<SEC-DOCUMENT>0001104659-14-042035.txt : 20140528
<SEC-HEADER>0001104659-14-042035.hdr.sgml : 20140528
<ACCEPTANCE-DATETIME>20140528170029
ACCESSION NUMBER:		0001104659-14-042035
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20140528
DATE AS OF CHANGE:		20140528
EFFECTIVENESS DATE:		20140528

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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07933
		FILM NUMBER:		14873413

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>a14-13758_1defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>


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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman">&nbsp;</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">UNITED   STATES</font></b></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></b></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington, D.C. 20549</font></b></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="4" face="Times New Roman" style="font-size:14.0pt;font-weight:bold;">SCHEDULE 14A</font></b></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Proxy   Statement Pursuant to Section 14(a) of<br>   the Securities Exchange Act of 1934 (Amendment No. &nbsp;&nbsp;&nbsp;&nbsp;)</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Filed by the Registrant&nbsp;&nbsp;</font><font face="Wingdings">x</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Filed by a Party other than the   Registrant</font>&nbsp;&nbsp;<font face="Wingdings">o</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the appropriate box:</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>
<td width="94%" colspan="3" valign="top" style="padding:0in .7pt 0in .7pt;width:94.96%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Preliminary Proxy Statement</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>
<td width="94%" colspan="3" valign="top" style="padding:0in .7pt 0in .7pt;width:94.96%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Confidential, for   Use of the Commission Only (as permitted by Rule 14a-6(e)(2))</font></b></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>
<td width="94%" colspan="3" valign="top" style="padding:0in .7pt 0in .7pt;width:94.96%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Definitive Proxy Statement</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">x</font></p>    </td>
<td width="94%" colspan="3" valign="top" style="padding:0in .7pt 0in .7pt;width:94.96%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Definitive Additional Materials</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>
<td width="94%" colspan="3" valign="top" style="padding:0in .7pt 0in .7pt;width:94.96%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Soliciting Material under &#167;240.14a-12</font></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">AON   PLC</font></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Name   of Registrant as Specified In Its Charter)</font></p>    </td>   </tr>
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<td width="100%" colspan="4" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="100%" colspan="4" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:100.0%;">
<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="100%" colspan="4" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:100.0%;">
<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Name   of Person(s) Filing Proxy Statement, if other than the Registrant)</font></p>    </td>   </tr>
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<td width="100%" colspan="4" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="100%" colspan="4" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Payment of Filing Fee (Check the   appropriate box):</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">x</font></p>    </td>
<td width="94%" colspan="3" valign="top" style="padding:0in .7pt 0in .7pt;width:94.96%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">No fee required.</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>
<td width="94%" colspan="3" valign="top" style="padding:0in .7pt 0in .7pt;width:94.96%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Fee computed on table below per   Exchange Act Rules 14a-6(i)(1) and 0-11.</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="4%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:4.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)</font></p>    </td>
<td width="90%" valign="top" style="padding:0in .7pt 0in .7pt;width:90.3%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title of each class of securities to   which transaction applies:</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="4%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:4.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="90%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:90.3%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="4%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:4.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)</font></p>    </td>
<td width="90%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:90.3%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Aggregate number of securities to   which transaction applies:</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="90%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:90.3%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="4%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:4.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)</font></p>    </td>
<td width="90%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:90.3%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Per unit price or other underlying   value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth   the amount on which the filing fee is calculated and state how it was   determined):</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="4%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:4.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="90%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:90.3%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="4%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:4.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(4)</font></p>    </td>
<td width="90%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:90.3%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Proposed maximum aggregate value of   transaction:</font></p>    </td>   </tr>
<tr>
<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="4%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:4.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="90%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:90.3%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="4%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:4.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(5)</font></p>    </td>
<td width="90%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:90.3%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Total fee paid:</font></p>    </td>   </tr>
<tr>
<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="4%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:4.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="90%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:90.3%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>
<td width="94%" colspan="3" valign="top" style="padding:0in .7pt 0in .7pt;width:94.96%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Fee paid previously with preliminary   materials.</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>
<td width="94%" colspan="3" valign="top" style="padding:0in .7pt 0in .7pt;width:94.96%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check box if any part of the fee is   offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing   for which the offsetting fee was paid previously. Identify the previous   filing by registration statement number, or the Form or Schedule and the date   of its filing.</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.36%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)</font></p>    </td>
<td width="90%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:90.6%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Amount Previously Paid:</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.36%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="90%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:90.6%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.36%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)</font></p>    </td>
