#151;Selected Historical Financial
Data" and "Use of Proceeds" appearing elsewhere in this prospectus supplement, as well as "Management's Discussion and Analysis of Financial Condition and Results of Operations," which is incorporated
by reference into this prospectus supplement from our Quarterly Report on Form&nbsp;10-Q for the quarter ended March&nbsp;31, 2014. </FONT></P>
 <DIV style="padding:0pt;position:relative;width:80%;margin-left:10%;">
<p style="font-family:times;"></FONT></P>

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<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="45pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="58pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
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<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=5 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>As of March&nbsp;31, 2014 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Actual </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>As&nbsp;Adjusted </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=1><B>(Millions)</B></FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="LEFT" style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="LEFT" style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Cash and cash equivalents(1)</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>338</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>338</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Outstanding debt</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:40pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% Notes offered hereby</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>4.45% senior notes due May 2043</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>250</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>250</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>3.50% senior notes due September 2015</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>600</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>600</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>3.125% senior notes due May 2016</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>500</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>500</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>4.25% senior notes due December 2042</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>256</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>256</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>5.00% senior notes due September 2020</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>600</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>600</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>6.25% senior notes due September 2040</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>300</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>300</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>6.25% EUR&nbsp;500 debt securities due July 2014, including fair value hedge</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>691</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>691</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>8.205% junior subordinated deferrable interest debentures due January 2027</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>521</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>521</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>4.76% CAD senior unsecured debentures due March 2018</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>338</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>338</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>4.00% senior notes due November 2023</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>350</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>350</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:30pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Other</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>340</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>340</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total debt</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
4,746</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Less short-term debt and current portion of long-term debt</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>1,077</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total long-term debt</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
3,669</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Equity</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:20pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ordinary Shares&#151;$0.01 nominal value Authorized: 750 shares (issued: 296.5)</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>3</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>3</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:20pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Additional paid-in capital</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>4,859</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>4,859</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:20pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Retained earnings</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>5,404</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>5,404</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:20pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Accumulated other comprehensive loss</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>(2,320</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>)</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>(2,320</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>)</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:20pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total Aon shareholders' equity</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
7,946</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
7,946</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:20pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Noncontrolling interests</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>60</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>60</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:20pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total equity</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
8,006</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
8,006</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total capitalization</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
12,752</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:times;"><FONT SIZE=2><BR>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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 <DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Cash
and cash equivalents does not take into account expenses and discounts on issuance associated with this offering.  </FONT></DD></DL>
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 <P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-20</FONT></P>

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</FONT> <FONT SIZE=2>
<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="desc"></A>DESCRIPTION OF THE SECURITIES  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><I>The following description of the particular terms of the Securities offered by this prospectus supplement
supplements, and to the extent inconsistent therewith, replaces the description of the general terms and provisions of the Securities set forth under the caption "Description of Debt Securities and
Guarantees" in the accompanying prospectus. Terms used in this prospectus supplement that are otherwise not defined have the meanings given to them in the accompanying
prospectus.</I></FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc
will issue &euro;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;aggregate principal amount of&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% senior notes due 2026 (the "Notes") pursuant to an indenture dated May&nbsp;24,
2013 among Aon&nbsp;plc, as issuer, Aon Delaware, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as Trustee (the "Trustee"). The following is a summary of the material provisions
of the indenture. It does not include all of the provisions of the indenture. We urge you to read the indenture because it, not this description, defines your rights. The terms of the Notes include
those stated in the indenture and those made part of the indenture by reference to the Trust Indenture Act of 1939, as amended (the "TIA"). A copy of the indenture may be obtained from the Issuer. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc
will issue the Notes in fully registered form in denominations of &euro;100,000 and integral multiples of &euro;1,000 in excess thereof. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Bank of New York Mellon, London Branch will initially act as Principal Paying Agent for the Notes. The Bank of New York Mellon Trust Company, N.A. will initially act as registrar for
the Notes. Upon notice to the Trustee, Aon&nbsp;plc may change any paying agent or registrar. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Notes may be presented for registration of transfer and exchange at the offices of the registrar. It is expected that Aon&nbsp;plc will pay principal and interest (and premium, if
any) on the Notes (and, as necessary, Aon Delaware will pay such amounts in relation to the Guarantee) at the Trustee's corporate office by wire transfer, if book-entry at the clearing systems, or
check mailed to the registered address of holders. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Principal, Maturity and Interest  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Notes will mature on&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2026. &euro;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;in
aggregate principal amount of Notes will be issued
in this offering. After the issue date of the Notes, additional Notes ("Additional Notes") may be issued from time to time; </FONT><FONT SIZE=2><I>provided</I></FONT><FONT SIZE=2>, </FONT> <FONT SIZE=2><I>however</I></FONT><FONT SIZE=2>, that if the
Additional Notes are not fungible with the Notes for U.S. federal income tax purposes, the Additional Notes will have separate ISIN
and Common Code numbers. The Notes and any Additional Notes that are actually issued will be treated as a single class for all purposes, under the indenture, including, without limitation, as to
waivers, amendments, redemptions and offers to purchase. Unless the context otherwise requires, for all purposes of the indenture and this "Description of the Securities," references to the Notes
include any Additional Notes actually issued. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest
on the Notes will accrue at the rate of&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% per annum and will be payable annually in arrears in cash on&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;of each year, commencing
on&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;,
2015, to the persons who are registered holders at the close of business on the&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;immediately preceding the interest payment date. Interest on the Notes will accrue from the most
recent
date to which interest has been paid or, if no interest has been paid, from and including the date of issuance, to but excluding the actual interest payment date. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest
will be computed on the basis of the actual number of days in the period for which interest is being calculated and the actual number of days from and including the last date on
which interest was paid on the Notes (or the date of issuance if no interest has been paid on the Notes), to but excluding the next scheduled interest payment date. This payment convention is referred
to as ACTUAL/ACTUAL (ICMA) as defined in the rulebook of the International Capital Market Association. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-21</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2><A
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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
any interest payment date falls on a day that is not a business day, the interest payment will be made on the next succeeding business day, and we will not be liable for any
additional interest as a result of the delay in payment. If a maturity date falls on a day that is not a business day, the related payment of principal and interest will be made on the next succeeding
business day, and no interest will accrue on the amounts so payable for the period from and after such date to the next succeeding business day. The term "business day" means any day, other than a
Saturday or a Sunday, (1)&nbsp;which is not a day on which banking institutions are authorized or obligated by law or executive order to close in London and (2)&nbsp;on which the Trans-European
Automated Real-time Gross Settlement Express Transfer system (the TARGET2 system), or any successor thereto, is open. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
intend to apply to list the Notes on the New York Stock Exchange or another "recognised stock exchange" for purposes of Section&nbsp;1005 of the U.K. Income Tax Act 2007. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Issuance and Payment in Euro  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Initial holders will be required to pay for the Notes in euro, and all payments of interest and principal, including payments made upon
any redemption of the Notes or any payment made under the Guarantee, will be payable in euro. If, on or after the date of this prospectus supplement, the euro is unavailable to us due to the
imposition of exchange controls or other circumstances beyond our control or if the euro is no longer being used by the then member states of the European Monetary Union that have adopted the euro as
their currency or for the settlement of transactions by public institutions of or within the international banking community, then all payments in respect of the Notes will be made in U.S. dollars
until the euro is again available to us or so used. The amount payable on any date in euro will be converted into U.S. dollars on the basis of the most recently available market exchange rate for
euro. See "Exchange Rates" for historical information on euro-dollar exchange rates. Any payment in respect of the Notes so made in U.S. dollars will not constitute an event of default under the Notes
or the indenture governing the Notes. Neither the trustee nor any paying agent shall have any responsibility for any calculation or conversion in connection with the forgoing. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Investors
will be subject to foreign exchange risks as to payments of principal and interest that may have important economic and tax consequences to them. See "Risk Factors." </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Optional Redemption  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc may at its option redeem all of the Notes at any time and some of the Notes from time to time, at a redemption price
equal to the greater of: </FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(i)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>100%
of the principal amount of the Notes being redeemed; and
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(ii)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the
sum of the present values of the remaining scheduled payments of principal and interest thereon (not including any portion of such payments of interest
accrued as of the redemption date), discounted to the date of redemption on an annual basis (ACTUAL/ACTUAL (ICMA)) at the applicable Comparable Government Bond Rate (as defined below), plus
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;basis points </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>plus,
in either case, accrued and unpaid interest on the principal amount of the Notes being redeemed to but excluding the redemption date. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On
or after&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2026, Aon&nbsp;plc may redeem any or all of the Notes at a redemption price equal to 100% of the principal amount of the Notes being redeemed, plus accrued
and unpaid interest on the principal amount of the Notes being redeemed to but excluding the redemption date. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Notwithstanding
the foregoing, installments of interest on Notes being redeemed that are due and payable on interest payment dates falling on or prior to a redemption date will be
payable on the </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-22</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2>interest
payment date to the registered holders as of the close of business on the relevant record date according to the Notes and the indenture. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"Comparable
Government Bond Rate" means the price, expressed as a percentage (rounded to three decimal places, with 0.0005 being rounded upwards), at which the gross redemption yield on
the Notes to be redeemed, if they were to be purchased at such price on the third business day prior to the date fixed for redemption, would be equal to the gross redemption yield on such business day
of the Comparable Government Bond (as defined below) on the basis of the middle market price of the Comparable Government Bond prevailing at 11:00&nbsp;a.m. (London time) on such business day as
determined by an independent investment bank selected by us. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"Comparable
Government Bond" means, in relation to any Comparable Government Bond Rate calculation, at the discretion of an independent investment bank selected by us, a German
government bond whose maturity is closest to the maturity of the Notes to be redeemed, or if such independent investment bank in its discretion determines that such similar bond is not in issue, such
other German government bond as such independent investment bank may, with the advice of three brokers of, and/or market makers in, German government bonds selected by us, determine to be appropriate
for determining the Comparable Government Bond Rate. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Notice
of any redemption described under "&#151;Optional Redemption" will be mailed at least 30&nbsp;days but not more than 90&nbsp;days before the redemption date to each
holder of the Notes to be redeemed. Unless we and Aon Delaware default in payment of the redemption price, on and after the redemption date, interest will cease to accrue on the Notes or portions
thereof called for redemption. If less than all the Notes are to be redeemed, the Notes to be redeemed shall be selected in accordance with applicable depositary procedures. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Guarantee  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under the Guarantee, Aon Delaware will fully and unconditionally guarantee the due and punctual payment of the principal, interest,
premium (if any) and all other amounts due under the Indenture and on the Notes when the Notes become due and payable, whether at maturity, pursuant to optional redemption, by acceleration or
otherwise, in each case after any applicable grace periods or notice requirements, according to the terms of the Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
obligations of Aon Delaware under the Guarantee will be unconditional, regardless of the enforceability of the Notes, and will not be discharged until all obligations under the Notes
and the indenture are satisfied. Holders of the Notes may proceed directly against Aon Delaware under the Guarantee if an event of default affecting the Notes occurs without first proceeding against
Aon&nbsp;plc. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Ranking  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Notes:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will be Aon&nbsp;plc's general unsecured obligation; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will be effectively subordinated to all of Aon&nbsp;plc's existing and future secured indebtedness to the extent of the
value of the assets securing such indebtedness; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will be structurally subordinated to the existing and future claims of creditors of Aon&nbsp;plc's subsidiaries (though
you may have a direct claim as to Aon Delaware by virtue of its obligations with respect to the Guarantee); </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will rank equally in right of payment with Aon&nbsp;plc's existing and future unsecured and unsubordinated indebtedness;
and </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-23</FONT></P>

<HR NOSHADE>
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<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will be senior in right of payment to any of Aon&nbsp;plc's existing and future subordinated indebtedness. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Guarantee:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will be Aon Delaware's general unsecured obligation; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will be effectively subordinated to all of Aon Delaware's existing and future secured indebtedness to the extent of the
value of the assets securing such indebtedness; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will be structurally subordinated to the existing and future claims of creditors of Aon Delaware's subsidiaries; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will rank equally in right of payment with Aon Delaware's existing and future unsecured and unsubordinated indebtedness;
and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will be senior in right of payment to any of Aon Delaware's existing and future subordinated indebtedness. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As
noted above, the Notes will be structurally subordinated to all of Aon&nbsp;plc's subsidiaries' existing and future obligations (though you may have a direct claim as to Aon
Delaware by virtue of its obligations with respect to the Guarantee). In addition, the Guarantee will be effectively subordinated to all of Aon Delaware's existing and future secured indebtedness to
the extent of the value of the assets securing such indebtedness and structurally subordinated to all of Aon Delaware's subsidiaries' existing and future obligations. See "Risk Factors&#151;The
Notes will be effectively subordinated to all of Aon&nbsp;plc's existing and future secured debt (to the extent of the value of the assets securing such indebtedness) and to the existing and future
debt of Aon&nbsp;plc's subsidiaries (though you may have a direct claim as to Aon Delaware by virtue of its obligations with respect to the Guarantee), and the Guarantee will be effectively
subordinated to all of Aon Delaware's existing and future secured debt (to the extent of the value of the assets securing such indebtedness) and to the existing and future debt of Aon Delaware's
subsidiaries." As of March&nbsp;31, 2014, Aon&nbsp;plc had no secured indebtedness for borrowed money and Aon&nbsp;plc's subsidiaries (excluding Aon Delaware) had approximately
$4.0&nbsp;billion of outstanding indebtedness and other liabilities, including trade payables, pension and other post employment liabilities, other current liabilities and non-current liabilities,
but excluding intercompany liabilities and fiduciary liabilities, constituting approximately 63.6% of Aon&nbsp;plc's total consolidated liabilities (other than those of Aon Delaware). As of
March&nbsp;31, 2014, Aon Delaware had no secured indebtedness for borrowed money and had approximately $3.8&nbsp;billion of consolidated outstanding indebtedness and other liabilities, including
trade payables, pension and other post employment liabilities, other current liabilities and non-current liabilities, but excluding intercompany liabilities and fiduciary liabilities. As of
March&nbsp;31, 2014, Aon Delaware's subsidiaries had no secured indebtedness for
borrowed money and had approximately $3.2&nbsp;billion of outstanding indebtedness and other liabilities including trade payables, pension and other post employment liabilities, other current
liabilities and non-current liabilities, but excluding intercompany liabilities and fiduciary liabilities, constituting approximately 45.7% of Aon Delaware's total consolidated liabilities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Payment of Additional Amounts  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Payments made by Aon&nbsp;plc, Aon Delaware or a paying agent, as applicable, on the Notes or in respect of the Guarantee will be
made free and clear of and without withholding or deduction for or on account of any present or future income, stamp or other tax, duty, levy, impost, assessment or other governmental charge of any
nature whatsoever imposed or levied by or on behalf of the government of the United Kingdom or the United States (each, a "Home Country Jurisdiction"), of any territory of the Home Country
Jurisdiction or by any authority or agency therein or thereof having the power to tax, which we refer to collectively as "Taxes," unless Aon&nbsp;plc, Aon Delaware or a paying agent is required to
withhold or deduct Taxes by law. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-24</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
Aon&nbsp;plc, Aon Delaware or a withholding agent is required to withhold or deduct any amount for or on account of Taxes from any payment made with respect to the Notes or the
Guarantee, Aon&nbsp;plc or Aon Delaware, as applicable, will pay such additional amounts as may be necessary so that the net amount received by each beneficial owner (including additional amounts)
after such withholding or deduction will not be less than the amount the beneficial owner would have received if the Taxes had not been withheld or deducted; </FONT> <FONT SIZE=2><I>provided</I></FONT><FONT SIZE=2> that no additional amounts will be
payable with respect to Taxes:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that would not have been imposed but for the existence of any present or former connection between such Holder or
beneficial owner of the Securities (or between a fiduciary, settlor, beneficiary, member or shareholder of, or possessor of a power over, such holder or beneficial owner, if such Holder or beneficial
owner is an estate, trust, partnership or corporation) and such Home Country Jurisdiction or any political subdivision or territory or possession thereof or therein or area subject to its
jurisdiction, including, without limitation, such Holder or beneficial owner (or such fiduciary, settlor, beneficiary, member, shareholder or possessor) being or having been a citizen or resident
thereof or treated as a resident thereof or domiciled thereof or a national thereof or being or having been present or engaged in trade or business therein or having or having had a permanent
establishment therein; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that are estate, inheritance, gift, sales, transfer, personal property, wealth or similar taxes, duties, assessments or
other governmental charges; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>payable other than by withholding from payments of principal of and premium, if any, or interest on the Notes or from
payments in respect of the Guarantee; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that would not have been imposed but for the failure of the applicable recipient of such payment to comply with any
certification, identification, information, documentation or other reporting requirement to the extent: </FONT> <FONT SIZE=2>
<BR><BR></FONT>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>such compliance is required by applicable law or administrative practice or an applicable treaty as a precondition to
exemption from, or reduction in, the rate of deduction or withholding of such Taxes; and  </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>at least 30&nbsp;days before the first payment date with respect to which such additional amounts shall be payable,
Aon&nbsp;plc or Aon Delaware, as the case may be, has notified such recipient in writing that such recipient is required to comply with such requirement; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD></DL>
</DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that would not have been imposed but for the presentation of a Security (where presentation is required) for payment on a
date more than 30&nbsp;days after the date on which such payment became due and payable or the date on which payment thereof was duly provided for, whichever occurred later; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that are imposed on a payment and are required to be made pursuant to European Council Directive 2003/48/EC or any other
Directive amending, supplementing or replacing such Directive, or any law implementing or complying with, or introduced in order to conform to, such Directive or Directives; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that are imposed or withheld pursuant to Sections&nbsp;1471 through 1474 of the U.S. Internal Revenue Code of 1986, as
amended (the "Code"), as of the issue date (or any amended or successor version of such sections), any regulations promulgated thereunder, any official interpretations thereof, any similar law or
regulation adopted pursuant to an intergovernmental agreement between a non-U.S. jurisdiction and the United States with respect to the foregoing or any agreements entered into pursuant to
Section&nbsp;1471(b)(1) of the Code; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that would not have been imposed if presentation for payment of a Security had been made to a paying agent other than the
paying agent to which the presentation was made; or </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-25</FONT></P>

<HR NOSHADE>
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<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any combination of the foregoing items; </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>nor
shall additional amounts be paid with respect to any payment of the principal of or premium, if any, or interest, if any, on any Note or any payment in respect of the Guarantee to any such Holder
who is a fiduciary or a partnership or a beneficial owner who is other than the sole beneficial owner of such payment to the extent a beneficiary or settlor with respect to such fiduciary or a member
of such partnership or a beneficial owner would not have been entitled to such additional amounts had it been the Holder of the Security. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All
references in this prospectus supplement and the accompanying prospectus, other than under "&#151;Defeasance" in the accompanying prospectus, to the payment of the principal
of or premium, if any, or interest, if any, on or the net proceeds received on the sale or exchange of, any Notes or any payment made under the Guarantee shall be deemed to include additional amounts
to the extent that, in that context, additional amounts are, were or would be payable. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc
has agreed in the indenture that if it maintains a paying agent with respect to the Notes in any member state of the European Union, it will maintain a paying agent in at
least one member state that will not be obliged to withhold or deduct taxes pursuant to European Council Directive 2003/48/EC or any other Directive amending, supplementing or replacing such Directive
or any law implementing or complying with, or introduced in order to conform to such Directive or Directives, provided there is at
least one member state that does not require a paying agent to withhold or deduct pursuant to such Directive. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc's
and Aon Delaware's obligations to pay additional amounts if and when due will survive the termination of the indenture and the payment of all other amounts in respect of
the Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If,
as a result of Aon&nbsp;plc's or Aon Delaware's consolidation, merger with or conversion into a successor person organized under the laws of a jurisdiction other than the United
Kingdom or the United States (or, in each case, any political subdivision or taxing authority thereof) as described in the accompanying prospectus under "Description of the Debt Securities and
Guarantees&#151;Consolidation and Merger," or the conveyance, transfer or lease by Aon&nbsp;plc or Aon Delaware of its assets substantially as an entirety to such successor person, and such
an entity expressly assumes the obligations of Aon&nbsp;plc or Aon Delaware under the indenture and the Notes or the Guarantee, as applicable, such successor person will pay additional amounts on
the same basis as described above, except that references to a "Home Country Jurisdiction" will be treated as references to the United Kingdom, the United States and the country in which such
successor person is organized or resident (or deemed resident for tax purposes). </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Optional Tax Redemption  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc may redeem the Notes in whole, but not in part, at its option at any time prior to maturity, upon the giving of not less
than 30 nor more than 90&nbsp;days' notice of tax redemption to the Holders, at a redemption price equal to the principal amount of the Notes plus accrued and unpaid interest, if any, to the
redemption date, if:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>it determines that, as a result of any change in, amendment to or announced proposed change in the laws or any regulations
or rulings promulgated thereunder of a Home Country Jurisdiction (or of any political subdivision or taxing authority thereof) or, in the event of the assumption of its or Aon Delaware's obligations
under the Notes or the Guarantee, as applicable, by a successor person not organized under the laws of a Home Country Jurisdiction (or, in each case, any political subdivision or taxing authority
thereof as described in the accompanying prospectus under "Description of the Debt Securities and Guarantees&#151;Consolidation and Merger"), the jurisdiction in which such successor person is
organized (or deemed resident for tax purposes), or any change in the application or official interpretation of such laws, regulations or rulings, or </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-26</FONT></P>

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<UL>
<UL>

<P style="font-family:times;"><FONT SIZE=2>(in
either case) any change in the application or official interpretation of, or any execution of or amendment to, any treaty or treaties affecting taxation to which any such jurisdiction is a party,
which change, execution or amendment becomes effective on or after (i)&nbsp;the issue date of the Notes or (ii)&nbsp;in the event of the assumption by a successor person of Aon&nbsp;plc's or Aon
Delaware's obligations under the indenture and the Notes or the Guarantee, as applicable, as described in the accompanying prospectus under "Description of the Debt Securities and
Guarantees&#151;Consolidation and Merger," under the laws of a jurisdiction other than a Home Country Jurisdiction (or, in each case, any political subdivision or taxing authority thereof),
with respect to taxes imposed by such other jurisdiction, the date of the transaction resulting in such assumption and, in the case of either of (i)&nbsp;or (ii), Aon&nbsp;plc, Aon Delaware or
such successor person, as applicable, would be required to pay additional amounts (as described under "&#151;Payment of Additional Amounts") with respect to the Notes or the Guarantee on the
next succeeding interest payment date and the payment of such additional amounts cannot be avoided by the use of reasonable measures available to Aon&nbsp;plc, Aon Delaware or such successor person,
as applicable; or </FONT></P>

</UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>it determines, based upon an opinion of independent counsel of recognized standing that, as a result of any action taken
by any legislative body of, taxing authority of, or any action brought in a court of competent jurisdiction in, a Home Country Jurisdiction (or any political subdivision or taxing authority thereof)
or, in the event of the assumption of its or Aon Delaware's obligations under the Notes or Guarantee, as applicable, by a successor person not organized under the laws of a Home Country Jurisdiction
(or, in each case, any political subdivision thereof as described under "Description of the Debt Securities and Guarantees&#151;Consolidation and Merger"), the jurisdiction in which such
successor person is organized (or deemed resident for tax purposes), which action is taken or brought on or after (i)&nbsp;the issue date of the Notes or (ii)&nbsp;in the event of the assumption
by a successor person of Aon&nbsp;plc's or Aon Delaware's obligations under the indenture and the Notes or the Guarantee, as applicable, as described in the accompanying prospectus under
"Description of the Debt Securities and Guarantees&#151;Consolidation and Merger," under the laws of a jurisdiction other than a Home Country Jurisdiction (or, in each case, any political
subdivision or taxing authority thereof), with respect to taxes imposed by such other jurisdiction, the date of the transaction resulting in such assumption and, in the case of either of
(i)&nbsp;and (ii), there is a substantial probability that the circumstances described above would exist. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No
notice of any such redemption may be given earlier than 90&nbsp;days prior to the earliest date on which Aon&nbsp;plc, Aon Delaware or such successor person, as applicable, would
be obligated to pay any additional amounts. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc,
Aon Delaware or such successor person will also pay to each Holder, or make available for payment to each such Holder, on the redemption date, any additional amounts (as
described under "Payment of Additional Amounts") resulting from the payment of such redemption price by it. Prior to the delivery of any notice of redemption, Aon&nbsp;plc or such successor person
will deliver to the Trustee an officer's certificate stating that it is entitled to effect or cause a redemption and setting forth a statement of facts showing that the conditions precedent of the
right so to redeem or cause such redemption have occurred, and in the case of a redemption based on an opinion of independent counsel referred to in the second bullet above, such independent counsel's
opinion. Delivery of any notice of redemption will be conclusive and binding on the Holders of the Securities. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any
notice of redemption will be irrevocable once an officer's certificate has been delivered to the Trustee. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-27</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><B> Governing Law  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The indenture and the Securities will be governed by, and construed in accordance with, the laws of the State of New York. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2><B> Concerning Our Relationship with the Trustee  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon Delaware and Aon&nbsp;plc have commercial deposits and custodial arrangements with The Bank of New York Mellon Trust Company,
N.A. and The Bank of New York Mellon, London Branch, collectively "BNYM," and may have borrowed money from BNYM in the normal course of business. Aon Delaware and Aon&nbsp;plc may enter into similar
or other banking relationships with BNYM in the future in the normal course of business. In addition, Aon Delaware and Aon&nbsp;plc have provided brokerage and other insurance services in the
ordinary course of our business for BNYM. BNYM may also act as trustee with respect to other debt securities issued by Aon Delaware and Aon&nbsp;plc. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2><B> Offers to Purchase; Open Market Purchases  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Neither Aon Delaware nor Aon&nbsp;plc is required to make any sinking fund payments or any offers to purchase with respect to the
Securities. Aon Delaware or Aon&nbsp;plc may at any time and from time to time purchase Securities in the open market or otherwise. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-28</FONT></P>

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<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="mate"></A>MATERIAL UNITED STATES FEDERAL INCOME TAX CONSEQUENCES  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following discussion is a general summary of the material U.S. federal income tax consequences of the acquisition, ownership and
disposition of the Notes pursuant to this offering, but does not purport to be a complete analysis of all potential tax effects. The summary is limited to consequences relevant to a U.S. Holder (as
defined below), except to the extent discussed in "&#151;</FONT><FONT SIZE=2><I>Foreign Account Tax Compliance</I></FONT><FONT SIZE=2>." This discussion is based upon the Internal Revenue Code
of 1986, as amended (the "Code"), the U.S. Treasury regulations promulgated thereunder, administrative pronouncements and judicial decisions, all as of the date hereof and all of which are subject to
change, possibly on a retroactive basis. We have not sought and will not seek any rulings from the Internal Revenue Service (the "IRS") regarding the matters discussed below. There can be no assurance
the IRS or a court will not take a contrary position to that discussed below regarding the tax consequences of the acquisition, ownership and disposition of the Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
discussion applies only to U.S. Holders that acquire the Notes in connection with their initial issuance at their original "issue price" within the meaning of section&nbsp;1273 of
the Code (i.e.,&nbsp;the first price at which a substantial amount of the Notes is sold to the public for cash) and hold the Notes as "capital assets" within the meaning of section&nbsp;1221 of
the Code (generally, property held for investment). This discussion does not address all aspects of U.S. federal income taxation that might be
important to particular investors in light of their individual circumstances or the U.S. federal income tax consequences applicable to special classes of taxpayers, including, without limitation,
banks and other financial institutions, insurance companies, real estate investment trusts, regulated investment companies, tax-exempt organizations or governmental organizations, S corporations,
partnerships or other entities or arrangements treated as partnerships for U.S. federal income tax purposes or other pass-through entities and investors therein, dealers in securities, traders in
securities, persons liable for U.S. federal alternative minimum tax or the Medicare contribution tax on net investment income, U.S. Holders whose functional currency is not the U.S. dollar, U.S.
expatriates and former citizens or long-term residents of the United States, "controlled foreign corporations," "passive foreign investment companies," and corporations that accumulate earnings to
avoid U.S. federal income tax, persons deemed to sell the Notes under the constructive sale provisions of the Code, and persons holding the Notes as part of a hedging or conversion transaction or
other integrated investment or a straddle or other risk reduction strategy. The discussion does not address any foreign, state, local or non-income tax consequences of the acquisition, ownership or
disposition of the Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For
purposes of this discussion, a "U.S. Holder" means a beneficial owner of a Note that, for U.S. federal income tax purposes, is or is treated
as:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>an individual who is a citizen or resident of the United States; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>a corporation created or organized in or under the laws of the United States, any state within the United States, or the
District of Columbia; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>an estate, the income of which is subject to U.S. federal income taxation regardless of its source; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>a trust, if (i)&nbsp;a U.S. court is able to exercise primary supervision over the trust's administration and one or
more "United States persons" (as defined in the Code) have the authority to control all substantial decisions of the trust, or (ii)&nbsp;a valid election is in place under applicable U.S. Treasury
regulations to treat such trust as a United States person for U.S. federal income tax purposes. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
an entity treated as a partnership for U.S. federal income tax purposes holds a Note, the tax treatment of a partner will generally depend upon the status of the partner, the
activities of the partnership and certain determinations made at the partner level. Such partnerships and partners in </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-29</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>such
partnerships should consult their own tax advisors about the U.S. federal income and other tax consequences of the acquisition, ownership and disposition of a Note. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
discussion is for informational purposes only and is not tax advice. Holders should consult their own tax advisors regarding the application of the U.S. federal income tax laws to
their particular situations and the consequences of the acquisition, ownership and disposition of the Notes under U.S. federal tax laws (including estate or gift tax laws), as well as foreign, state
or local laws and tax treaties, and the possible effects of changes in tax laws. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Payments of Interest  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Payments of qualified stated interest ("QSI") on Notes (including any amounts withheld and any additional amounts paid) beneficially
owned by a U.S. Holder generally will be taxable as ordinary interest income at the time payments are accrued or are received in accordance with the U.S. Holder's regular method of accounting for U.S.
federal income tax purposes. QSI generally means stated interest that is unconditionally payable in cash or in property at least annually at a single fixed rate. Interest on the Notes are generally
required to be paid annually, subject to deferral in certain circumstances. Although applicable U.S. Treasury regulations provide that interest will not fail to be treated as QSI merely because
payment may be deferred if the payment date falls on a Saturday, Sunday or U.S. federal holiday (and additional interest is not payable as a result of such deferral), interest payments on the Notes
may be deferred if the payment date falls on a day on which banking institutions in London or the TARGET2 system are closed. It is unclear whether interest on the Notes will be treated as QSI because
such interest may be deferred in circumstances not specified in applicable U.S. Treasury regulations. Although not free from doubt, we intend to take the position (to the extent we are required to do
so), and this disclosure assumes, that the payments of stated interest under the Notes will be treated as QSI. If the payments of stated interest were not treated as QSI, a U.S. Holder of the Notes
would be required to include stated interest at the time payments are accrued, regardless of the U.S. Holder's method of accounting. U.S. Holders should consult their tax advisors regarding the U.S.
federal income tax treatment of payments of stated interest. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subject
to the discussion of exchange gain or loss below, interest income on a Note will constitute foreign source income and will generally constitute "passive category income" for U.S.
foreign tax credit purposes. Prospective purchasers should consult their tax advisors concerning the applicability of the foreign tax credit and source of income rules to income attributable to the
Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A
cash basis U.S. Holder that receives an interest payment denominated in euro will be required to include in income the U.S. dollar value of the euro interest payment based on the
exchange rate in effect on the date of receipt, regardless of whether the payment is in fact converted into U.S. dollars. A cash basis U.S. Holder generally will not have exchange gain or loss on the
receipt of the interest payment but may have exchange gain or loss when the holder disposes of any euro such holder receives (as discussed below under "&#151;</FONT><FONT SIZE=2><I>Exchange of
Foreign Currencies</I></FONT><FONT SIZE=2>"). </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An
accrual basis U.S. Holder that receives an interest payment denominated in euro may determine the amount of income recognized in accordance with either two methods. Under the first
method, the amount of income accrued will be based on the average exchange rate in effect during the interest accrual period (or, in the case of an accrual period that spans two taxable years, the
part of the period within the taxable year). Under the second method, an accrual basis U.S. Holder may elect to determine the amount of income accrued based on the exchange rate in effect on the last
day of the accrual period (or, in the case of an accrual period that spans two taxable years, the exchange rate in effect on the last day of the part of the period within the taxable year).
Alternatively, if a payment of interest is actually received within five business days of the last day of the accrual period, an electing accrual basis U.S. Holder may instead translate the accrued
interest into U.S. dollars at the exchange </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-30</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>rate
on the date of actual receipt. Any such election will apply to all debt instruments held by the electing U.S. Holder and will be irrevocable without the consent of the IRS. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Upon
an accrual basis U.S. Holder's receipt of an interest payment denominated in euro, the U.S. Holder may recognize U.S. source exchange gain or loss (taxable as U.S. source ordinary
income or loss) equal to the difference between the amount received (translated into U.S. dollars at the exchange rate on the date of receipt) and the amount previously accrued (translated into U.S.
dollars as described above), regardless of whether the payment is in fact converted into U.S. dollars. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Sale, Exchange, Redemption or Other Taxable Disposition of the Notes  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Upon the sale, exchange, redemption or other taxable disposition of the Notes, a U.S. Holder generally will recognize gain or loss
equal to the difference, if any, between (i)&nbsp;the amount realized upon the sale, exchange, redemption or other taxable disposition of the Notes, other than amounts attributable to accrued and
unpaid interest (which will be taxed as ordinary interest income to the extent such interest has not been previously included in income, as described above under
"&#151;</FONT><FONT SIZE=2><I>Payments of Interest</I></FONT><FONT SIZE=2>"), and (ii)&nbsp;the U.S. Holder's adjusted tax basis in the Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
amount realized by a U.S. Holder is the sum of cash plus the fair market value of all other property received on the sale, exchange, redemption or other taxable disposition. If a
U.S. Holder receives foreign currency on a sale or other taxable disposition of a Note, the amount realized will be translated into U.S. dollars based on the exchange rate on the date of disposition.
If the Notes are traded on an established securities market, a cash basis U.S. Holder and an electing accrual basis U.S. Holder will determine the U.S. dollar value of such foreign currency based on
the exchange rate in effect on the settlement date of the disposition. If an accrual basis U.S. Holder makes this election, the election must be applied consistently by such holder from year to year
and cannot be revoked without the consent of the IRS. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A
U.S. Holder's adjusted tax basis in the Notes generally will be its cost for the Notes. The cost of a Note purchased with euro will be the U.S. dollar value of the purchase price
determined based on the exchange rate on the date of purchase. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A
U.S. Holder will recognize exchange gain or loss (taxable as ordinary income or loss) on the sale or other taxable disposition of a Note equal to the difference, if any, between the
U.S. dollar value of the U.S. Holder's purchase price of the Note on (i)&nbsp;the date of sale or other taxable disposition and (ii)&nbsp;the date on which the U.S. Holder acquired the Note (or,
with respect to (i)&nbsp;and (ii), if such U.S. Holder is a cash basis or electing accrual basis taxpayer and the Notes are treated as being traded on an "established securities market" for this
purpose, the settlement date). Any such exchange gain or loss (including any exchange gain or loss with respect to the receipt of accrued but unpaid interest) will be realized only to the extent of
the total gain or loss realized on the sale or other taxable disposition by a U.S. Holder, and will generally be treated as U.S. source income. Prospective purchasers should consult their tax advisors
as to the foreign tax credit implications of the sale or other taxable disposition of Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gain
or loss in excess of exchange gain or loss a U.S. Holder recognizes on the sale, exchange, redemption or other taxable disposition of the Notes generally will be U.S. source capital
gain or loss. Such gain or loss generally will be long-term capital gain or loss if a U.S. Holder has held the Notes for more than one year. For non-corporate U.S. Holders, long-term capital gains are
taxed at a lower rate than ordinary income. The deductibility of capital losses is subject to limitations. A U.S. Holder should consult its own tax advisor regarding the deductibility of capital
losses in its particular circumstances. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-31</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><B><I> Exchange of Foreign Currencies  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A U.S. Holder will have a tax basis in any euro received as stated interest or any foreign currency received upon the sale or other
taxable disposition of a Note equal to the U.S. dollar value based on the exchange rate in effect on the date of receipt of such euro or other foreign currency. Any gain or loss realized by a U.S.
Holder on a sale or other taxable disposition of foreign currency, including their exchange for U.S. dollars, will be ordinary income or loss generally not treated as interest income or expense and
generally will be U.S. source income or loss for U.S. foreign tax credit purposes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Backup Withholding and Information Reporting  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In general, a U.S. Holder that is not an "exempt recipient" will be subject to U.S. federal backup withholding at the applicable rate
(currently 28%) with respect to payments on the Notes and the proceeds of a sale, exchange, redemption or other taxable disposition of the Notes, unless the U.S. Holder provides its taxpayer
identification number to the paying agent and certifies, under penalties of perjury, that it is not subject to backup withholding on an IRS Form&nbsp;W-9 (Request for Taxpayer Identification Number
and Certification) and otherwise complies with the applicable requirements of the backup withholding rules. Backup withholding is not an additional tax. The amount of any backup withholding from a
payment to a U.S. Holder may be allowed as a credit against such U.S. Holder's U.S. federal income tax liability and may entitle such U.S. Holder to a refund, provided the required information is
furnished to the IRS in a timely manner. In addition, payments on the Notes made to, and the proceeds of a sale or other taxable disposition received by, a U.S. Holder that is not an exempt recipient
generally will be subject to information reporting requirements. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Tax Return Disclosure Requirements  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Treasury regulations issued under the Code meant to require the reporting to the IRS of certain tax shelter transactions cover certain
transactions generally not regarded as tax shelters, including certain foreign currency transactions giving rise to losses in excess of a certain minimum amount (e.g.,&nbsp;$50,000 in the case of an
individual or trust), such as the receipt or accrual of interest or a sale or other taxable disposition of a foreign currency note or foreign currency received in respect of a foreign currency note.
U.S. Holders should consult their tax advisors to determine the tax return disclosure obligations, if any, with respect to an investment in the Notes, including any requirement to file IRS
Form&nbsp;8886 (Reportable Transaction Disclosure Statement). </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Individuals
that own "specified foreign financial assets" with an aggregate value in excess of $50,000 on the last day of the tax year or more than $75,000 at any time during the tax
year (or such larger values as specified in applicable Treasury regulations), generally are required to file an information report with respect to such assets with their tax returns. The Notes
generally will constitute specified foreign financial assets subject to these reporting requirements, unless the Notes are held in an account at a U.S. financial institution. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;U.S.
Holders are urged to consult their tax advisors regarding the application of the foregoing disclosure requirements to their ownership of the Notes, including the significant
penalties for non-compliance. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Foreign Account Tax Compliance  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to Sections&nbsp;1471 through 1474 of the Code (provisions commonly known as "FATCA"), a "foreign financial institution" may
be required to withhold U.S. tax on payments on certain debt instruments and the gross proceeds from the disposition of such debt instruments. However, the application of these rules is not clear. If
Aon&nbsp;plc were treated as a foreign financial institution, debt instruments issued by it on or prior to the date that is six months after the date on which applicable final Treasury regulations
are filed, generally would be "grandfathered" from FATCA unless "materially </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-32</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>modified"
(for U.S. federal income tax purposes) after such date. Non-U.S. governments have entered into agreements with the United States (and additional non-U.S. governments are expected to enter
into such agreements) to implement FATCA in a manner that alters the rules described herein. Holders should consult their own tax advisors on how these rules may apply to their investment in the
Notes. In the event any withholding under FATCA is required or advisable with respect to any payments on the Notes, there will be no additional amounts payable to compensate for the withheld amount. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>The U.S. federal income tax discussion set forth above may not be applicable depending upon a U.S. Holder's particular situation. Prospective purchasers of the
Notes should consult their own tax advisors with respect to the tax consequences to them of the acquisition, ownership and disposition of the Notes, including the tax consequences under state, local,
estate, foreign and other tax laws and tax treaties and the possible effects of changes in U.S. or other tax laws.</B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-33</FONT></P>