<td width="90%" colspan="2" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:90.6%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Form, Schedule or Registration   Statement No.:</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.36%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="90%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:90.6%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.36%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)</font></p>    </td>
<td width="90%" colspan="2" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:90.6%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Filing Party:</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.36%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="90%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:90.6%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.36%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(4)</font></p>    </td>
<td width="90%" colspan="2" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:90.6%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date Filed:</font></p>    </td>   </tr>
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<td width="5%" valign="top" style="padding:0in .7pt 0in .7pt;width:5.04%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.36%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="90%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:90.6%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="38" style="border:none;"></td>
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<td width="675" style="border:none;"></td>   </tr> </table>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
</div>
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<br clear="all" style="page-break-before:always;">
<div>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dear Fellow Aon Shareholder:</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">As outlined in our proxy statement mailed on May&nbsp;5, 2014 for our Annual Meeting of Shareholders to be held on June&nbsp;24, 2014, we are requesting that you approve the amended Aon plc 2011 Incentive Compensation Plan.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In May&nbsp;2011, we received shareholder approval of 25 million shares for employee stock awards under the 2011 Plan.&#160; The plan was estimated to provide three years of awards, and we held our commitment to manage share issuance to cover a three year period.&#160; There are approximately 8 million shares remaining under the current 2011 Plan.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In 2014, we are requesting shareholder approval for a lesser total of 17 million shares under the amended 2011 Plan.&#160; This amount includes the 8 million shares currently remaining plus an additional &nbsp;9 million shares.&#160; Similar to the original plan, the 17 million shares are expected to cover a minimum of three years of awards, which assumes achievement of maximum financial performance.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The timing of the request is in-line with industry best practices for companies to solicit shareholder approval every one to three years, and the amount is in line with best practice to request approval of a stock pool sufficient to cover a one- to three-year time period.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Our compensation programs have not changed since the 2011 Plan was approved.&#160; Total spend on granted awards has held flat during the current plan period (2012 to 2014).&#160; Share issuance and share dilution as a percent of outstanding shares has declined and is expected to continue to decline as a result of strong financial performance and stock price appreciation.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">We recognize the significance of equity dilution to our shareholders.&#160; We believe Aon&#146;s programs have been successful at driving financial results, and they are critical to Aon&#146;s success in attracting and retaining key talent and motivating its senior leaders to achieve superior performance.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Equity compensation aligns management interests with shareholder interests, as our largest programs are based on adjusted pretax income and adjusted multi-year EPS performance.&#160; Key programs have been successful in driving substantial increases in both adjusted operating margin (+490 bps) and adjusted earnings per share (+14% CAGR) from 2006 to 2013, as well as record free cash flow from operations in 2013.&#160; In addition, Aon has consistently delivered double-digit Total Shareholder Return (TSR) for the last decade, significantly outperforming our competitors and the broader market:</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<table border="0" cellspacing="0" cellpadding="0" width="66%" style="border-collapse:collapse;margin-left:.5in;width:66.68%;">
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<td width="76%" valign="bottom" style="padding:0in 0in 0in 0in;width:76.78%;">
<p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
<td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.74%;">
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
<td width="18%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:18.0%;">
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">10-year<br>   Annualized&nbsp;TSR</font></b></p>    </td>
<td width="1%" valign="bottom" style="padding:0in 0in 0in 0in;width:1.48%;">
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>   </tr>
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<td width="76%" valign="top" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:76.78%;">
<p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Aon plc</font></p>    </td>
<td width="3%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:3.74%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="18%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;padding:0in 0in 0in 0in;width:18.0%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.5</font></p>    </td>
<td width="1%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:1.48%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">%</font></p>    </td>   </tr>
<tr>
<td width="76%" valign="top" style="padding:0in 0in 0in 0in;width:76.78%;">
<p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Marsh&nbsp;&amp; McLennan Companies,&nbsp;Inc.</font></p>    </td>
<td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.74%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="18%" valign="bottom" style="padding:0in 0in 0in 0in;width:18.0%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">0.2</font></p>    </td>
<td width="1%" valign="bottom" style="padding:0in 0in 0in 0in;width:1.48%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">%</font></p>    </td>   </tr>
<tr>
<td width="76%" valign="top" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:76.78%;">
<p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Willis Group Holdings plc</font></p>    </td>
<td width="3%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:3.74%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="18%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:18.0%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.0</font></p>    </td>
<td width="1%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:1.48%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">%</font></p>    </td>   </tr>
<tr>
<td width="76%" valign="top" style="padding:0in 0in 0in 0in;width:76.78%;">
<p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">S&amp;P 500</font></p>    </td>
<td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.74%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="18%" valign="bottom" style="padding:0in 0in 0in 0in;width:18.0%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.4</font></p>    </td>
<td width="1%" valign="bottom" style="padding:0in 0in 0in 0in;width:1.48%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">%</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt .5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">This approach has been effective as evidenced by our financial success over the long-term.&#160; We want to thank you for your continued support as a shareholder in Aon.&#160; Please support our efforts to build shareholder value by voting <b>FOR</b> approval to amend the Aon plc 2011 Incentive Plan.&#160; If you feel you cannot support this proposal, management would appreciate the opportunity to discuss further in advance of your vote.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Thank you.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Very truly yours,</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Greg Case</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">President and CEO</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
</div>
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