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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="cert"></A>CERTAIN UNITED KINGDOM TAX CONSEQUENCES  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following is a general summary of the U.K. withholding tax consequences and reporting requirements in relation to payments of
interest on the Notes and payments in respect of the Guarantee and of the U.K. stamp duty and stamp duty reserve tax consequences of the issue or transfer of the Notes. This summary does not deal with
other U.K. tax aspects of acquiring, holding or disposing of the Securities. This summary is based upon U.K. tax law and the published practice of HM Revenue and Customs ("HMRC") in effect on the date
of this prospectus supplement and is subject to any change in law or practice which may take effect after that date (including with retrospective effect). </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>Holders (or prospective holders) of Securities who are in any doubt as to their tax position should consult their professional advisors.</B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> U.K. Withholding Tax  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> Payments of interest on the Notes  </I></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If the Notes are and continue to be listed on a "recognised stock exchange" within the meaning of section&nbsp;1005 of the U.K.
Income Tax Act 2007, interest payments on the Notes may be made without withholding on account of U.K. tax. The Notes are intended to be listed on the New York Stock Exchange, which is currently a
recognised stock exchange for these purposes, or on another recognised stock exchange. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
all other circumstances, payments of interest on the Notes may be subject to withholding on account of U.K. income tax at the basic rate (currently 20&nbsp;per cent), subject to
such relief as may be available under the provisions of any applicable double tax treaty or any other relief or exemption that may apply. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2><I> Payments in respect of the Guarantee  </I></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Depending on the correct analysis under U.K. law of payments in respect of the Guarantee, it is possible that such payments would be
subject to withholding on account of U.K. income tax at the basic rate (currently 20&nbsp;per cent), subject to such relief as may be available under the provisions of any applicable double tax
treaty or any other exemption which may apply. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> Additional Amounts  </I></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In certain circumstances, additional amounts may be payable on the Securities and Guarantee payments in respect of U.K. withholding
tax. See "Description of the Securities&#151;Payment of Additional Amounts". </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Provision of Information  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Holders of Securities should be aware HMRC have powers to obtain certain information and documents relating to the Securities,
including in relation to interest and other payments derived from the Securities. This may include details of the beneficial owners of the Securities, the persons for whom the Securities are held and
the persons to whom payments derived from the Securities are or may be paid. Information may be obtained from a range of persons, including registrars, the registered holders of the Securities,
persons who make, receive or are entitled to receive payments derived from the Securities and persons by or through whom interest and payments treated as interest are paid or credited. Information
obtained by HMRC may be provided to tax authorities in other jurisdictions. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Stamp duty and stamp duty reserve tax  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No U.K. stamp duty or stamp duty reserve tax should be payable on the issue or transfer of the Notes. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-34</FONT></P>

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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="euro"></A>EUROPEAN UNION SAVINGS TAX DIRECTIVE  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under European Council Directive 2003/48/EC on the taxation of savings income in the form of interest payments (the "EU Savings
Directive"), each member state of the European Union must provide to the tax authorities of another member state details of payments of interest (and other similar income) paid by a person within its
jurisdiction to, or for the benefit of, an individual (or certain other types of person) resident in that other member state. However, for a transitional period, Austria and Luxembourg are instead
required (unless they elect otherwise during that period) to operate a withholding system in relation to such payments at a current rate of 35%. The ending of such transitional period is dependent
upon the conclusion of certain other agreements relating to information exchange with certain other countries. However, during that transitional period, withholding will not apply under the EU Savings
Directive to a payment if the beneficial owner of that payment authorizes an exchange of information instead. Luxemburg has announced that it will no longer apply the withholding system as from
January&nbsp;1, 2015 and will provide details of payments of interest (and similar income) as from this date. A number of non-EU countries and territories have adopted similar measures (either
provision of information or transitional withholding) in relation to payments made by a person within its jurisdiction to, or collected by such a person to, an individual resident in an EU member
state. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On
March&nbsp;24, 2014, the Council of the European Union adopted a directive amending the EU Savings Directive which will, when implemented, amend and broaden the scope of the
requirements described above. In particular, additional steps may be required in certain circumstances to be taken to identify the beneficial owner of interest payments. EU member states are required
to implement national legislation giving effect to these changes by January&nbsp;1, 2016 (which national legislation must apply from January&nbsp;1, 2017). </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
Aon&nbsp;plc maintains a paying agent in an EU member state with respect to the Notes, it is required to do so in a member state that will not be obliged to withhold or deduct tax
pursuant to the Directive or to such similar measures. Investors who are in any doubt as to their position should consult their professional advisers. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-35</FONT></P>

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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="prop"></A>PROPOSED FINANCIAL TRANSACTION TAX  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The European Commission has published a proposal for a Directive for a common Financial Transaction Tax ("FTT") in certain
participating Member States (not including the United Kingdom). The proposed FTT has very broad scope and could apply to certain dealings in financial instruments (including secondary market
transactions). The FTT could apply to persons both within and outside of the participating Member States. Generally, it would apply to certain transactions relating to financial instruments where at
least one party is a financial institution, and at least one party is established or deemed to be established in a participating Member State. A party may be deemed to be "established" in a
participating Member State in a broad range of circumstances, including (i)&nbsp;by transacting with a person established in a participating Member State or (ii)&nbsp;where the financial
instrument which is the subject of the transaction is issued in a participating Member State. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
proposed Directive remains subject to negotiation between the participating Member States and is the subject of legal challenge. It may therefore be altered prior to any
implementation, the timing of which remains unclear. Prospective holders of Notes are advised to seek their own professional advice in relation to the FTT. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-36</FONT></P>

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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="book"></A>BOOK-ENTRY, DELIVERY AND FORM  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We have obtained the information in this section concerning Clearstream Banking, </FONT> <FONT SIZE=2><I>soci&eacute;t&eacute; anonyme</I></FONT><FONT SIZE=2> ("Clearstream, Luxembourg")
and Euroclear Bank&nbsp;S.A./N.V., as operator of the Euroclear System
("Euroclear") and their book-entry systems and procedures from sources that we believe to be reliable. We take no responsibility for an accurate portrayal of this information. In addition, the
description of the clearing systems in this section reflects our understanding of the rules and procedures of Clearstream, Luxembourg and Euroclear as they are currently in effect. Those systems could
change their rules and procedures at any time. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Notes will initially be represented by one or more fully registered global Notes. Each such global note will be deposited with, or on behalf of, a common depositary, and registered
in the name of the nominee of the common depositary for the accounts of Clearstream, Luxembourg and Euroclear. You may hold your interests in the global Notes through Clearstream, Luxembourg or
Euroclear, either as a participant in such systems or indirectly through organizations which are participants in such systems. Clearstream, Luxembourg and Euroclear will hold interests in the global
Notes on behalf of their respective participating organizations or customers through customers' securities accounts in Clearstream, Luxembourg's or Euroclear's names on the books of their respective
depositaries.
Book-entry interests in the Notes and all transfers relating to the Notes will be reflected in the book-entry records of Clearstream, Luxembourg and Euroclear. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
distribution of the Notes will be cleared through Clearstream, Luxembourg and Euroclear. Any secondary market trading of book-entry interests in the Notes will take place through
Clearstream, Luxembourg and Euroclear participants and will settle in same-day funds. Owners of book-entry interests in the Notes will receive payments relating to their notes in euros. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clearstream,
Luxembourg and Euroclear have established electronic securities and payment transfer, processing, depositary and custodial links among themselves and others, either directly
or through custodians and depositaries. These links allow securities to be issued, held and transferred among the clearing systems without the physical transfer of certificates. Special procedures to
facilitate clearance and settlement have been established among these clearing systems to trade securities across borders in the secondary market. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
policies of Clearstream, Luxembourg and Euroclear will govern payments, transfers, exchange and other matters relating to the investor's interest in securities held by them. We have
no responsibility for any aspect of the records kept by Clearstream, Luxembourg or Euroclear or any of their direct or indirect participants. We also do not supervise these systems in any way. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clearstream,
Luxembourg and Euroclear and their participants perform these clearance and settlement functions under agreements they have made with one another or with their customers.
You should be aware that they are not obligated to perform or continue to perform these procedures and may modify them or discontinue them at any time. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;So
long as Euroclear or Clearstream, Luxembourg their respective nominees or their common depositary is the registered owner of the global securities representing the Notes, Euroclear or
Clearstream, Luxembourg or such nominee, as the case may be, will be considered the sole owners and holders of the Notes for all purposes of the Notes and the indenture. Except as provided below,
owners of beneficial interests in the Notes will not be entitled to have the Notes registered in their names, will not receive or be entitled to receive physical delivery of the Notes in definitive
form and will not be considered the owners or holders of the Notes under the indenture, including for purposes of receiving any reports delivered by us, Aon Delaware or the trustee pursuant to the
indenture. Accordingly, each person owning a beneficial interest in a Note must rely on the procedures of the clearing systems and, if such person is not a participant of the clearing systems, on the
procedures of the participant through which such person owns its interest, in order to exercise any rights of a holder of Notes. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-37</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
and until Aon&nbsp;plc issues the Notes in fully certificated, registered form under the limited circumstances described below under the heading "&#151;Certificated
Notes":</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>you will not be entitled to receive a certificate representing your interest in the Notes; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>all references in this prospectus or an accompanying prospectus supplement to actions by holders will refer to actions
taken by Euroclear or Clearstream, Luxembourg, as applicable, upon instructions from its direct participants; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>all references in this prospectus or an accompanying prospectus supplement to payments and notices to holders will refer
to payments and notices to Euroclear or Clearstream, Luxembourg or their respective nominees, as the registered holders of the Notes, for distribution to you in accordance with their respective
procedures. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2><B> Clearing Systems  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> Clearstream, Luxembourg  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clearstream, Luxembourg advises that it is incorporated under the laws of Luxembourg as a professional depositary. Clearstream,
Luxembourg holds securities for its customers and facilitates the clearance and settlement of securities transactions between its customers through electronic book-entry changes in accounts of its
customers, thus eliminating the need for physical movement of certificates. Clearstream, Luxembourg provides to its customers, among other things, services for safekeeping, administration, clearance
and settlement of internationally traded securities and securities lending and borrowing. Clearstream, Luxembourg interfaces with domestic markets in a number of countries. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clearstream,
Luxembourg customers are recognized financial institutions around the world, including underwriters, securities brokers and dealers, banks, trust companies, clearing
corporations and certain other organizations. Indirect access to Clearstream, Luxembourg is also available to others, such as banks, brokers, dealers and trust companies that clear through, or
maintain a custodial relationship with, a Clearstream, Luxembourg customer either directly or indirectly. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B><I> The Euroclear System  </I></B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Euroclear has advised us that the Euroclear System was created in 1968 to hold securities for participants in the Euroclear System and
to clear and settle transactions between Euroclear participants through simultaneous electronic book-entry delivery against payment, thus eliminating the need for physical movement of certificates and
risk from lack of simultaneous transfers of securities and cash. Transactions may now be settled in many currencies, including United States dollars. The Euroclear System provides various other
services, including securities lending and borrowing and interfaces with domestic markets in several countries. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Euroclear System is operated by Euroclear Bank&nbsp;S.A./N.V. (the "Euroclear Operator"), under contract with Euroclear Clearance System, S.C., a Belgian cooperative corporation.
The Euroclear Operator conducts all operations, and all Euroclear securities clearance accounts and Euroclear cash accounts are accounts with the Euroclear Operator, not the cooperative. The
cooperative establishes policy for the Euroclear System on behalf of Euroclear participants. Euroclear participants include banks (including central banks), securities brokers and dealers and other
professional financial intermediaries and may include the underwriters. Indirect access to the Euroclear System is also available to other firms that clear through or maintain a custodial relationship
with a Euroclear participant, either directly or indirectly. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-38</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Terms and Conditions Governing Use of Euroclear and the related Operating Procedures of the Euroclear System and applicable Belgian law govern securities clearance accounts and cash
accounts with the Euroclear Operator. Specifically, these terms and conditions govern:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>transfers of securities and cash within the Euroclear System; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>withdrawal of securities and cash from the Euroclear System; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>receipts of payments with respect to securities in the Euroclear System. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All
securities in the Euroclear System are held on a fungible basis without attribution of specific certificates to specific securities clearance accounts. The Euroclear Operator acts
under the terms and conditions only on behalf of Euroclear participants and has no record of or relationship with persons holding securities through Euroclear participants. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Euroclear
further advises that investors that acquire, hold and transfer interests in the Notes by book-entry through accounts with the Euroclear Operator or any other securities
intermediary are subject to the laws and contractual provisions governing their relationship with their intermediary, as well as the laws and contractual provisions governing the relationship between
such an intermediary and each other intermediary, if any, standing between themselves and the Notes. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Euroclear Operator advises that under Belgian law, investors that are credited with securities on the records of the Euroclear Operator have a co-property right in the fungible pool
of interests in securities on deposit with the Euroclear Operator in an amount equal to the amount of interests in securities credited to their accounts. In the event of the insolvency of the
Euroclear Operator, Euroclear participants would have a right under Belgian law to the return of the amount and type of interests in securities credited to their accounts with the Euroclear Operator.
If the Euroclear Operator did not have a sufficient amount of interests in securities on deposit of a particular type to cover the claims of all Euroclear participants credited with such interests in
securities on the Euroclear Operator's records, all Euroclear participants having an amount of interests in securities of such type credited to their accounts with the Euroclear Operator would have
the right under Belgian law to the return of their pro rata share of the amount of interest in securities actually on deposit. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under
Belgian law, the Euroclear Operator is required to pass on the benefits of ownership in any interests in securities on deposit with it, such as dividends, voting rights and other
entitlements, to any person credited with such interests in securities on its records. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Clearstream and Settlement Procedures  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Investors holding their notes through Clearstream, Luxembourg or Euroclear accounts will follow the settlement procedures that are
applicable to conventional eurobonds in registered form. Notes will be credited to the securities custody accounts of Clearstream, Luxembourg and Euroclear participants on the business day following
the settlement date, for value on the settlement date. They will be credited either free of payment or against payment for value on the settlement date. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Secondary
market trading between Clearstream, Luxembourg and/or Euroclear participants will be conducted in accordance with the normal rules and operating procedures of Clearstream,
Luxembourg and Euroclear. Secondary market trading will be settled using procedures applicable to conventional eurobonds in registered form. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You
should be aware that investors will only be able to make and receive deliveries, payments and other communications involving the Notes through Clearstream, Luxembourg and Euroclear
on days when those systems are open for business. Those systems may not be open for business on days when banks, brokers and other institutions are open for business in the United States. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-39</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
addition, because of time-zone differences, there may be problems with completing transactions involving Clearstream, Luxembourg and Euroclear on the same business day as in the
United States. U.S. investors who wish to transfer their interests in the Notes, or to make or receive a payment or delivery of the Notes, on a particular day, may find that the transactions will not
be performed until the next business day in Luxembourg or Brussels, depending on whether Clearstream, Luxembourg or Euroclear is used. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clearstream,
Luxembourg or Euroclear will credit payments to the cash accounts of Clearstream, Luxembourg customers or Euroclear participants in accordance with the relevant system's
rules and procedures, to the extent received by its depositary. Clearstream, Luxembourg or the Euroclear Operator, as the case may be, will take any other action permitted to be taken by a holder
under the indenture on behalf of a Clearstream, Luxembourg customer or Euroclear participant only in accordance with its relevant rules and procedures. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clearstream,
Luxembourg and Euroclear have agreed to the foregoing procedures in order to facilitate transfers of the Notes among participants of Clearstream, Luxembourg and Euroclear.
However, they are under no obligation to perform or continue to perform those procedures, and they may discontinue those procedures at any time. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Certificated Notes  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless and until they are exchanged, in whole or in part, for Notes in definitive form in accordance with the terms of the Notes, the
Notes may not be transferred except (1)&nbsp;as a whole by the applicable depositary to its nominee or (2)&nbsp;by a nominee of the applicable depositary to another such nominee of the depositary
or (3)&nbsp;by the applicable depositary or any such nominee to a successor of such depositary or a nominee of such successor. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc
will issue Notes to you or your nominees, in fully certificated registered form, rather than to a depositary or its nominees, only
if:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>we or Aon Delaware advise the trustee in writing that the common depositary is no longer willing or able to discharge its
responsibilities properly or that Clearstream, Luxembourg or Euroclear ceases to be a registered clearing agency under the Exchange Act, and the trustee or we are unable to locate a qualified
successor within 90&nbsp;days; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>an event of default has occurred and is continuing under the indenture; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>we or Aon Delaware, at our option, elect to terminate the book-entry system through the depositaries. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
and until Aon&nbsp;plc issues the Notes in fully certificated, registered form, (1)&nbsp;you will not be entitled to receive a certificate representing your interest in the
Notes; (2)&nbsp;all references in this prospectus supplement or the accompanying prospectus to actions by holders will refer to actions taken by the applicable depositary upon instructions from
their direct participants; and (3)&nbsp;all references in this prospectus supplement or the accompanying prospectus to payments and notices to holders will
refer to payments and notices to the applicable depositary, as the registered holder of the Notes, for distribution to you in accordance with its respective policies and procedures. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-40</FONT></P>

<HR NOSHADE>
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</FONT> <FONT SIZE=2>
<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="under"></A>UNDERWRITING  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under the terms and subject to the conditions contained in an underwriting agreement dated the date of this prospectus supplement,
Aon&nbsp;plc and Aon Delaware have agreed to sell to the underwriters named below, for whom Credit Suisse Securities (Europe) Limited, Barclays Bank PLC and Deutsche Bank AG, London Branch are
acting as representatives, the following respective principal amounts of the Securities. </FONT></P>
 <DIV style="padding:0pt;position:relative;width:70%;margin-left:15%;">
<p style="font-family:times;"></FONT></P>

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 </B></FONT></DIV></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Principal Amount of<BR>
the Notes </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Credit Suisse Securities (Europe) Limited</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&euro;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Barclays Bank&nbsp;PLC</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Deutsche Bank AG, London Branch</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:20pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2><BR>&euro;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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 <P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
underwriting agreement provides that the underwriters are obligated to purchase all of the Securities if any are purchased. The underwriting agreement also provides that if an
underwriter defaults with respect to the Securities the purchase commitments of non-defaulting underwriters may be increased or the offering of the Securities may be terminated. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
underwriters propose to offer the Securities initially at the public offering price on the cover page of this prospectus supplement. After the initial public offering the
representatives may change the public offering price and any other selling terms. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
estimate that our out of pocket expenses for this offering will be approximately $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
following table shows the underwriting discounts and commissions that we will pay to the underwriters in connection with this offering of Securities (expressed as a percentage of the
principal amount of the Securities): </FONT></P>
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<p style="font-family:times;"></FONT></P>

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<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Paid by Us </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Per&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% Senior Note</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>%</FONT></TD>
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<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:20pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&euro;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
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 <P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Securities are a new issue of securities with no established trading market. One or more of the underwriters intend to make a secondary market for the Securities. However, they are
not obligated to do so and may discontinue making a secondary market for the Securities at any time without notice. No assurance can be given as to how liquid the trading market for the Securities
will be. We intend to apply to list the Securities on the New York Stock Exchange or another "recognised stock exchange" for purposes of Section&nbsp;1005 of the U.K. Income Tax Act 2007. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
expect to deliver the Securities against payment for the Securities on or about the date specified in the last paragraph of the cover page of this prospectus supplement, which will be
the fifth business day following the date of the pricing of the Securities. Under Rule&nbsp;15c6-1 of the Exchange Act, trades in the secondary market generally are required to settle in three
business days, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade Securities on the date of pricing or the next succeeding business day will be
required, by virtue of the fact that the Securities initially will settle in T+5, to specify an alternate settlement arrangement to prevent a failed settlement. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To
the extent any underwriter that is not a U.S. registered broker-dealer intends to effect sales of Securities in the United States, it will do so through one or more U.S. registered
broker-dealers in accordance with the applicable U.S. securities laws and regulations. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-41</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
have agreed to indemnify the several underwriters against liabilities under the Securities Act, or contribute to payments which the underwriters may be required to make in that
respect. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
connection with the offering, the underwriters may engage in stabilizing transactions, over-allotment transactions, syndicate covering transactions and penalty bids in accordance with
Regulation&nbsp;M under the Exchange Act. </FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Stabilizing transactions permit bids to purchase the underlying security so long as the stabilizing bids do not exceed a
specified maximum. </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Over-allotment involves sales by the underwriters of Securities in excess of the principal amount of the Securities the
underwriters are obligated to purchase, which creates a syndicate short position. </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Syndicate covering transactions involve purchases of the Securities in the open market after the distribution has been
completed in order to cover syndicate short positions. A short position is more likely to be created if the underwriters are concerned that there may be downward pressure on the price of the
Securities in the open market after pricing that could adversely affect investors who purchase in the offering. </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Penalty bids permit the representatives to reclaim a selling concession from a syndicate member when the Securities
originally sold by the syndicate member are purchased in a stabilizing transaction or a syndicate covering transaction to cover syndicate short positions. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;These
stabilizing transactions, syndicate covering transactions and penalty bids may have the effect of raising or maintaining the market price of the Securities or preventing or
retarding a decline in the market price of the Securities. As a result the price of the Securities may be higher than the price that might otherwise exist in the open market. These transactions, if
commenced, may be discontinued at any time. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Other Relationships  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The underwriters and their respective affiliates are full service financial institutions engaged in various activities, which may
include securities trading, commercial and investment banking, financial advisory, investment management, investment research, principal investment, hedging, financing and brokerage activities. From
time to time in the ordinary course of their respective businesses, certain of the underwriters and their affiliates have engaged in and may in the future engage in commercial banking, derivatives
and/or financial advisory, investment banking and other commercial transactions and services with us and our affiliates for which they have received or will receive customary fees and commissions. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
addition, in the ordinary course of their business activities, the underwriters and their affiliates may make or hold a broad array of investments and actively trade debt and equity
securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers. Certain of the underwriters or their
affiliates that have a lending relationship with us routinely hedge, and certain other of those underwriters may hedge, their credit exposure to us consistent with their customary risk management
policies. Typically, these underwriters and their affiliates would hedge such exposure by entering into transactions which consist of either the purchase of credit default swaps or the creation of
short positions in our securities, including potentially the Notes offered hereby. Any such credit default swaps or short positions could adversely affect future trading prices of the Notes offered
hereby. Such investments and securities activities may involve securities and/or instruments of ours or our affiliates. The underwriters and their affiliates may also make investment recommendations
and/or publish or express independent research views in respect of such securities or financial instruments and may hold, or recommend to clients that they acquire, long and/or short positions in such
securities and instruments. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-42</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Securities are being offered for sale in the United States and in jurisdictions outside the United States, subject to applicable law. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> European Economic Area  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus supplement and the accompanying prospectus are not prospectuses for the purposes of the Prospectus Directive as
implemented in member states of the
European Economic Area. This prospectus supplement and the accompanying prospectus have been prepared on the basis that all offers of the Securities will be made pursuant to an exemption under the
Prospectus Directive from the requirement to produce a prospectus in connection with offers of the Securities. Accordingly, any person making or intending to make any offer within the European
Economic Area of the Securities which are the subject of the offering contemplated by this prospectus supplement and the accompanying prospectus should only do so in circumstances in which no
obligation arises for us, Aon Delaware or any underwriter to produce a prospectus for such offers. None of we, Aon Delaware or the underwriters have authorized, nor do we or they authorize, the making
of any offer of the Securities through any financial intermediary, other than offers made by underwriters or their affiliates which constitute the final placement of the Securities contemplated by
this prospectus supplement and the accompanying prospectus. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
relation to each Member State of the European Economic Area which has implemented the Prospectus Directive (each, a "Relevant Member State"), each underwriter has represented and
agreed that with effect from and including the date on which the Prospectus Directive is implemented in that Relevant Member State (the "Relevant Implementation Date") it has not made and will not
make an offer of Securities which are the subject of the offering contemplated by this prospectus supplement to the public in that Relevant Member State other than: </FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(a)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>to
any legal entity which is a qualified investor as defined in the Prospectus Directive;
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(b)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>to
fewer than 100 or, if the Relevant Member State has implemented the relevant provision of the 2010 PD Amending Directive, 150, natural or legal persons
(other than qualified investors as defined in the Prospectus Directive), as permitted under the Prospectus Directive, subject to obtaining the prior consent of the underwriters for any such offer; or
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(c)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>in
any other circumstances falling within Article&nbsp;3(2) of the Prospectus Directive, </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2><I>provided</I></FONT><FONT SIZE=2> that no such offer of Securities shall require us, Aon Delaware or any underwriter to publish a prospectus pursuant to Article&nbsp;3 of the
Prospectus Directive or supplement a prospectus pursuant to Article&nbsp;16 of the Prospectus Directive. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For
the purposes of this provision, the expression an "offer of Securities to the public" in relation to any Securities in any Relevant Member State means the communication in any form
and by any means of sufficient information on the terms of the offer and the Securities to be offered so as to enable an
investor to decide to purchase or subscribe for the Securities, as the same may be varied in that Member State by any measure implementing the Prospectus Directive in that Member State, the expression
"Prospectus Directive" means Directive&nbsp;2003/71/EC (and amendments thereto, including the 2010 PD Amending Directive, to the extent implemented in the Relevant Member State), and includes any
relevant implementing measure in the Relevant Member State and the expression "2010 PD Amending Directive" means Directive&nbsp;2010/73/EU. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> United Kingdom  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each underwriter has represented and agreed that: </FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(a)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>it
has only communicated or caused to be communicated and will only communicate or cause to be communicated an invitation or inducement to engage in
investment activity (within the </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-43</FONT></P>

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<UL>
<UL>

<P style="font-family:times;"><FONT SIZE=2>meaning
of Section&nbsp;21 of the Financial Services and Markets Act 2000 (the "FSMA")) received by it in connection with the issue or sale of the Securities in circumstances in which
Section&nbsp;21(1) of the FSMA does not apply to the Issuer; and  </FONT></P>

</UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(b)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>it
has complied and will comply with all applicable provisions of the FSMA with respect to anything done by it in relation to the Securities in, from or
otherwise involving the United Kingdom. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2><B> Hong Kong  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus supplement and accompanying prospectus have not been approved by or registered with the Securities and Futures
Commission of Hong Kong or the Registrar of Companies of Hong Kong. The Securities may not be offered or sold by means of any document other than (i)&nbsp;in circumstances which do not constitute an
offer to the public within the meaning of the Companies Ordinance (Cap.&nbsp;32, Laws of Hong Kong), (ii)&nbsp;to "professional investors" within the meaning of the Securities and Futures
Ordinance (Cap.&nbsp;571, Laws of Hong Kong) and any rules made thereunder or (iii)&nbsp;in other circumstances which do not result in the document being a "prospectus" within the meaning of the
Companies Ordinance (Cap.&nbsp;32, Laws of Hong Kong), and no advertisement, invitation or document relating to the Securities may be issued or may be in the possession of any person for the purpose
of issue (in each case whether in Hong Kong or elsewhere), which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so
under the laws of Hong Kong) other than with respect to Securities which are or are intended to be disposed of only to persons outside Hong Kong or only to "professional investors" within the meaning
of the Securities and Futures Ordinance (Cap.&nbsp;571, Laws of Hong Kong) and any rules made thereunder. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Japan  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Securities have not been and will not be registered under the Financial Instruments and Exchange Law of Japan (Law No.&nbsp;25 of
1948, as amended) and, accordingly, will not be offered or sold, directly or indirectly, in Japan, or for the benefit of any Japanese Person or to others for re-offering or resale, directly or
indirectly, in Japan or to any Japanese Person, except in compliance with all applicable laws, regulations and ministerial guidelines promulgated by relevant Japanese governmental or regulatory
authorities in effect at the relevant time. For the purposes of this paragraph, "Japanese Person" shall mean any person resident in Japan, including any corporation or other entity organized under the
laws of Japan. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Singapore  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus has not been registered as a prospectus with the Monetary Authority of Singapore. Accordingly, this prospectus and any
other document or material in connection with the offer or sale, or invitation for subscription or purchase, of the Securities may not be circulated or distributed, nor may the Securities be offered
or sold, or be made the subject of an invitation for subscription or purchase, whether directly or indirectly, to persons in Singapore other than (i)&nbsp;to an institutional investor under
Section&nbsp;274 of the Securities and Futures Act (Chapter&nbsp;289)
(the "SFA"), (ii)&nbsp;to a relevant person, or any person pursuant to Section&nbsp;275(1A), and in accordance with the conditions, specified in Section&nbsp;275 of the SFA or
(iii)&nbsp;otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the SFA. Where the Securities are subscribed or purchased under Section&nbsp;275 by a
relevant person which is: (a)&nbsp;a corporation (which is not an accredited investor) the sole business of which is to hold investments and the entire share capital of which is owned by one or more
individuals, each of whom is an accredited investor; or (b)&nbsp;a trust (where the trustee is not an accredited investor) whose sole purpose is to hold investments and each beneficiary is an
accredited investor, then securities, debentures and units of securities and debentures </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-44</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>of
that corporation or the beneficiaries' rights and interest in that trust shall not be transferable for 6&nbsp;months after that corporation or that trust has acquired the Securities under
Section&nbsp;275 except: (i)&nbsp;to an institutional investor under Section&nbsp;274 of the SFA or to a relevant person, or any person pursuant to Section&nbsp;275(1A), and in accordance with
the conditions, specified in Section&nbsp;275 of the SFA; (ii)&nbsp;where no consideration is given for the transfer; or (iii)&nbsp;by operation of law. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-45</FONT></P>

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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="incorp"></A>INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The SEC allows us to "incorporate by reference" into this prospectus supplement the information we file with the SEC, which means that
we can disclose important information to you by referring you to those documents. Any information incorporated this way is considered to be part of this prospectus supplement, and any information that
we file later with the SEC will automatically update and supersede this information. SEC rules and regulations also allow us to "furnish" rather than "file" certain reports and information with the
SEC. Any such reports or information which we have indicated as being "furnished" shall not be deemed to be incorporated by reference in or otherwise become a part of this prospectus, regardless of
when furnished to the SEC. We incorporate by reference the following documents that we have filed with the SEC and any future filings that we make with the SEC under Sections&nbsp;13(a), 13(c), 14
or 15(d) of the Securities Exchange Act of 1934, as amended, which we refer to as the "Exchange Act" (other than information furnished rather than
filed):</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2013 filed with the SEC on February&nbsp;18,
2014; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Quarterly Report on Form&nbsp;10-Q for the quarter ended March&nbsp;31, 2014 filed with the SEC on April&nbsp;28,
2014; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Definitive Proxy Statement on Schedule&nbsp;14A filed on April&nbsp;28, 2014 (to the extent incorporated by reference
in our Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2013). </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You
may request a copy of any filing referred to above (including any exhibits that are specifically incorporated by reference), at no cost, by contacting Aon at the following address or
telephone number: </FONT></P>
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<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Aon&nbsp;plc<BR>
8 Devonshire Square<BR>
London, England EC2M&nbsp;4PL<BR>
Attention: Company Secretary<BR>
Telephone: +44 20 7623 5500</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:times;"><p align=center style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Aon Corporation<BR>
200 E. Randolph Street<BR>
Chicago, IL 60601<BR>
Attention: Company Secretary<BR>
Telephone: (312)&nbsp;381-1000<BR></FONT>
</TD>
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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="legal"></A>LEGAL MATTERS  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The validity of the Securities will be passed upon for us as to U.S. law by Latham&nbsp;&amp; Watkins&nbsp;LLP, New York, New York.
Davis Polk&nbsp;&amp; Wardwell&nbsp;LLP, New York, New York, will pass upon certain matters for the underwriters. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B> <A NAME="expert"></A>EXPERTS  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The consolidated financial statements of Aon&nbsp;plc appearing in Aon&nbsp;plc's Annual Report (Form&nbsp;10-K) for the year
ended December&nbsp;31, 2013, and the effectiveness of Aon&nbsp;plc's internal control over financial reporting as of December&nbsp;31, 2013, have been audited by Ernst&nbsp;&amp;
Young&nbsp;LLP, independent registered public accounting firm, as set forth in their reports thereon, included therein, and incorporated herein by reference. Such consolidated financial statements
and Aon&nbsp;plc management's assessment of the effectiveness of internal control over financial reporting as of December&nbsp;31, 2013 are incorporated herein by reference in reliance upon such
reports given on the authority of such firm as experts in accounting and auditing. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>S-47</FONT></P>

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</FONT> <FONT SIZE=2><B>PROSPECTUS  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B>
<IMG SRC="g408983.jpg" ALT="LOGO" WIDTH="94" HEIGHT="40">
  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=5><B><I>Aon&nbsp;plc  </I></B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=4><B>Debt Securities<BR>
Guarantees<BR>
Preference Shares<BR>
Class&nbsp;A Ordinary Shares<BR>
Convertible Securities<BR>
Share Purchase Contracts<BR>
Share Purchase Units  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=4><I>

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<BR>  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=5><B><I>Aon Corporation  </I></B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=4><B>Debt Securities<BR>
Guarantees  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We may from time to time offer and sell any of our securities listed above, in each case, in one or more series. Our subsidiary, Aon Corporation,
which we refer to as "Aon Delaware," also may from time to time offer and sell its debt securities in one or more series. Aon Delaware may guarantee all payments of principal, interest (if any),
premium (if any), and other amounts due on any debt securities we issue. We may guarantee all payments of principal, interest (if any), premium (if any), and other amounts due on any debt securities
Aon Delaware issues. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
prospectus contains a general description of the securities that we or Aon Delaware may offer for sale. The specific terms of these securities will be contained in one or more
supplements to this prospectus. Prospectus supplements may also add to, update or change information contained in this prospectus. You should read this prospectus and each applicable prospectus
supplement, as well as the documents incorporated or deemed to be incorporated by reference in this prospectus and each applicable prospectus supplement, carefully before you invest. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=3><B>Investing in the securities described in this prospectus involves risk. You should carefully review the risks and uncertainties described under
the heading "Risk Factors" contained in this prospectus and any risk factors set forth in each applicable prospectus supplement and in the documents incorporated or deemed to be incorporated by
reference in this prospectus or any applicable prospectus supplement.  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our executive offices are located at 8 Devonshire Square, London, England, EC2M&nbsp;4PL, and our telephone number is +44 20 7623 5500. Aon
Delaware's executive offices are located at 200 East Randolph Street, Chicago, Illinois 60601, and Aon Delaware's telephone number is (312)&nbsp;381-1000. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
Class&nbsp;A Ordinary Shares are listed on the New York Stock Exchange under the symbol "AON." </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><I>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this
prospectus is truthful or complete. Any representation to the contrary is a criminal offense.</B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><I>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
or Aon Delaware may sell securities directly or to or through underwriters, dealers or agents on a delayed or continuous basis. For additional information on the method of sale, you
should refer to "Plan of Distribution" in this prospectus. The names of any underwriters, dealers or agents involved in the sale of any securities and the specific manner in which securities may be
offered, including any applicable purchase price, fee, commission or discount arrangement between or among them, will be set forth in a prospectus supplement applicable to the sale of those
securities. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><I>

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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>The
date of this prospectus is August&nbsp;31, 2012. </FONT></P>

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<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>About this Prospectus</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>4</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Where You Can Find More Information</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>5</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Information Concerning Forward-Looking Statements</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>6</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Risk Factors</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>7</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The Company</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>8</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Use of Proceeds</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>9</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ratios</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>10</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of Debt Securities and Guarantees</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>11</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of Preference Shares</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>27</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of Class&nbsp;A Ordinary Shares</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>28</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of Share Purchase Contracts and Share Purchase Units</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>28</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Plan of Distribution</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>29</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Validity of Securities</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>31</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Experts</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>31</FONT></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
</TABLE></DIV>
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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da79802_about_this_prospectus"> </A>
<A NAME="toc_da79802_1"> </A>
<BR></FONT><FONT SIZE=2><B>  ABOUT THIS PROSPECTUS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus is part of an automatic shelf registration statement that we filed with the Securities and Exchange Commission, which
we refer to as the "SEC," as a "well-known seasoned issuer" as defined in Rule&nbsp;405 under the Securities Act of 1933, as amended, which we refer to as the "Securities Act." Under the automatic
shelf registration process, we may, over time, offer any combination of debt securities, guarantees, preference shares, Class&nbsp;A Ordinary Shares, convertible securities, share purchase contracts
and share purchase units described in this prospectus in one or more offerings; and our subsidiary, Aon Delaware, may, over time, offer any combination of debt securities and guarantees described in
this prospectus in one or more offerings. In this prospectus we refer to the debt securities, guarantees, preference shares, Class&nbsp;A Ordinary Shares, convertible securities, share purchase
contracts and share purchase units offered by us, and the debt securities and guarantees offered by Aon Delaware, collectively as the "securities." This prospectus provides you with a general
description of the securities we or Aon Delaware may offer. Each time we or Aon Delaware offer securities, we or Aon Delaware will provide you with one or more prospectus supplements that will contain
specific information about the terms of those securities. A prospectus supplement may also add to, update or change the information contained in this prospectus. Please carefully read this prospectus
and each applicable prospectus supplement, together with the documents incorporated or deemed to be incorporated by reference in this prospectus and the additional information described below under
the heading "Where You Can Find More Information." </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As
allowed by SEC rules, this prospectus does not contain all the information you can find in the registration statement of which this prospectus is a part or the exhibits to the
registration statement. For further information, we refer you to the registration statement of which this prospectus is a part, including its exhibits and schedules. Statements contained in this
prospectus about the provisions or contents of any contract, agreement or other document are not necessarily complete. For each of these contracts, agreements or documents filed as an exhibit to the
registration statement, we refer you to the actual exhibit for a more complete description of the matters involved. You should rely only on the information contained or incorporated or deemed to be
incorporated by reference in this prospectus
and each applicable prospectus supplement. We have not authorized anyone else to provide you with different information. If anyone provides you with different or inconsistent information, you should
not rely on it. You should not assume that the information contained or incorporated or deemed to be incorporated by reference in this prospectus or any applicable prospectus supplement is accurate as
of any date other than the date on the cover of the applicable document. Our, or Aon Delaware's, business, financial condition and results of operations may have changed since that date. Neither this
prospectus nor any prospectus supplement constitutes an offer to sell securities or a solicitation of an offer to buy securities by anyone in any jurisdiction in which that offer or solicitation is
not authorized, or in which the person is not qualified to do so or to any person to whom it is unlawful to make that offer or solicitation. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
prospectus is not intended to be and is not a prospectus for purposes of the E.U. Prospectus Directive and/or the U.K. Financial Services Authority's Prospectus Rules. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
this prospectus, we use the terms "Aon&nbsp;plc," "Aon," the "Company," "we," "us" and "our" and similar terms to refer to Aon&nbsp;plc and its subsidiaries, unless the context
otherwise requires and except as otherwise described below. We use the term "Aon Delaware" to refer to Aon Corporation, our wholly-owned subsidiary. On April&nbsp;2, 2012, we completed the
reorganization of the corporate structure of the group of companies controlled by Aon Delaware, Aon&nbsp;plc's predecessor as the ultimate holding company of the Aon group. In this prospectus, we
refer to this transaction as the "Redomestication." In the Redomestication, each issued and outstanding share of Aon Delaware common stock held by stockholders of Aon Delaware was converted into the
right to receive one Class&nbsp;A Ordinary Share, nominal value $0.01 per share, of Aon&nbsp;plc, subject to the receipt of cash for fractional shares. Any references in this prospectus to "Aon,"
the "Company," "we," "us" or "our" or any similar references relating to dates or periods before the Redomestication refer to Aon Delaware and its subsidiaries or, if the context so requires, Aon
Delaware alone. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>4</FONT></P>

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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da79802_where_you_can_find_more_information"> </A>
<A NAME="toc_da79802_2"> </A>
<BR></FONT><FONT SIZE=2><B>  WHERE YOU CAN FIND MORE INFORMATION    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We file annual, quarterly and current reports, proxy statements and other information with the SEC. You may read and copy any document
we file with the SEC at the SEC's public reference room facility at 100&nbsp;F Street, N.E., Room&nbsp;1580, Washington, D.C. 20549. You may obtain further information on the operation of the
public reference room by calling the SEC at 1&nbsp;800 SEC 0330. The SEC also maintains an Internet site at www.sec.gov that contains reports, proxy and information statements and other
information regarding issuers, including us, that file documents with
the SEC electronically through the SEC's electronic data gathering, analysis and retrieval system known as "EDGAR." In addition, you may inspect our SEC filings at the offices of the New York Stock
Exchange, 20 Broad Street, New York, New York 10005. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
make available free of charge most of our SEC filings through our Internet website (http://www.aon.com) as soon as reasonably practicable after we electronically file these materials
with the SEC. You may access these SEC filings on our website. You may also find additional information about Aon&nbsp;plc, Aon Delaware and our other subsidiaries on our website. The information
on, or accessible through, our web site is not a part of this prospectus. You may also request a copy of our SEC filings at no cost, by writing to or telephoning us at the following: </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B>Aon&nbsp;plc<BR>
8 Devonshire Square<BR>
London, England EC2M&nbsp;4PL<BR>
Attention: Company Secretary<BR>
Telephone: +44 20 7623 5500</B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
SEC allows us to "incorporate by reference" into this prospectus the information we file with the SEC, which means that we can disclose important information to you by referring you
to those documents. Any information incorporated this way is considered to be part of this prospectus, and any information that we file later with the SEC will automatically update and supersede this
information. SEC rules and regulations also allow us to "furnish" rather than "file" certain reports and information with the SEC. Any such reports or information which we have indicated as being
"furnished" shall not be deemed to be incorporated by reference in or otherwise become a part of this prospectus, regardless of when furnished to the SEC. We incorporate by reference the following
documents that, following the Redomestication, we have or, prior to the Redomestication, Aon Delaware had filed with the SEC and any future filings that we make with the SEC under
Sections&nbsp;13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended, which we refer to as the "Exchange Act," after the date of the initial filing of the registration
statement of which this prospectus is a part until we complete our sale of the securities to the public (other than information in those filings that is furnished, under applicable SEC rules, rather
than filed):</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2011 filed with the SEC on February&nbsp;24,
2012, except for Item&nbsp;8 therein to the extent superseded by the Current Report on Form&nbsp;8-K filed on August&nbsp;31, 2012; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Definitive Proxy Statement on Schedule&nbsp;14A filed with the SEC on April&nbsp;18, 2012; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Quarterly Report on Form&nbsp;10-Q for the quarters ended March&nbsp;31, 2012 filed with the SEC on May&nbsp;8, 2012
and June&nbsp;30, 2012 filed with the SEC on August&nbsp;8, 2012; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Current Reports on Form&nbsp;8-K dated January&nbsp;12, 2012, January&nbsp;19, 2012, January&nbsp;25, 2012,
February&nbsp;13, 2012, March&nbsp;12, 2012, March&nbsp;14, 2012, March&nbsp;15, 2012, March&nbsp;16, 2012, March&nbsp;26, 2012, March&nbsp;27, 2012, March&nbsp;29, 2012,
May&nbsp;18, 2012 and August&nbsp;31, 2012; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>The description of the Common Stock contained in Item&nbsp;12 of the Registration Statement on Form&nbsp;10 filed by
Aon Delaware with the SEC on February&nbsp;19, 1980 (when Aon Delaware was </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>5</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>known
as Combined International Corporation), and any amendment or report which Aon Delaware or Aon&nbsp;plc has filed (or Aon&nbsp;plc will file after the date of the initial filing of the
registration statement of which this prospectus is a part until it completes its sale of securities to the public) for the purpose of updating such description, including Aon&nbsp;plc's Current
Report on Form&nbsp;8-K dated April&nbsp;2, 2012. </FONT></P>

</UL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da79802_information_concerning_forward-looking_statements"> </A>
<A NAME="toc_da79802_3"> </A>
<BR></FONT><FONT SIZE=2><B>  INFORMATION CONCERNING FORWARD-LOOKING STATEMENTS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus, the prospectus supplements, the documents incorporated or deemed to be incorporated by reference in this prospectus or
any prospectus supplement and other written or oral statements made from time to time by us may contain certain statements related to future results, or state our intentions, beliefs and expectations
or predictions for the future which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements relate to expectations or
forecasts of future events. They use words such as "anticipate," "believe," "estimate," "expect," "forecast," "project," "intend," "plan" and "potential," and other similar terms, and future or
conditional tense verbs like "could," "may,"
"might," "should," "will" and "would." You can also identify forward-looking statements by the fact that they do not relate strictly to historical or current facts. For example, we may use
forward-looking statements when addressing topics such as: market and industry conditions, including competitive and pricing trends; changes in our business strategies and methods of generating
revenue; the development and performance of our services and products; changes in the composition or level of our revenues; our cost structure and the outcome of cost-saving or restructuring
initiatives; the outcome of contingencies; dividend policy; the expected impact of acquisitions and dispositions; pension obligations; cash flow and liquidity; future actions by regulators; and the
impact of changes in accounting rules. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from either historical or
anticipated results depending on a variety of factors. Potential factors that could impact results include:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>general economic conditions in different countries in which we do business around the world; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>changes in the competitive environment; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>changes in global equity and fixed income markets that could influence the return on invested assets; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>changes in the funding status of our various defined benefit pension plans and the impact of any increased pension funding
resulting from those changes; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>rating agency actions that could affect our ability to borrow funds; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>our ability to realize the anticipated benefits of the Redomestication and/or changes in tax laws; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>fluctuations in exchange and interest rates that could impact revenue and expense; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the impact of class actions, individual lawsuits and other contingent liabilities and loss contingencies arising from
errors and omissions and other claims against us, including client class actions, securities class actions, derivative actions and ERISA class actions; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the impact of any investigations brought by regulatory authorities in the U.S., the U.K. and other countries; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the cost of resolution of other contingent liabilities and loss contingencies, including potential liabilities arising
from errors and omission claims against us; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>failure to retain and attract qualified personnel; </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>6</FONT></P>

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<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the impact of, and potential challenges in complying with, legislation and regulation in the jurisdictions in which we
operate, particularly given the global scope of our business and the possibility of conflicting regulatory requirements across jurisdictions in which we do business; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the effect of the Redomestication on our operations and financial results, including the reaction of our clients,
employees and other constituents, compliance with applicable U.K. regulatory regimes or the failure to realize some or all of the anticipated benefits; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the extent to which we retain existing clients and attract new businesses and our ability to incentivize and retain key
employees; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the extent to which we manage certain risks created in connection with the various services, including fiduciary and
advisory services, among others, that we currently provide, or will provide in the future, to clients; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the possibility that the expected efficiencies and cost savings from the acquisition of Hewitt Associates,&nbsp;Inc.
("Hewitt") will not be realized, or will not be realized within the expected time period; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the risk that the Hewitt businesses will not be integrated successfully; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>our ability to implement restructuring initiatives and other initiatives intended to yield cost savings, and the ability
to achieve those cost savings; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the potential of a system or network disruption resulting in operational interruption or improper disclosure of personal
data; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>changes in commercial property and casualty markets and commercial premium rates that could impact revenues; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any inquiries relating to compliance with the U.S. Foreign Corrupt Practices Act and non-U.S. anti-corruption laws and
with U.S. and non-U.S. trade sanctions regimes; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>changes in costs or assumptions associated with our HR Solutions operating segment's outsourcing and consulting
arrangements that affect the profitability of these arrangements. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>Any
or all of our forward-looking statements may turn out to be inaccurate, and there are no guarantees about our performance. The factors identified above are not exhaustive. Aon and its subsidiaries
operate in a dynamic business environment in which new risks may emerge frequently. Accordingly, you should not place undue reliance on forward-looking statements, which speak only as of the dates on
which they are made. We are under no obligation (and expressly disclaim any obligation) to update or alter any forward-looking statement that we may make from time to time, whether as a result of new
information, future events or otherwise. Further information about factors that could materially affect Aon, including our results of operations and financial condition, is contained in the "Risk
Factors" section in Part&nbsp;I, Item&nbsp;1A of our Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2011 and in our most recently filed Quarterly Reports on
Form&nbsp;10-Q, and any amendments thereto. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da79802_risk_factors"> </A>
<A NAME="toc_da79802_4"> </A>
<BR></FONT><FONT SIZE=2><B>  RISK FACTORS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An investment in our securities involves significant risks. Before making an investment decision, you should carefully consider the
risks and other information we include or incorporate by reference in this prospectus or an applicable prospectus supplement. In particular, you should consider the risk factors set forth in any
applicable prospectus supplement and in our most recent Annual Report on Form&nbsp;10-K filed with the SEC, as those risk factors may be amended or supplemented by subsequent Quarterly Reports on
Form&nbsp;10-Q or otherwise. The risks and uncertainties we have described are not the only ones facing us. Additional risks and uncertainties not known to us or that we deem immaterial may also
affect our business operations. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>7</FONT></P>

<HR NOSHADE>
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<A NAME="page_da79802_1_8"> </A>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da79802_the_company"> </A>
<A NAME="toc_da79802_5"> </A>
<BR></FONT><FONT SIZE=2><B>  THE COMPANY    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We are a preeminent professional service firm, focused on the topics of risk and people. We are the leading global provider of risk
management services, insurance and reinsurance brokerage, and human resource consulting and outsourcing, delivering distinctive client value via innovative and effective risk management and workforce
productivity solutions. We serve clients through two operating segments, Risk Solutions and HR Solutions. Risk Solutions acts as an advisor and insurance and reinsurance broker, helping clients manage
their risks via consultation, as well as negotiation and placement of insurance risk with insurance carriers through our global distribution network. HR Solutions partners with organizations to solve
their most complex benefits, talent and related financial challenges, and improve business performance by designing, implementing, communicating and administering a wide range of human capital,
retirement, investment management, health care, compensation and talent management strategies. As of December&nbsp;31, 2011, we had approximately 62,000 employees and conducted our operations
through various subsidiaries in more than 120 countries and sovereignties. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon
Delaware is a wholly-owned Delaware subsidiary of Aon Holdings&nbsp;LLC, which is a wholly-owned direct subsidiary of Aon&nbsp;plc. Prior to the Redomestication, Aon Delaware was
the ultimate holding company for the Aon group. See "About this Prospectus" and "Where You Can Find More Information" in this prospectus. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>8</FONT></P>

<HR NOSHADE>
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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da79802_use_of_proceeds"> </A>
<A NAME="toc_da79802_6"> </A>
<BR></FONT><FONT SIZE=2><B>  USE OF PROCEEDS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless we state otherwise in an applicable prospectus supplement, we expect to use the net proceeds from the sale of the securities
described in this prospectus and an applicable prospectus supplement for general corporate purposes, including securities repurchase programs, capital expenditures, working capital, repayment or
reduction of long term and short term debt and the financing of acquisitions. We may invest funds that we do not immediately require in short term marketable securities. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>9</FONT></P>

<HR NOSHADE>
<P style='font-family:times;page-break-before:always'></p>
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<A NAME="page_da79802_1_10"> </A>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da79802_ratios"> </A>
<A NAME="toc_da79802_7"> </A>
<BR></FONT><FONT SIZE=2><B>  RATIOS    <BR>    </B></FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our ratios of earnings to fixed charges and of earnings to combined fixed charges and preference share dividends for each of the
periods indicated are as follows: </FONT></P>
 <DIV style="padding:0pt;position:relative;width:70%;margin-left:15%;">
<p style="font-family:times;"></FONT></P>

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<TR><!-- TABLE COLUMN WIDTHS SET -->
<TD WIDTH="" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
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<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=5 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Six<BR>
Months<BR>
Ended<BR>
June&nbsp;30, </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=14 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Year Ended December&nbsp;31, </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2012 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2011 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2011 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2010 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2009 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2008 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2007 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ratio of earnings to fixed charges</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>6.0</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>5.6</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>5.6</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>5.6</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>6.5</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>6.1</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2>5.7</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:times;"><p style="font-family:times;margin-top:12pt;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ratio of earnings to combined fixed charges and preference share dividends</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
6.0</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
5.6</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
5.6</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
5.6</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
6.5</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
6.1</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><FONT SIZE=2><BR>
5.7</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
</TABLE></DIV>
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 </DIV>
 <P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For
these ratios, earnings consist of income from continuing operations before provision for income taxes and noncontrolling interest, less the earnings from unconsolidated entities
under the equity method of accounting, and fixed charges. Fixed charges include interest expense and that portion of rental expense we deem to represent interest. Combined fixed charges and preferred
stock dividends include preference share dividend requirements, interest expense and that portion of rental expense we deem to represent interest. Preference share dividends consist of the pre tax
earnings required to pay dividends on all preference shares. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>10</FONT></P>

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</FONT></P>

<!-- TOC_END -->
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="dc79802_description_of_debt_securities_and_guarantees"> </A>
<A NAME="toc_dc79802_1"> </A>
<BR></FONT><FONT SIZE=2><B>  DESCRIPTION OF DEBT SECURITIES AND GUARANTEES    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In this description, references to "Aon," the "company," "we," "us" or "our" refer only to Aon&nbsp;plc and not to any of our
subsidiaries or affiliates, including Aon Delaware. Also, in this section, references to "holders" mean those who own debt securities and the related guarantees registered in their own names, on the
books that the appropriate registrar for Aon&nbsp;plc or Aon Delaware, as the case may be, maintains for this purpose, and not those who own beneficial interests in debt securities and the related
guarantees registered in "street name" or in debt securities and the related guarantees issued in book-entry form and held through one or more depositaries. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
prospectus describes certain general terms and provisions of the debt securities that we may offer (the "Aon&nbsp;plc debt securities") and that Aon Delaware may offer (the "Aon
Delaware debt securities") pursuant to this prospectus. When we or Aon Delaware offer to sell a particular series of debt securities, we or Aon Delaware will describe the specific terms of the series
in one or more prospectus supplements. We or Aon Delaware will also indicate in an applicable prospectus supplement the extent to which the general terms and provisions described in this prospectus
apply to a particular series of debt securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc
may issue Aon&nbsp;plc debt securities under either (1)&nbsp;a senior indenture (the "Aon&nbsp;plc senior indenture") among Aon&nbsp;plc, as issuer; Aon Delaware,
as guarantor (the "Aon&nbsp;plc senior debt guarantor") in respect of certain series of Aon&nbsp;plc senior debt securities (as defined below); and The Bank of New York Mellon Trust Company, N.A.,
as trustee (the "Aon&nbsp;plc senior debt trustee"), or (2)&nbsp;a subordinated indenture (the "Aon&nbsp;plc subordinated indenture") among Aon&nbsp;plc, as issuer; Aon Delaware, as guarantor
(the "Aon&nbsp;plc subordinated debt guarantor" and, together with the Aon&nbsp;plc senior debt guarantor, the "Aon&nbsp;plc guarantor") in respect of certain series of Aon&nbsp;plc
subordinated debt securities (as defined below); and The Bank of New York Mellon Trust Company, N.A., as trustee (the "Aon&nbsp;plc subordinated debt trustee" and, together with the Aon&nbsp;plc
senior debt trustee, the "Aon&nbsp;plc trustee"). Any Aon&nbsp;plc
debt securities that we issue under the Aon&nbsp;plc senior indenture will constitute unsubordinated debt of Aon&nbsp;plc ("Aon&nbsp;plc senior debt securities") and will rank senior to any
Aon&nbsp;plc debt securities that Aon&nbsp;plc issues under the Aon&nbsp;plc subordinated indenture ("Aon&nbsp;plc subordinated debt securities"). Any guarantee that Aon Delaware, as the
Aon&nbsp;plc senior debt guarantor, issues under the Aon&nbsp;plc senior indenture will constitute an unsubordinated obligation of Aon Delaware (each, an "Aon&nbsp;plc senior debt guarantee")
and will rank senior to any guarantee that Aon Delaware, as the Aon&nbsp;plc subordinated debt guarantor, issues under the Aon&nbsp;plc subordinated indenture (each, an "Aon&nbsp;plc
subordinated debt guarantee" and, together with the Aon&nbsp;plc senior debt guarantees, the "Aon&nbsp;plc debt guarantees"). </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon
Delaware may issue Aon Delaware debt securities under either (1)&nbsp;a senior indenture (the "Aon Delaware senior indenture") among Aon Delaware, as issuer; Aon&nbsp;plc, as
guarantor (the "Aon Delaware senior debt guarantor") in respect of certain series of Aon Delaware&nbsp;plc senior debt securities (as defined below); and The Bank of New York Mellon Trust Company,
N.A., as trustee (the "Aon Delaware senior debt trustee"), or (2)&nbsp;a subordinated indenture (the "Aon Delaware subordinated indenture") among Aon Delaware, as issuer; Aon&nbsp;plc, as
guarantor (the "Aon Delaware subordinated debt guarantor" and, together with the Aon Delaware senior debt guarantor, the "Aon Delaware guarantor") in respect of certain series of Aon&nbsp;plc
Delaware subordinated debt securities (as defined below); and The Bank of New York Mellon Trust Company, N.A., as trustee (the "Aon Delaware subordinated debt trustee" and, together with the Aon
Delaware senior debt trustee, the "Aon Delaware trustee"). Any Aon Delaware debt securities that Aon Delaware issues under the Aon Delaware senior indenture will constitute unsubordinated debt of Aon
Delaware ("Aon Delaware senior debt securities") and will rank senior to any Aon Delaware debt securities that Aon Delaware issues under the Aon Delaware subordinated indenture ("Aon Delaware
subordinated debt securities"). Any guarantee that Aon&nbsp;plc, as the Aon Delaware senior debt guarantor, issues under the Aon Delaware senior indenture will constitute an unsubordinated
obligation of Aon&nbsp;plc (each, an "Aon Delaware </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>11</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>senior
debt guarantee") and will rank senior to any guarantee that Aon&nbsp;plc, as the Aon Delaware subordinated debt guarantor, issues under the Aon Delaware subordinated indenture (each, an "Aon
Delaware subordinated debt guarantee" and, together with the Aon Delaware senior debt guarantees, the "Aon Delaware debt guarantees"). </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
this description, the Aon&nbsp;plc debt securities and the Aon Delaware debt securities are sometimes referred to together as the "debt securities," the Aon&nbsp;plc senior debt
securities and the Aon Delaware senior debt securities are sometimes referred to together as the "senior debt securities," the Aon&nbsp;plc subordinated debt securities and the Aon Delaware
subordinated debt securities are sometimes referred together as the "subordinated debt securities," the Aon&nbsp;plc senior indenture and the Aon Delaware senior indenture are sometimes referred to
together as the "senior indentures," the Aon&nbsp;plc subordinated indenture and the Aon Delaware subordinated indenture are sometimes referred to together as the "subordinated indentures," the
senior indentures and the subordinated indentures are sometimes referred to together as the "indentures," the Aon&nbsp;plc debt guarantees and the Aon Delaware debt guarantees are sometimes referred
to together as the "guarantees," each of Aon&nbsp;plc and Aon Delaware, in each case in its capacity as issuer of debt securities, is sometimes referred to as the
"issuer," each of the Aon&nbsp;plc debt guarantor and the Aon Delaware debt guarantor is sometimes referred to as the "guarantor," each of the Aon&nbsp;plc senior trustee and the Aon Delaware
senior trustee is sometimes referred to as the "senior trustee," each of the Aon&nbsp;plc subordinated trustee and the Aon Delaware subordinated trustee is sometimes referred to as the "subordinated
trustee," and each of the senior trustee and the subordinated trustee is sometimes referred to as the "trustee." </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each
series of debt securities will be issued under the terms of an amendment or supplement to the applicable indenture that takes the form of a supplemental indenture or an officers'
certificate delivered under the authority of resolutions adopted by the board of directors of the issuer and the terms of that indenture. The terms of any debt securities and, if applicable, the
guarantees will include those stated in the applicable indenture and those made part of that indenture by reference to the Trust Indenture Act of 1939, which we refer to as the "Trust Indenture Act."
The debt securities will be subject to all those terms, and we refer prospective purchasers and holders of debt securities and guarantees to the applicable indenture and the Trust Indenture Act for a
statement of those terms. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
following summaries of various provisions of the debt securities, the indentures and the guarantees are not complete. They do not describe certain exceptions and qualifications
contained in the debt securities, the indentures and the guarantees, and are qualified in their entirety by reference to the provisions of the debt securities, the indentures and the guarantees.
Unless we otherwise indicate, capitalized terms have the meanings assigned to them in the applicable indenture. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An
applicable prospectus supplement will specify the issuer, the guarantor, if any, whether the debt securities offered thereby will be senior or subordinated debt and whether the debt
securities are to be guaranteed. The debt securities may be issued as part of units consisting of debt securities and other securities that Aon&nbsp;plc or Aon Delaware may offer under this
prospectus. If debt securities are issued as part of units of debt securities and other securities that Aon&nbsp;plc or Aon Delaware may issue under this prospectus, an applicable prospectus
supplement will describe any applicable material federal income tax consequences to holders. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> General  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The debt securities will be unsecured obligations of the applicable issuer. None of the indentures limit the amount of debt securities
that the issuer may issue. Each indenture provides that the issuer may issue debt securities from time to time in one or more series. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Aon&nbsp;plc senior debt securities and any Aon Delaware senior debt guarantee will be unsecured and unsubordinated obligations of Aon&nbsp;plc and will rank equally in right of
payment with Aon&nbsp;plc's other unsecured and unsubordinated obligations. The Aon&nbsp;plc subordinated debt securities and any </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>12</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2>Aon
Delaware subordinated debt guarantee will be subordinated obligations and will rank junior in right of payment, as more fully described in the applicable subordinated indenture, to
Aon&nbsp;plc's senior indebtedness. Because Aon&nbsp;plc is a holding company, the holders of Aon&nbsp;plc debt securities and Aon Delaware debt guarantees may not receive assets of our
subsidiaries in a liquidation or recapitalization until the claims of our subsidiaries' creditors and any insurance policyholders (in the case of our insurance subsidiaries) are paid, except to the
extent that Aon&nbsp;plc may have recognized claims against such subsidiaries. In addition, certain regulatory laws limit some of Aon&nbsp;plc's subsidiaries from making payments to Aon&nbsp;plc
of dividends and on loans and other transfers of funds. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Aon Delaware senior debt securities and any Aon&nbsp;plc senior debt guarantee will be unsecured and unsubordinated obligations of Aon Delaware and will rank equally in right of
payment with Aon Delaware's other unsecured and unsubordinated obligations. The Aon Delaware subordinated debt securities and any Aon&nbsp;plc subordinated debt guarantee will be subordinated
obligations and will rank junior in right of payment, as more fully described in the applicable subordinated indenture, to Aon Delaware's senior indebtedness. Because Aon Delaware is a holding
company, the holders of Aon Delaware debt securities and Aon&nbsp;plc debt guarantees may not receive assets of Aon Delaware's subsidiaries in a liquidation or recapitalization until the claims of
Aon Delaware's subsidiaries' creditors and any insurance policyholders (in the case of Aon Delaware's insurance subsidiaries) are paid, except to the extent that Aon Delaware may have recognized
claims against such subsidiaries. In addition, certain regulatory laws limit Aon Delaware's subsidiaries from making payments to Aon Delaware of dividends and on loans and other transfers of funds. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An
applicable prospectus supplement will describe the specific terms relating to the series of debt securities being offered. These terms will include some or all of the
following:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the name of the issuer of those debt securities and, if applicable, the name of the guarantor; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the title of the debt securities and whether the debt securities and, if applicable, the guarantee will be senior or
subordinated; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the total principal amount of the debt securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>whether the issuer will issue the debt securities in global form; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the maturity date or dates of the debt securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the interest rate or rates, if any (which may be fixed or variable), and, if applicable, the method used to calculate the
interest rate; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the date or dates from which interest will accrue and on which interest will be payable and the date or dates used to
determine the persons to whom interest will be paid; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>whether those debt securities will be guaranteed; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the place or places where principal of, and any premium or interest on, the debt securities will be paid; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>whether (and if so, when and under what terms and conditions) the debt securities may be redeemed by the issuer at its
option or at the option of the holders; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>whether there will be a sinking fund; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>if other than United States dollars and denominations of $1,000 or any multiple of $1,000, the currency or currencies or
currency unit or currency units or composite currency and denomination in which the debt securities will be issued and in which payments will be made; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>if other than the principal amount, the portion of the principal amount of the debt securities that the issuer will pay
upon acceleration of the maturity date; </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>13</FONT></P>

<HR NOSHADE>
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<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>if the debt securities are not subject to defeasance by the issuer; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any deletions from, modifications of or additions to the events of default applicable to such debt securities; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>whether the Aon&nbsp;plc debt securities will be exchangeable for or convertible into Class&nbsp;A Ordinary Shares of
Aon&nbsp;plc or other securities or property and the terms and conditions governing such exchange or conversion; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>whether the Aon Delaware debt securities will be exchangeable for or convertible into other securities or property and the
terms and conditions governing such exchange or conversion; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any other terms of the debt securities being offered. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
an issuer denominates the purchase price of a series of debt securities in a non-United States dollar currency or currencies or a non-United States dollar currency unit or units, or
if the principal of, any premium and interest on any series of debt securities is payable in a non-United States dollar currency or currencies or a non-United States dollar currency unit or units, an
applicable prospectus supplement will describe any special United States federal income tax considerations. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
issuer will pay principal and any interest, premium and additional amounts in the manner, at the places and subject to the restrictions set forth in the applicable debt securities,
the applicable indenture and any applicable prospectus supplement. The issuer will not impose a service charge for any transfer or exchange of debt securities, but it may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed. (Section&nbsp;2.05 of the indentures) </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
otherwise indicated in an applicable prospectus supplement, each issuer will issue debt securities in fully registered form, without coupons, in denominations of $1,000 or
multiples of $1,000. (Sections&nbsp;2.01 and 2.04 of the indentures) </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
issuer may offer to sell at a substantial discount below their stated principal amount, debt securities bearing no interest or interest at a rate that, at the time of issuance, is
below the prevailing market rate. An applicable prospectus supplement will describe any special United States federal income tax considerations applicable to any of those discounted debt securities. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
issuer may offer to sell debt securities in which the principal or interest will be determined by reference to one or more currency exchange rates, commodity prices, equity indices
or other factors. The principal amount or payment of interest applicable to those debt securities may be greater than or less than the amount of principal or interest otherwise payable, depending upon
the value of the applicable currency, commodity, equity index or other factor on the date on which that principal or interest is due. An applicable prospectus supplement will describe the methods used
to determine the amount of principal or interest payable on any date, the currencies, commodities, equity indices or other factors to which the amount payable on that date is linked and certain
additional tax considerations applicable to those debt securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
indentures do not restrict our or Aon Delaware's ability to incur unsecured indebtedness or, subject to the restrictions described in "&#151;Consolidation and Merger," to
engage in reorganizations, restructurings, mergers, consolidations or similar transactions that have the effect of increasing our or Aon Delaware's indebtedness. Accordingly, unless an applicable
prospectus supplement states otherwise, neither the debt securities nor any guarantees will contain any provisions that afford holders protection against the issuer or, if applicable, the guarantor
incurring unsecured indebtedness or engaging in certain reorganizations or transactions. As a result, we or Aon Delaware could become highly leveraged. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>14</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><B> Events of Default  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;With respect to any series of debt securities, "event of default" means any of the
following:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>failure to pay the principal of, or any premium on, any debt security of that series when due; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>failure to pay the interest or any additional amount on any debt security of that series when due and such failure
continues for 30&nbsp;days; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>if that series of debt securities is guaranteed, the cessation of the guarantee of any debt security of that series to be
in full force and effect, the declaration that the guarantee of those debt securities is null and void and unenforceable, the finding that the guarantee of those debt securities is invalid or the
denial by the guarantor of its liability under its guarantee of those debt securities (other than by reason of release of the guarantor in accordance with the terms of the applicable indenture); </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>failure by the issuer or, if applicable, the guarantor to comply with any of its other agreements contained in the
applicable indenture and the continuation of that failure for 90&nbsp;days after written notice of that failure is given to the issuer or, if applicable, the guarantor from the applicable trustee
(or to the issuer and, if applicable, the guarantor and that trustee from the holders of at least 25% in principal amount of the outstanding debt securities of that series); </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>certain events of bankruptcy, insolvency or reorganization relating to the issuer or, if applicable, the guarantor; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>if that series of debt securities is convertible or exchangeable into Class&nbsp;A Ordinary Shares or any other
securities or property, default in the delivery of any Class&nbsp;A Ordinary Shares, together with cash instead of fractional shares, or any other securities or property, as applicable, when
required to be delivered upon conversion or exchange of any debt security of that series, and continuance of such default for a period of 10&nbsp;business days; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any other event of default provided with respect to debt securities of that series that is described in an applicable
prospectus supplement. (Section&nbsp;6.01 of the indentures) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
there is a continuing event of default with respect to any outstanding series of debt securities, the applicable trustee or the holders of at least 25% of the outstanding principal
amount of the debt securities of that series may require the issuer or, if applicable, the guarantor to pay immediately the principal (or, if the debt securities of that series are discount
securities, that portion of the principal amount as may be specified in the terms of that series) of and accrued and unpaid interest, if any, on all debt securities of that series. However, at any
time after that trustee or the holders, as the case may be, declare that acceleration with respect to debt securities of any series, but before the applicable person has obtained a judgment or decree
for payment of the money, the holders of a majority in principal amount of the outstanding debt securities of that series may, under certain conditions, cancel such acceleration if (i)&nbsp;all
events of default (other than the non-payment of accelerated principal) with respect to debt securities of that series have been cured or (ii)&nbsp;all such events of default have been waived, each
as provided in the applicable indenture. (Section&nbsp;6.01 of the indentures) For information as to waiver of defaults, see "&#151;Modification and Waiver." The particular provisions
relating to acceleration of the maturity of a portion of the principal amount of such debt securities that are discount securities triggered by an event of default shall be described in an applicable
prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each
indenture provides that, subject to the duties of the applicable trustee to act with the required standard of care if there is a continuing event of default, the applicable trustee
need not exercise any of its rights or powers under the indenture at the request or direction of any of the holders of debt securities, unless those holders have offered to the applicable trustee
security or indemnity reasonably satisfactory to it. (Section&nbsp;6.04 of the indentures) Subject to those provisions for </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>15</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>security
or indemnification of the applicable trustee and certain other conditions, the holders of the majority in principal amount of the outstanding debt securities of any series will have the right
to direct the time, method and place of conducting any proceeding for any remedy available to the applicable trustee or exercising any trust or power that trustee holds, in each case, with respect to
the debt securities of that series. (Section&nbsp;6.06 of the indentures) </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No
holder of any debt security of any series will have any right to institute any proceeding with respect to any indenture or for any remedy under the applicable indenture
unless:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the applicable trustee has failed to institute the proceeding for 60&nbsp;days after the holder has previously given
that trustee written notice of a continuing event of default with respect to debt securities of that series; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the holders of at least 25% in principal amount of the outstanding debt securities of that series have made written
request, and offered reasonable security or indemnity, to the applicable trustee to institute the proceeding as trustee; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the applicable trustee has not received from the holders of a majority in principal amount of the outstanding debt
securities of that series&nbsp;a direction inconsistent with that request. (Section&nbsp;6.04 of the indentures) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;However,
the holder of any debt security will have an absolute and unconditional right to receive payment of the principal of, and any premium or interest on, that debt security on or
after the date or dates they are to be paid as expressed in or pursuant to that debt security and to institute suit for the enforcement of any such payment. (Section&nbsp;6.04 of the indentures) </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each
indenture provides that the applicable trustee shall provide notice to the holders of debt securities of any series within 90&nbsp;days of the occurrence of any default with
respect to debt securities of that series known to such trustee, except that the trustee need not provide holders of debt securities of any series notice of any default (other than the non-payment of
principal or any premium, interest or
additional amounts) if such default has been cured and it considers it in the interest of the holders of debt securities of that series not to provide that notice. (Section&nbsp;6.07 of the
indentures) </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Consolidation and Merger  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each indenture provides that each of the issuer and the guarantor may consolidate with or merge or convert into, or convey, transfer or
lease its properties or assets substantially as an entirety to, another person without the consent of any debt security holders if, along with certain other conditions set forth in the
indentures:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the issuer or the guarantor, as the case may be, is the successor person; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the successor person (if other than the issuer or the guarantor, as the case may be) formed by such consolidation or
conversion or into which the issuer or the guarantor, as the case may be, merges or converts or which acquires or leases the assets of the issuer or the guarantor, as the case may be, substantially as
an entirety: </FONT> <FONT SIZE=2>
<BR><BR></FONT>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>in the case of Aon Delaware, is a corporation or other entity organized and existing under the laws of the United States,
any state thereof or the District of Columbia; and  </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>in the case of either Aon&nbsp;plc or Aon Delaware, expressly assumes by supplemental indenture the obligations of the
issuer or the guarantor, as the case may be, in relation to the debt securities or the guarantees, as the case may be, and under the applicable indenture; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD></DL>
</DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>immediately after giving effect to such transaction, there is no event of default, and no event which, after notice or
passage of time or both, would become an event of default; and </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>16</FONT></P>

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<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Aon&nbsp;plc or Aon Delaware, as the case may be, has delivered to the trustee an officers' certificate stating that the
transaction complies with the conditions set forth in the applicable indenture. (Section&nbsp;11.01 of the indentures) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It
is possible that a merger, transfer, lease or other transaction could be treated for United States federal income tax purposes as a taxable exchange by the holders of debt securities
or guarantees for new securities, which could result in holders of debt securities or guarantees recognizing taxable gain or loss for US federal income tax purposes. A merger, transfer, lease or other
transaction could also have adverse tax consequences to holders of debt securities or guarantees under other tax laws to which the holders are subject. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Payment of Additional Amounts by Aon&nbsp;plc  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Payments made by Aon&nbsp;plc as issuer under or with respect to the Aon&nbsp;plc debt securities and as Aon Delaware debt
guarantor under or with respect to the Aon Delaware debt guarantees will be made free and clear of and without withholding or deduction for or on account of any present or future income, stamp or
other tax, duty, levy, impost, assessment or other governmental charge of any nature whatsoever imposed or levied by or on behalf of the government of the United Kingdom, of any territory of the
United Kingdom or by any authority or agency therein or thereof having the power to tax, which we refer to collectively as "Taxes," unless Aon&nbsp;plc is required to withhold or deduct Taxes by
law. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
Aon&nbsp;plc is required to withhold or deduct any amount for or on account of Taxes from any payment made with respect to the Aon&nbsp;plc debt securities or Aon Delaware debt
guarantees, Aon&nbsp;plc will pay such additional amounts as may be necessary so that the net amount received by each holder (including additional amounts) after such withholding or deduction will
not be less than the amount the holder would have received if the Taxes had not been withheld or deducted; </FONT><FONT SIZE=2><I>provided</I></FONT><FONT SIZE=2> that no additional amounts will be
payable with respect to Taxes:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that would not have been imposed but for the existence of any present or former connection between such holder or
beneficial owner of the Aon&nbsp;plc debt securities or Aon Delaware debt guarantees (or between a fiduciary, settlor, beneficiary, member or shareholder of, or possessor of a power over, such
holder or beneficial owner, if such holder or beneficial owner is an estate, trust, partnership or corporation) and the United Kingdom or any political subdivision or territory or possession thereof
or therein or area subject to its jurisdiction, including, without limitation, such holder or beneficial owner (or such fiduciary, settlor, beneficiary, member, shareholder or possessor) being or
having been a citizen or resident thereof or treated as a resident thereof or domiciled thereof or a national thereof or being or having been present or engaged in trade or business therein or having
or having had a permanent establishment therein; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that are estate, inheritance, gift, sales, transfer, personal property, wealth or similar taxes, duties, assessments or
other governmental charges; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>payable other than by withholding from payments of principal of and premium, if any, or interest on the Aon&nbsp;plc
debt securities or the Aon Delaware debt guarantees, as the case may be; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that would not have been imposed but for the failure of the applicable recipient of such payment to comply with any
certification, identification, information, documentation or other reporting requirement to the extent: </FONT> <FONT SIZE=2>
<BR><BR></FONT>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>such compliance is required by applicable law or administrative practice or an applicable treaty as a precondition to
exemption from, or reduction in, the rate of deduction or withholding of such Taxes; and </FONT></DD></DL>
</DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>17</FONT></P>

<HR NOSHADE>
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<UL>
<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>at least 30&nbsp;days before the first payment date with respect to which such additional amounts shall be payable,
Aon&nbsp;plc has notified such recipient in writing that such recipient is required to comply with such requirement; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD></DL>
</UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that would not have been imposed but for the presentation of an Aon&nbsp;plc debt security or an Aon Delaware debt
guarantee (where presentation is required) for payment on a date more than 30&nbsp;days after the date on which such payment became due and payable or the date on which payment thereof was duly
provided for, whichever occurred later; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that are imposed on a payment to an individual and are required to be made pursuant to any European Union Directive on the
taxation of savings income relating to the proposal for a directive on the taxation of savings income published by the ECOFIN Council on December&nbsp;13, 2001 or any other Directive implementing
the conclusions of the ECOFIN Council meeting of November&nbsp;26-27, 2000 on the taxation of savings income, or any law implementing or complying with, or introduced in order to conform to, such
Directive; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>that would not have been imposed if presentation for payment of the relevant Aon&nbsp;plc debt securities or Aon
Delaware debt guarantees had been made to a paying agent other than the paying agent to which the presentation was made; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any combination of the foregoing items; </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>nor
shall additional amounts be paid with respect to any payment of the principal of or interest on any Aon&nbsp;plc debt security or Aon Delaware debt guarantees to any such holder who is a
fiduciary or a partnership or a beneficial owner who is other than the sole beneficial owner of such payment to the extent a beneficiary or settlor with respect to such fiduciary or a member of such
partnership or a beneficial owner would not have been entitled to such additional amounts had it been the holder of the debt security. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All
references in this prospectus, other than under "&#151;Defeasance" below, to the principal of or premium, if any, or interest, if any, on or the net proceeds received on the
sale or exchange of, any debt securities shall be deemed to include additional amounts to the extent that, in that context, additional amounts are, were or would be payable. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc
has agreed in the Aon&nbsp;plc senior indenture and the Aon&nbsp;plc subordinated indenture that at least one paying agent for each series of Aon&nbsp;plc debt
securities will be located outside the United Kingdom. Aon&nbsp;plc has also agreed that if it maintains a paying agent with respect to a particular series of Aon&nbsp;plc debt securities in any
member state of the European Union, it will maintain a paying agent in at least one member state (other than the United Kingdom) that will not be obliged to withhold or deduct
taxes pursuant to any law implementing European Council Directive 2003/48/EC or any other Directive implementing the conclusions of the ECOFIN Council meeting of November&nbsp;26-27, 2000 on the
taxation of savings income, provided there is at least one member state that does not require a paying agent to withhold or deduct pursuant to such Directive. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aon&nbsp;plc's
obligation to pay additional amounts if and when due will survive the termination of the indentures and the payment of all other amounts in respect of the debt
securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If,
as a result of Aon&nbsp;plc's consolidation, merger with or conversion into a successor person organized under the laws of a jurisdiction other than the United Kingdom (or, in each
case, any political subdivision or taxing authority thereof) as described above under "&#151;Consolidation and Merger", or the conveyance, transfer or lease by Aon&nbsp;plc of its assets
substantially as an entirety to such successor person, and such an entity expressly assumes the obligations of Aon&nbsp;plc under the indentures and any outstanding Aon&nbsp;plc debt securities
and Aon Delaware debt guarantees, such successor person will pay additional amounts on the same basis as described above, except that references to the "United Kingdom" will be treated as references
to both the United Kingdom and the country in which such successor person is organized or resident (or deemed resident for tax purposes). </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>18</FONT></P>

<HR NOSHADE>
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 </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Optional Tax Redemption  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In the case of Aon plc debt securities and Aon Delaware debt securities benefiting from an Aon Delaware debt guarantee, the issuer may
redeem any series of those debt securities in whole but not in part at any time, on giving not less than 30 nor more than 90&nbsp;days' notice of such redemption, at a redemption price equal to the
principal amount plus accrued interest, if any, to the date fixed for redemption (except in the case of discounted debt securities, which may be redeemed at the redemption price specified by the terms
of each series of such debt securities), if:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>The issuer determines that, as a result of any change in, amendment to or announced proposed change in the laws or any
regulations or rulings promulgated thereunder of the United Kingdom (or of any political subdivision or taxing authority thereof) or, in the event of the assumption of Aon&nbsp;plc's obligations
under the Aon&nbsp;plc debt securities or Aon Delaware debt securities benefitting from an Aon Delaware debt guarantee, as the case may be, by a successor person not organized under the laws of the
United States or the United Kingdom (or any political subdivision or taxing authority thereof as described under "&#151;Consolidation and Merger"), the jurisdiction in which such successor
person is organized (or deemed resident for tax purposes), or any change in the application or official interpretation of such laws, regulations or rulings, or any change in the application or
official interpretation of, or any execution of or amendment to, any treaty or treaties affecting taxation to which any such jurisdiction is a party, which change, execution or amendment becomes
effective on or after (i)&nbsp;the issue date of the applicable Aon&nbsp;plc debt securities or Aon Delaware debt guarantee, as the case may be, (ii)&nbsp;in the event of the assumption by a
successor person of the obligations of Aon&nbsp;plc under the applicable indenture, and the Aon&nbsp;plc debt securities or the Aon Delaware debt guarantees, as the case may be, as described above
under "&#151;Consolidation and Merger," under the laws of a jurisdiction other than the United States or the United Kingdom (or, in each case, any political subdivision or taxing authority
thereof), with respect to taxes imposed by such other jurisdiction, the date of the transaction resulting in such assumption or (iii)&nbsp;such other date specified with respect to the relevant debt
securities and, in the case of each of (i), (ii)&nbsp;or (iii), Aon&nbsp;plc would be required to pay additional amounts (as described under "&#151;Payment of Additional Amounts by
Aon&nbsp;plc") with respect to that series of Aon&nbsp;plc debt securities or under an Aon Delaware debt guarantee, as the case may be, on the next succeeding interest payment date for the
relevant debt securities and the payment of such additional amounts cannot be avoided by the use of reasonable measures available to Aon&nbsp;plc; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>The issuer determines, based upon an opinion of independent counsel of recognized standing that, as a result of any action
taken by any legislative body of, taxing authority of, or any action brought in a court of competent jurisdiction in, the United Kingdom (or any political subdivision or taxing authority thereof) or,
in the event of the assumption of Aon&nbsp;plc's obligations under the Aon&nbsp;plc debt securities or Aon Delaware debt securities benefitting from an Aon Delaware debt guarantee, as the case may
be, by a successor person not organized under the laws of the United States or the United Kingdom (or, in each case, any political subdivision thereof as described above under
"&#151;Consolidation and Merger"), the jurisdiction in which such successor person is organized (or deemed resident for tax purposes), which action is taken or brought on or after
(i)&nbsp;the issue date of the applicable Aon&nbsp;plc debt securities or Aon Delaware debt guarantee, as the case may be, (ii)&nbsp;in the event of the assumption by a successor person of the
obligations of Aon&nbsp;plc under the applicable indenture and the Aon&nbsp;plc debt securities or the Aon Delaware debt guarantees, as the case may be, as described above under
"&#151;Consolidation and Merger," under the laws of a jurisdiction other than the United Kingdom or the United States (or, in each case, any political subdivision or taxing authority thereof),
with respect to taxes imposed by such other jurisdiction, the date of the transaction resulting in such assumption or (iii)&nbsp;such other date specified with respect to the relevant debt
securities and, in the case of each of (i), </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>19</FONT></P>

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<UL>
<UL>

<P style="font-family:times;"><FONT SIZE=2>(ii)&nbsp;and
(iii), there is a substantial probability that the circumstances described above would exist. </FONT></P>

</UL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No
notice of any such redemption may be given earlier than 90&nbsp;days prior to the earliest date on which Aon&nbsp;plc would be obligated to pay any additional amounts. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
the case of Aon&nbsp;plc debt securities and Aon Delaware debt securities benefiting from an Aon Delaware debt guarantee, Aon&nbsp;plc will also pay to each holder, or make
available for payment to each such holder, on the redemption date, any additional amounts resulting from the payment of such redemption price by Aon&nbsp;plc as issuer or guarantor, as the case may
be. Prior to the delivery of any notice of redemption, the issuer will deliver to the trustee an officer's certificate stating that it is entitled to effect or cause a redemption and setting forth a
statement of facts showing that the conditions precedent of the right so to redeem or cause such redemption have occurred, and in the case of a redemption based on an opinion of independent counsel
referred to in the second bullet above, such independent counsel's opinion. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any
notice of redemption will be irrevocable once an officer's certificate has been delivered to the trustee. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Defeasance  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Defeasance and Discharge.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Unless the debt securities of any series provide otherwise, the issuer and, if applicable, the guarantor may
be discharged
from any and all obligations in respect of the debt securities of that series and any related guarantee, as applicable (except for certain obligations to register the transfer or exchange of debt
securities of that series, to replace stolen, destroyed, lost or mutilated debt securities of that series, to maintain paying agencies, to execute and furnish definitive securities evidenced by
temporary securities, to return moneys deposited with or paid to the trustee or any paying agent remaining unclaimed for three years, to compensate and indemnify the applicable trustee or to furnish
such trustee (if that trustee is not the registrar) with the names and addresses of
holders of debt securities of that series). This discharge, referred to as defeasance, will occur only if, among other things:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the issuer or, if applicable, the guarantor or both irrevocably deposit with the applicable trustee, in trust, money
and/or securities of the government which issues the currency in which the debt securities of that series are payable or securities of agencies backed by the full faith and credit of that government,
which, through the payment of interest and principal in accordance with their terms, will provide, in the opinion of a nationally recognized public accounting firm, enough money to pay each
installment of principal of, and any premium and interest on, and any additional amounts known to be payable at the time of such defeasance and discharge and any mandatory sinking fund payments in
respect of, the debt securities of that series on the applicable due dates for those payments in accordance with the terms of those debt securities; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the issuer or, if applicable, the guarantor delivers to the applicable trustee an opinion of counsel confirming that the
holders of the debt securities of that series will not recognize income, gain or loss for United States federal income tax purposes as a result of such defeasance and will be subject to United States
federal income tax on the same amounts and in the same manner and at the same times as would have been the case if the discharge had not occurred. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;That
opinion must state that the issuer or, if applicable, the guarantor has received from the United States Internal Revenue Service a ruling or, since the date of execution of the
applicable indenture, there has been a change in the applicable United States federal income tax law, in any case, in support of that opinion. (Sections&nbsp;13.02 and 13.04 of the indentures) </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>20</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
addition, the issuer or, if applicable, the guarantor or both may also obtain a discharge of either indenture with respect to all debt securities issued under that indenture and any
related guarantee, as applicable, by depositing with the applicable trustee, in trust, enough money to pay all amounts due on the debt securities on the date those payments are due or upon redemption
of all of those debt securities, so long as those debt securities are by their terms to become due and payable within one year or are to be called for redemption within one year. (Section&nbsp;12.01
of the indentures) </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Defeasance of Certain Covenants and Certain Events of Default.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Unless the debt securities of any series provide otherwise, upon
compliance with
certain conditions:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the issuer and, if applicable, the guarantor may omit to comply with any provision of the applicable indenture (except for
certain obligations to register the transfer or exchange of debt securities of that series, to replace stolen, destroyed, lost or mutilated debt securities of that series, to maintain paying agencies,
to execute and furnish definitive securities evidenced by temporary securities, to return moneys deposited with or paid to the trustee or any paying agent on any debt security and not applied to
payments on the debt securities but remaining unclaimed for three years, to punctually pay the principal of and premium or interest, if any, on the debt securities, to deliver to the trustee an annual
statement as to default, to adhere to the covenants with respect to payment on the debt securities on default, to adhere to the resignation or removal procedures regarding the trustee, to compensate
and indemnify the applicable trustee or to furnish that trustee (if that trustee is not the registrar) with the names and addresses of holders of debt securities of that series), including the
covenant described under "&#151;Consolidation and Merger"; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any omission to comply with those covenants will not constitute an event of default with respect to the debt securities of
that series ("covenant defeasance"). (Sections&nbsp;13.03 and 13.04 of the indentures) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
conditions include, among other things:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>irrevocably depositing with the applicable trustee, in trust, money and/or securities of the government which issues the
currency in which the debt securities of that series are payable or securities of agencies backed by the full faith and credit of that government, which, through the payment of interest and principal
in accordance with their terms, will provide, in the opinion of a nationally recognized public accounting firm, enough money to pay each installment of principal of, any premium and interest on, and
any additional amounts known to be payable at the time of such covenant defeasance and any mandatory sinking fund payments in respect of, the debt securities of that series on the applicable due dates
for those payments in accordance with the terms of those debt securities; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>delivering to the applicable trustee an opinion of counsel to the effect that the holders of the debt securities of that
series will not recognize income, gain or loss for United States federal income tax purposes as a result of the covenant defeasance and will be subject to United States federal income tax on the same
amounts and in the same manner and at the same times as would have been the case if the covenant defeasance had not occurred. (Section&nbsp;13.04 of the indentures) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Covenant Defeasance and Certain Other Events of Default.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;If the issuer or, if applicable, the guarantor exercises or both exercise the
option to
effect a covenant defeasance with respect to the debt securities of any series as described above and the debt securities of that series are thereafter declared due and payable because of an event of
default (other than an event of default caused by failing to comply with the covenants that are defeased), the amount of money and securities it has or they have deposited with the applicable trustee
would be sufficient to pay amounts due on the debt securities of that series on their respective due dates but may not be sufficient to pay amounts due on the debt </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>21</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>securities
of that series at the time of acceleration resulting from that event of default. However, the issuer and, if applicable, the guarantor would remain liable for any shortfall. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Modification and Waiver  </B></FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each indenture provides that the issuer and, if applicable, the guarantor may enter into supplemental indentures with the applicable
trustee without the consent of the holders of debt securities to:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>document the fact that a successor entity has assumed the issuer's or, if applicable, the guarantor's obligations; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>add covenants or events of default or to surrender any right or power conferred upon the issuer or, if applicable, the
guarantor for the benefit of the holders of debt securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>add or change such provisions as are necessary to permit the issuance of global debt securities; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>cure any ambiguity or correct any inconsistency in the indenture or in the terms of the debt securities as shall not
adversely affect the interests of the holders of debt securities in any material respect; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>conform the applicable indenture or the terms of the debt securities or guarantees to any terms set forth in this
prospectus or an applicable prospectus supplement; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>document the fact that a successor trustee has been appointed; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>establish the forms and terms of debt securities of any series. (Section&nbsp;10.01 of the indentures) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
issuer and, if applicable, the guarantor may enter into a supplemental indenture to modify an indenture with the consent of the applicable trustee and the holders of at least a
majority in principal amount of outstanding debt securities of each series affected by such supplemental indenture. However, the issuer and, if applicable, the guarantor may not modify an indenture
without the consent of the holders of all then-outstanding debt securities of the affected series issued under that indenture to:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>extend the maturity date of, or change the due date of any installment of principal of or interest on, or payment of
additional amounts with respect to, the debt securities of that series; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>reduce the principal amount of, or any premium payable or interest rate on, the debt securities of that series; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>reduce the amount due and payable upon acceleration or make payments thereon payable in any currency other than that
provided in that debt security; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>make any change that adversely affects the right, if any, to convert or exchange any debt security for shares or other
securities or property in accordance with its terms; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>impair the right to institute suit for the enforcement of any such payment on or after its due date; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>reduce the percentage in principal amount of outstanding debt securities of any series, the consent of whose holders is
necessary to effect any such modification or amendment of the indenture, for waiver of compliance with certain covenants and provisions in the indenture or for waiver of certain defaults.
(Section&nbsp;10.02 of the indentures) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
holders of at least a majority in principal amount of the outstanding debt securities of any series may on behalf of the holders of all debt securities of that series waive any past
default under the applicable indenture with respect to that series, except a default in the payment of the principal of or any premium or any interest on, any debt security of that series or in
respect of a provision which under the applicable indenture cannot be modified or amended without the consent of the holder of each outstanding debt security of that affected series.
(Section&nbsp;6.09 of the indentures) </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>22</FONT></P>

<HR NOSHADE>
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 </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Global Securities  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The debt securities of a series may be issued in whole or in part in the form of one or more global certificates that the issuer will
deposit with a depositary identified in an applicable prospectus supplement. Unless and until it is exchanged in whole or in part for the individual debt securities that it represents, a global
security may not be transferred except as a whole:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>by the applicable depositary to a nominee of the depositary; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>by any nominee to the depositary itself or another nominee; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>by the depositary or any nominee to a successor depositary or any nominee of the successor. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An
applicable prospectus supplement will describe the specific terms of the depositary arrangement with respect to a series of debt securities. We anticipate that the following
provisions will generally apply to depositary arrangements. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;When
a global security is issued, the depositary for the global security or its nominee will credit, on its book-entry registration and transfer system, the respective principal amounts
of the individual debt securities represented by that global security to the accounts of persons that have accounts with the depositary ("participants"). Those accounts will be designated by the
dealers, underwriters or agents with respect to the underlying debt securities or by the issuer if those debt securities are offered and sold directly by the issuer. Ownership of beneficial interests
in a global security will be limited to participants or persons that may hold interests through participants. For interests of participants, ownership of beneficial interests in the global security
will be shown on records maintained by the applicable depositary or its nominee. For interests of persons other than participants, that ownership information will be shown on the records of
participants. Transfer of that ownership will be effected only through those records. The laws of some states require that certain purchasers of securities take physical delivery of securities in
definitive form. These limits and laws may impair our ability to transfer beneficial interests in a global security. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As
long as the depositary for a global security, or its nominee, is the registered owner of that global security, the depositary or nominee will be considered the sole owner or holder of
the debt securities represented by the global security for all purposes under the applicable indenture. Except as provided below, owners of beneficial interests in a global
security:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will not be entitled to have any of the underlying debt securities registered in their names; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will not receive or be entitled to receive physical delivery of any of the underlying debt securities in definitive form;
and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>will not be considered the owners or holders under the indenture relating to those debt securities. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Payments
of the principal of, any premium on and any interest on individual debt securities represented by a global security registered in the name of a depositary or its nominee will be
made to the depositary or its nominee as the registered owner of the global security representing such debt securities. No issuer, guarantor, trustee, paying agent or registrar for the debt securities
will be
responsible for any aspect of the records relating to or payments made by the depositary or any participants on account of beneficial interests in the global security. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It
is expected that the depositary or its nominee, upon receipt of any payment of principal, any premium or interest relating to a global security representing any series of debt
securities, immediately will credit participants' accounts with the payments. Those payments will be credited in amounts proportional to the respective beneficial interests of the participants in the
principal amount of the global security as shown on the records of the depositary or its nominee. It is also expected that payments by participants to owners of beneficial interests in the global
security held through those </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>23</FONT></P>

<HR NOSHADE>
<P style='font-family:times;page-break-before:always'></p>
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<P style="font-family:times;"><FONT SIZE=2>participants
will be governed by standing instructions and customary practices. This is now the case with securities held for the accounts of customers registered in "street name." Those payments will
be the sole responsibility of those participants. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
the depositary for a series of debt securities is at any time unwilling, unable or ineligible to continue as depositary and a successor depositary is not appointed within
90&nbsp;days, the issuer will issue individual debt securities of that series in exchange for the global security or securities representing that series. In addition, the issuer may at any time in
its sole discretion determine not to have any debt securities of a series represented by one or more global securities. In that event, the issuer will issue individual debt securities of that series
in exchange for the global security or securities. Furthermore, if specified in an applicable prospectus supplement, an owner of a beneficial interest in a global security may, on terms acceptable to
the issuer, the trustee and the applicable depositary, receive individual debt securities of that series in exchange for those beneficial interests. The foregoing is subject to any limitations
described in an applicable prospectus supplement. In any such instance, the owner of the beneficial interest will be entitled to physical delivery of individual debt securities equal in principal
amount to the beneficial interest and to have the debt securities registered in its name. Those individual debt securities will be issued in any authorized denominations. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Subordination under the Aon&nbsp;plc Subordinated Debt Indenture  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Aon&nbsp;plc subordinated debt securities and the Aon&nbsp;plc subordinated debt guarantees will be subordinate and junior in
right of payment to all senior indebtedness of Aon&nbsp;plc and Aon Delaware, respectively, to the extent provided in the Aon&nbsp;plc subordinated debt indenture. (Sections&nbsp;16.01 and 16.03
of the Aon&nbsp;plc subordinated debt indenture) Neither Aon&nbsp;plc, as issuer, nor Aon Delaware, as Aon&nbsp;plc subordinated debt guarantor, may make any payments on account of principal or
any premium, redemption, interest or any other amount payable under the Aon&nbsp;plc
subordinated debt securities or the Aon&nbsp;plc subordinated debt guarantees, as the case may be, at any time when it has defaulted with respect to payment of principal or any premium, interest,
sinking fund or other payment due on its senior indebtedness. (Section&nbsp;16.02 of the Aon&nbsp;plc subordinated debt indenture) If either Aon&nbsp;plc, as issuer, or Aon Delaware, as
Aon&nbsp;plc subordinated debt guarantor, makes any payment described in the foregoing sentence before all of its senior indebtedness is paid in full, such payment or distribution will be applied to
pay off the applicable senior indebtedness which remains unpaid. Subject to the condition that the senior indebtedness of Aon&nbsp;plc or Aon Delaware, as the case may be, is paid in full, if any
such payments are made on the senior indebtedness of Aon&nbsp;plc or Aon Delaware, as the case may be, as described above, the holders of Aon&nbsp;plc subordinated debt securities or
Aon&nbsp;plc subordinated debt guarantees will be subrogated to the rights of the senior debt security holders of Aon&nbsp;plc or Aon Delaware, as the case may be. (Section&nbsp;16.03 of the
Aon&nbsp;plc subordinated debt indenture) </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Aon&nbsp;plc subordinated debt indenture defines the term "senior indebtedness" to mean:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>all indebtedness of Aon&nbsp;plc or Aon Delaware, as the case may be, whether outstanding on the date of the
Aon&nbsp;plc subordinated debt indenture or incurred later, for money borrowed (other than Aon&nbsp;plc subordinated debt securities or Aon Delaware subordinated debt securities, as the case may
be) or otherwise evidenced by a note or similar instrument given in connection with the acquisition of any property or assets (other than inventory or other similar property acquired in the ordinary
course of business), including securities or for the payment of money relating to a capitalized lease obligation (as defined in the Aon&nbsp;plc subordinated debt indenture); </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any indebtedness of others described in the preceding bullet point which Aon&nbsp;plc or Aon Delaware, as the case may
be, has guaranteed or which is otherwise its legal obligation; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any of Aon&nbsp;plc's or Aon Delaware's, as the case may be, indebtedness under interest rate swaps, caps or similar
hedging agreements and foreign exchange contracts, currency swaps or similar agreements; and </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>24</FONT></P>

<HR NOSHADE>
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<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>renewals, extensions, refundings, restructurings, amendments and modifications of any indebtedness or guarantee described
above. (Section&nbsp;1.01 of the Aon&nbsp;plc subordinated debt indenture) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"Senior
indebtedness" does not include:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any indebtedness of Aon&nbsp;plc or Aon Delaware, as the case may be, to its subsidiaries; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any indebtedness of Aon&nbsp;plc or Aon Delaware, as the case may be, which by its terms ranks equal or subordinated to
the Aon&nbsp;plc subordinated debt securities or Aon&nbsp;plc subordinated debt guarantees in rights of payment or upon liquidation. (Section&nbsp;1.01 of the Aon&nbsp;plc subordinated debt
indenture) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Because
of the subordination provisions described above, some of the general creditors of Aon&nbsp;plc or Aon Delaware, as the case may be, may recover proportionately more than
holders of the Aon&nbsp;plc subordinated debt securities or Aon&nbsp;plc subordinated debt guarantees if the assets of Aon&nbsp;plc or Aon Delaware, as the case may be, are distributed as a
result of insolvency or bankruptcy. The Aon&nbsp;plc subordinated debt indenture provides that the subordination provisions will not apply to cash, properties and securities held in trust pursuant
to the satisfaction and discharge and the legal defeasance provisions of the Aon&nbsp;plc subordinated debt indenture. (Section&nbsp;16.03 of the Aon&nbsp;plc subordinated debt indenture) See
"&#151;Defeasance" for additional information regarding the legal defeasance provisions affecting the subordinated debt. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will set forth (or incorporate by reference) the approximate amount of senior indebtedness outstanding for each of Aon&nbsp;plc and Aon Delaware as of a recent date in any
prospectus supplement under which we offer to sell Aon&nbsp;plc subordinated debt securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Subordination under the Aon Delaware Subordinated Debt Indenture  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Aon Delaware subordinated debt securities and the Aon Delaware subordinated debt guarantees will be subordinate and junior in right
of payment to all senior indebtedness of Aon Delaware and Aon&nbsp;plc, respectively, to the extent provided in the Aon Delaware subordinated debt indenture. (Sections&nbsp;16.01 and 16.03 of the
Aon Delaware subordinated debt
indenture) Neither Aon Delaware, as issuer, nor Aon&nbsp;plc, as Aon Delaware subordinated debt guarantor, may make any payments on account of principal or any premium, redemption, interest or any
other amount payable under the Aon Delaware subordinated debt securities or the Aon Delaware subordinated debt guarantees, as the case may be, at any time when it has defaulted with respect to payment
of principal or any premium, interest, sinking fund or other payment due on its senior indebtedness. (Section&nbsp;16.02 of the Aon Delaware subordinated debt indenture) If either Aon Delaware, as
issuer, or Aon&nbsp;plc, as Aon Delaware subordinated debt guarantor, makes any payment described in the foregoing sentence before all of its senior indebtedness is paid in full, such payment or
distribution will be applied to pay off the applicable senior indebtedness which remains unpaid. Subject to the condition that the senior indebtedness of Aon Delaware or Aon&nbsp;plc, as the case
may be, is paid in full, if any such payments are made on the senior indebtedness of Aon Delaware or Aon&nbsp;plc, as the case may be, as described above, the holders of Aon Delaware subordinated
debt securities or Aon Delaware subordinated debt guarantees will be subrogated to the rights of the senior debt security holders of Aon Delaware or Aon&nbsp;plc, as the case may be.
(Section&nbsp;16.03 of the Aon Delaware subordinated debt indenture) </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Aon Delaware subordinated debt indenture defines the term "senior indebtedness" to mean:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>all indebtedness of Aon Delaware or Aon&nbsp;plc, as the case may be, whether outstanding on the date of the Aon
Delaware subordinated debt indenture or incurred later, for money borrowed (other than Aon Delaware subordinated debt securities or Aon&nbsp;plc subordinated debt securities, as the case may be) or
otherwise evidenced by a note or similar instrument given in connection with the acquisition of any property or assets (other than inventory or other similar property </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>25</FONT></P>

<HR NOSHADE>
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<UL>
<UL>

<P style="font-family:times;"><FONT SIZE=2>acquired
in the ordinary course of business), including securities or for the payment of money relating to a capitalized lease obligation (as defined in the Aon Delaware subordinated debt indenture); </FONT></P>

</UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any indebtedness of others described in the preceding bullet point which Aon Delaware or Aon&nbsp;plc, as the case may
be, has guaranteed or which is otherwise its legal obligation; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any of Aon Delaware's or Aon&nbsp;plc's, as the case may be, indebtedness under interest rate swaps, caps or similar
hedging agreements and foreign exchange contracts, currency swaps or similar agreements; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>renewals, extensions, refundings, restructurings, amendments and modifications of any indebtedness or guarantee described
above. (Section&nbsp;1.01 of the Aon Delaware subordinated debt indenture) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"Senior
indebtedness" does not include:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any indebtedness of Aon Delaware or Aon&nbsp;plc, as the case may be, to its subsidiaries; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any indebtedness of Aon Delaware or Aon&nbsp;plc, as the case may be, which by its terms ranks equal or subordinated to
the Aon Delaware subordinated debt securities or Aon Delaware subordinated debt guarantees in rights of payment or upon liquidation. (Section&nbsp;1.01 of the Aon Delaware subordinated debt
indenture) </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Because
of the subordination provisions described above, some of the general creditors of Aon Delaware or Aon&nbsp;plc, as the case may be, may recover proportionately more than
holders of the Aon Delaware subordinated debt securities or Aon Delaware subordinated debt guarantees if the assets of Aon&nbsp;plc or Aon Delaware, as the case may be, are distributed as a result
of insolvency or bankruptcy. The Aon Delaware subordinated debt indenture provides that the subordination provisions will not apply to cash, properties and securities held in trust pursuant to the
satisfaction and discharge and the legal defeasance provisions of the Aon Delaware subordinated debt indenture. (Section&nbsp;16.03 of the Aon Delaware subordinated debt indenture) See
"&#151;Defeasance" for additional information regarding the legal defeasance provisions affecting the subordinated debt. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will set forth (or incorporate by reference) the approximate amount of senior indebtedness outstanding for each of Aon Delaware and Aon&nbsp;plc as of a recent date in any
prospectus supplement under which we offer to sell Aon Delaware subordinated debt securities. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2><B> Guarantees  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under each guarantee, the applicable guarantor will unconditionally guarantee the due and punctual payment of the principal, interest
(if any), premium (if any) and all other amounts due on the applicable debt securities when the same shall become due and payable, whether at maturity, pursuant to mandatory or optional redemption or
repayments, by acceleration or otherwise, in each case after any applicable grace periods or notice requirements, according to the terms of the applicable debt securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
obligations of each guarantor under the guarantees will be unconditional, regardless of the enforceability of the applicable debt securities, and will not be discharged until all
obligations under those debt securities and the applicable indenture are satisfied. Holders of the applicable debt securities may proceed directly against the guarantor under the applicable guarantee
if an event of default affecting those debt securities occurs without first proceeding against the issuer. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>26</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2><B> Conversion Rights  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An applicable prospectus supplement will describe the terms and conditions, if any, on which debt securities being offered are
convertible into our Class&nbsp;A Ordinary Shares or other securities. Such terms will include the conversion price, the conversion period, provisions as to whether conversion will be at the
issuer's option or the option of the holder, the events requiring an adjustment of the conversion price and provisions affecting conversion in the event of the redemption of those debt securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Regarding the Trustee  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The issuers have commercial deposits and custodial arrangements with The Bank of New York&#151;Mellon Trust Company, N.A., or
"BNYM," and may have borrowed money from BNYM in the normal course of business. The issuers may enter into similar or other banking relationships with BNYM in the future in the normal course of
business. In addition, the issuers have provided brokerage and other insurance services in the ordinary course of their respective businesses for BNYM. BNYM may also act as trustee with respect to
other debt securities one or both of the issuers have issued. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BNYM
will be serving as the trustee under the senior indentures and the subordinated indentures. Consequently, if an actual or potential event of default occurs with respect to either
the senior debt securities or the subordinated debt securities, BNYM may be considered to have a conflicting interest for purposes of the Trust Indenture Act. In that case, BNYM may be required to
resign under one or
more indentures, and the applicable issuer and, if applicable, the applicable guarantor would be required to appoint a successor trustee. For this purpose, a "potential" event of default means an
event that would be an event of default if the requirements for giving us default notice or for the default having to exist for a specific period of time were disregarded. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B> Governing Law  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The debt securities, the guarantees and the indentures will be governed by and construed in accordance with the laws of the State of
New York, except that, as the indentures specify, the subordination provisions of each series of Aon&nbsp;plc subordinated debt securities, any Aon Delaware subordinated debt guarantee and the
Aon&nbsp;plc subordinated indenture, as they apply to Aon&nbsp;plc, will be governed by and construed in accordance with the laws of England and Wales (other than the appointment of any
attorney-in-fact, which shall be governed by the laws of the State of New York). </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="di79802_description_of_preference_shares"> </A>
<A NAME="toc_di79802_1"> </A>
<BR></FONT><FONT SIZE=2><B>  DESCRIPTION OF PREFERENCE SHARES    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In this description, references to "Aon," the "company," "we," "us" or "our" refer only to Aon&nbsp;plc and not to any of our
subsidiaries or affiliates. Also, in this section, references to "holders" mean those who own preference shares registered in their own names, on the books that our registrar or we maintain for this
purpose, and not those who own beneficial interests in preference shares registered in "street name" or in shares issued in book-entry form and held through one or more depositaries. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
description set forth below is only a summary and is not complete. For more information regarding the preference shares which may be offered by this prospectus, please refer to the
documents incorporated by reference in this prospectus, the applicable prospectus supplement or supplements, our articles of association ("Articles"), which are incorporated by reference as an exhibit
to the registration statement of which this prospectus forms&nbsp;a part, and any certificate of designations or other instrument establishing a series of preference shares, which will be filed with
the SEC as an exhibit to or incorporated by reference in the registration statement at or prior to the time of the issuance of that series of preference shares. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>27</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
Articles authorize us to issue preference shares, in one or more series, with the number of shares of each series and the rights, preferences and limitations of each series to be
determined by or pursuant to the authorization of our board of directors at the time of issue of the relevant preference shares. Our board of directors has been authorized to allot and issue up to
25,000,000 preference shares all of which remain authorized for allotment and issuance. This authority will expire on March&nbsp;29, 2017, which is the date five years from the date we adopted our
current Articles. Our preference shares will likely be afforded preferences regarding dividends and liquidation rights over our Class&nbsp;A Ordinary Shares and may be issued as redeemable shares,
with all such other rights, terms and conditions to be determined by or pursuant to the authorization of the board of directors of Aon&nbsp;plc at the time of issue of the relevant preference
shares. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will include the specific terms of each series of the preference shares being offered in an applicable prospectus supplement. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="di79802_description_of_class_a_ordinary_shares"> </A>
<A NAME="toc_di79802_2"> </A>
<BR></FONT><FONT SIZE=2><B>  DESCRIPTION OF CLASS A ORDINARY SHARES    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In this description, references to "Aon," the "company," "we," "us" or "our" refer only to Aon&nbsp;plc and not to any of our
subsidiaries or affiliates. Also, in this section, references to "holders" mean those who own ordinary shares of Aon registered in their own names, on the books that the registrar or we maintain for
this purpose, and not those who own beneficial interests in ordinary shares registered in street name or in shares issued in book-entry form and held through one or more depositaries. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
description of our Class&nbsp;A Ordinary Shares is incorporated into this prospectus by reference to the Current Report on Form&nbsp;8-K12B filed with the SEC on April&nbsp;2,
2012. Our Class&nbsp;A Ordinary Shares are listed on the New York Stock Exchange under the symbol "AON." </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For
more information regarding the Class&nbsp;A Ordinary Shares which may be offered by this prospectus, please refer to the applicable prospectus supplement or supplements, our
Articles, which are incorporated by reference as an exhibit to the registration statement of which this prospectus forms&nbsp;a part, and any other instrument relating to our ordinary shares filed
with the SEC as an exhibit to or incorporated by reference in the registration statement at or prior to the time of the issuance of our Class&nbsp;A Ordinary Shares. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
Articles authorize us to allot and issue Class&nbsp;A Ordinary Shares, and to grant rights to subscribe for or to convert or exchange any security into or for Class&nbsp;A
Ordinary Shares, which shall have the same rights, preferences and limitations as the existing Class&nbsp;A Ordinary Shares. Our board has been authorized to issue up to 415,000,000 Class&nbsp;A
Ordinary Shares in addition to the Class&nbsp;A Ordinary Shares issued in connection with the Redomestication. Of this amount, 412,365,479 shares remain
authorized for allotment and issuance. This authority will expire on March&nbsp;29, 2017, which is the date five years from the date we adopted our current Articles. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="di79802_description_of_share_purchase___des02628"> </A>
<A NAME="toc_di79802_3"> </A>
<BR></FONT><FONT SIZE=2><B>  DESCRIPTION OF SHARE PURCHASE CONTRACTS<BR>  AND SHARE PURCHASE UNITS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In this description, references to "Aon," the "company," "we," "us" or "our" refer only to Aon&nbsp;plc and not to any of our
subsidiaries. We may issue share purchase contracts, representing contracts obligating holders to purchase from us, and obligating us to sell to the holders, a specified number of our Class&nbsp;A
Ordinary Shares at a future date or dates. The price per share and the number of our Class&nbsp;A Ordinary Shares may be fixed at the time the share purchase contracts are issued or may be
determined by reference to a specific formula set forth in the share purchase contracts. The share purchase contracts may be issued separately or as a part of share purchase units consisting of a
share </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>28</FONT></P>

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<A NAME="page_di79802_1_29"> </A>

<P style="font-family:times;"><FONT SIZE=2>purchase
contract and, as security for the holder's obligations to purchase our Class&nbsp;A Ordinary Shares under our Class&nbsp;A Ordinary Shares purchase
contracts:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>Aon&nbsp;plc senior debt securities or Aon&nbsp;plc subordinated debt securities; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>preference shares; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>debt obligations of third parties, including Aon Delaware debt securities and U.S. Treasury securities. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
share purchase contracts may require us to make periodic payments to the holders of the share purchase units or vice versa, and such payments may be unsecured or prefunded on some
basis. The
share purchase contracts may require holders to secure their obligations in a specified manner and, in certain circumstances, we may deliver newly issued prepaid share purchase contracts upon release
to a holder of any collateral securing such holder's obligations under the original share purchase contract. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An
applicable prospectus supplement will describe the terms of any share purchase contracts or share purchase units and, if applicable, prepaid share purchase contracts. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="di79802_plan_of_distribution"> </A>
<A NAME="toc_di79802_4"> </A>
<BR></FONT><FONT SIZE=2><B>  PLAN OF DISTRIBUTION    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We or Aon Delaware may sell the securities covered by this prospectus in any of the following ways (or in any
combination):</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>through underwriters, dealers or remarketing firms; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>directly to one or more purchasers, including to a limited number of institutional purchasers; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>through agents. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any
such dealer or agent, in addition to any underwriter, may be deemed to be an underwriter within the meaning of the Securities Act of 1933, as amended (the "Securities Act"). Any
discounts or commissions received by an underwriter, dealer, remarketing firm or agent on the sale or resale of securities may be considered by the SEC to be underwriting discounts and commissions
under the Securities Act. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
addition, we or Aon Delaware may enter into derivative transactions with third parties, or sell securities not covered by this prospectus to third parties in privately negotiated
transactions. If an applicable prospectus supplement so indicates, in connection with such a transaction, the third parties may, pursuant to this prospectus and that applicable prospectus supplement,
sell securities covered by this prospectus and that applicable prospectus supplement. If so, the third party may use securities borrowed from us or Aon Delaware or others to settle such sales and may
use securities received from
us to close any related short positions. We or Aon Delaware may also loan or pledge securities covered by this prospectus and an applicable prospectus supplement to third parties, who may sell the
loaned securities or, in an event of default in the case of a pledge, sell the pledged securities covered by this prospectus and that applicable prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
terms of the offering of the securities with respect to which this prospectus is being delivered will be set forth in the applicable prospectus supplement or supplements and will
include, among other things:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the type of and terms of the securities offered; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the price of the securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the proceeds to us from the sale of the securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the names of the securities exchanges, if any, on which the securities are listed; </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>29</FONT></P>

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<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the names of any underwriters, dealers, remarketing firms or agents and the amount of securities underwritten or purchased
by each of them; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any over-allotment options under which underwriters may purchase additional securities from us or Aon Delaware; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any underwriting discounts, agency fees or other compensation to underwriters or agents; and </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>any discounts or concessions which may be allowed or reallowed or paid to dealers. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
underwriters are used in the sale of securities, those securities will be acquired by the underwriters for their own account and may be resold from time to time in one or more
transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. The securities may be offered to the public either through
underwriting syndicates represented by managing underwriters or directly by one or more underwriters acting alone. Unless otherwise set forth in an applicable prospectus supplement, the obligations of
the underwriters to purchase the securities described in an applicable prospectus supplement will be subject to certain conditions precedent, and the underwriters will be obligated to purchase all of
those securities if any are purchased by them. Any public offering price and any discounts or concessions allowed or reallowed or paid to dealers may be changed from time to time. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
the dealers acting as principals are used in the sale of any securities, those securities will be acquired by the dealers, as principals, and may be resold from time to time in one or
more transactions at varying prices to be determined by the dealer at the time of resale. The name of any dealer and the terms of the transactions will be set forth in an applicable prospectus
supplement with respect to the securities being offered. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Securities
may also be offered and sold, if so indicated in an applicable prospectus supplement in connection with a remarketing upon their purchase, in accordance with a redemption or
repayment pursuant to their terms, or otherwise, by one or more firms, which we refer to as the "remarketing firms," acting as principals for their own accounts or as our agents, as applicable. Any
remarketing firm will be identified and the terms of its agreement, if any, with us or Aon Delaware and its compensation will be described in an applicable prospectus supplement. Remarketing firms may
be deemed to be underwriters, as that term is defined in the Securities Act in connection with the securities remarketed thereby. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
securities may be sold directly by us or Aon Delaware or through agents designated by us from time to time. In the case of securities sold directly by us or Aon Delaware, no
underwriters or agents would be involved. Any agents involved in the offer or sale of the securities in respect of which this prospectus is being delivered, and any commissions payable by us or Aon
Delaware to such agents, will be set forth in an applicable prospectus supplement. Unless otherwise indicated in an applicable prospectus supplement, any such agent will be acting on a best efforts
basis for the period of its appointment. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
or Aon Delaware may authorize agents, underwriters or dealers to solicit offers by certain specified institutions to purchase the securities to which this prospectus and the
applicable prospectus supplement or supplements relate from us at the public offering price set forth in an applicable prospectus supplement plus, if applicable, accrued interest, pursuant to delayed
delivery contracts providing for payment and delivery on a specified date in the future. Those contracts will be subject only to those conditions set forth in an applicable prospectus supplement, and
an applicable prospectus supplement will set forth the commission payable for solicitation of those contracts. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Agents,
dealers, underwriters and remarketing firms may be entitled, under agreements entered into with us, Aon Delaware or both, to indemnification by us, Aon Delaware or both against
certain civil liabilities, including liabilities under the Securities Act, or to contribution to payments they may be </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>30</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>required
to make in respect thereof. Agents, dealers, underwriters and remarketing firms may be customers of, engage in transactions with, or perform services for us or our subsidiaries in the
ordinary course of business. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
otherwise indicated in an applicable prospectus supplement, all securities offered by this prospectus, other than our Class&nbsp;A Ordinary Shares, which are listed on the New
York Stock Exchange, will be new issues with no established trading market. We or Aon Delaware, as applicable, may elect to list any of the securities on one or more exchanges, but unless otherwise
specified in an applicable prospectus supplement, neither we nor Aon Delaware shall be obligated to do so. In addition, underwriters will not be obligated to make a market in any securities. No
assurance can be given regarding the activity of trading in, or liquidity of, any securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any
underwriter may engage in over-allotment, stabilizing transactions, short-covering transactions and penalty bids in accordance with Regulation&nbsp;M under the Exchange Act.
Over-allotment involves sales in excess of the offering size, which create a short position. Stabilizing transactions permit bids to purchase the underlying securities so long as the stabilizing bids
do not exceed a specified maximum. Short covering transactions involve purchases of the securities in the open market after the distribution is completed to cover short positions. Penalty bids permit
the underwriters to reclaim a selling concession from a dealer when the securities originally sold by the dealer are purchased in a covering transaction to cover short positions. Those activities may
cause the price of the securities to be higher than it would otherwise be. If commenced, the underwriters may discontinue any of the activities at any time. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="di79802_validity_of_securities"> </A>
<A NAME="toc_di79802_5"> </A>
<BR></FONT><FONT SIZE=2><B>  VALIDITY OF SECURITIES    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sidley Austin </FONT><FONT SIZE=2>LLP</FONT><FONT SIZE=2> will be requested to advise us with respect to the validity under New
York law of any securities that may be offered pursuant to this prospectus and one or more applicable prospectus supplements. Freshfields Bruckhaus Deringer&nbsp;LLP will be requested to advise us
with respect to the validity under English law of any securities that may be offered pursuant to this prospectus and one or more applicable prospectus supplements. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="di79802_experts"> </A>
<A NAME="toc_di79802_6"> </A>
<BR></FONT><FONT SIZE=2><B>  EXPERTS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The consolidated financial statements of Aon Corporation, as predecessor to Aon&nbsp;plc, incorporated by reference in Aon's Annual
Report (Form&nbsp;10-K) for the year ended December&nbsp;31, 2011, and the effectiveness of Aon Corporation's internal control over financial reporting as of December&nbsp;31, 2011 have been
audited by Ernst&nbsp;&amp; Young&nbsp;LLP, independent registered public accounting firm, as set forth in their reports thereon, incorporated by reference therein, and incorporated herein by
reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such reports given on the authority of such firm as experts in accounting and auditing. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>31</FONT></P>

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 </FONT> <FONT SIZE=2>
<A HREF="#bg79801a_main_toc">Table of Contents</A> </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><BR></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><div
style="width:100%;border-top:solid #000000 3.0pt;padding:0in 0in 0in 0in;font-size:3.0pt;"></div>
<div style="width:100%;border-top:solid #000000 1.0pt;padding:0in 0in 0in 0in;font-size:4.0pt;"></div> </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=4><B>&euro;  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=5><B>Aon&nbsp;plc  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=4><B>% Senior Notes due 2026<BR>
With a full and unconditional guarantee as to payment of<BR>
principal and interest by Aon Corporation  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=4><I>

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  </I></FONT><FONT SIZE=4><B>

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<BR>  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=3><B>PRELIMINARY PROSPECTUS SUPPLEMENT  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=3><I>

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 </I></FONT><FONT SIZE=3><B>

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<BR>  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=4><B>Credit Suisse<BR>
Barclays<BR>
Deutsche Bank  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B>May&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2014  </B></FONT></P>
 <p style="font-family:times;line-height:1pt;margin-left:18pt;"><font> </FONT> <FONT SIZE=2>
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&nbsp;&nbsp;&nbsp;
</font></p>
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<div style="width:100%;border-top:solid #000000 3.0pt;padding:0in 0in 0in 0in;font-size:4.0pt;"></div> </FONT></P>

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