EX-8.1 7 d328609dex81.htm LIST OF SUBSIDIARIES

Exhibit 8.1

Our principal subsidiaries as of December 31, 2011, are listed below. All other subsidiaries, if considered in the aggregate, would not constitute a significant subsidiary under Rule 1-02(w) of Regulation S-X.

COMPANY NAME |  | JURISDICTION UNDER WHICH ORGANISED
United States |  |
24/7 Media US, Inc. |  | Delaware
24/7 Media, Inc. |  | Delaware
A. Eicoff & Company, Inc. |  | Delaware
Burson-Marsteller, LLC |  | Delaware
G2 Worldwide Inc. |  | New York
Glover Park Group LLC |  | Delaware
Grey Global Group Inc. |  | Delaware
Grey Healthcare Group Inc. |  | New York
Group M Worldwide, Inc. |  | Delaware
I-Behavior Inc. |  | Delaware
J. Walter Thompson Company |  | Delaware
J. Walter Thompson U.S.A., Inc. |  | Delaware
KnowledgeBase Marketing Inc. |  | Delaware
Landor Ohio LLC |  | Delaware
Landor, LLC |  | Delaware
Lightspeed Online Research LLC |  | Delaware
Marketing and Planning Systems LLC |  | Delaware
Maxus Communications LLC |  | Delaware
Mediacom Worldwide Inc. |  | Delaware
Mediaedge:CIA LLC |  | Delaware
Millward Brown, Inc. |  | Illinois
Mindshare USA, LLC |  | New York
Ogilvy CommonHealth Worldwide LLC |  | Delaware
Ogilvy Healthworld, LLC |  | Delaware
Ogilvy Public Relations Worldwide, Inc. |  | Delaware
OgilvyOne, LLC |  | Delaware
Possible Worldwide Inc |  | California
Public Strategies, Inc |  | Texas
Sudler & Hennessey, LLC |  | Delaware
TeamDetroit, Inc. |  | Delaware
The Ogilvy Group, Inc. |  | Delaware
TNS Custom Research, Inc |  | Pennsylvania
VML, Inc. |  | Missouri
WPP Finance Square LLC |  | Delaware
WPP Group U.S. Finance Corp. |  | Delaware

COMPANY NAME |  | JURISDICTION UNDER WHICH ORGANISED
WPPIH 2001, Inc |  | Delaware
Wunderman Worldwide, LLC |  | Nevada
Young & Rubicam Inc |  | Delaware
Non-US |  |
Mediacom Australia Pty Limited |  | Australia
WPP Group Services SNC |  | Belgium
J Walter Thompson Publicidade Ltda |  | Brazil
Newdesign Participações Ltda |  | Brazil
Y&R Propaganda Ltda |  | Brazil
Mediacom Canada |  | Canada
GroupM (Shanghai) Advertising Co. Ltd |  | China
J.Walter Thompson Bridge Advertising Co. Ltd. |  | China
Kinetic Advertising (Shanghai) Co. Ltd |  | China
Kantar SAS |  | France
KR MEDIA France SAS |  | France
Taylor Nelson Sofres SAS |  | France
Advanced Techniques Group (ATG) GmbH |  | Germany
Commarco GmbH |  | Germany
Kantar Health GmbH |  | Germany
MEC GmbH |  | Germany
MediaCom Agentur für Media-Beratung GmbH |  | Germany
MindShare GmbH |  | Germany
TNS Infratest GmbH |  | Germany
MindShare Communications Limited |  | Hong Kong
GroupM Media India Pvt Ltd |  | India
Hindustan Thompson Associates Private Limited |  | India
Ogilvy & Mather Pvt Ltd |  | India
CIA Medianetwork Club Srl |  | Italy
CIA Medianetwork Milano Srl |  | Italy
Mediacom Italia Srl |  | Italy
Mindshare SpA |  | Italy

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COMPANY NAME |  | JURISDICTION UNDER WHICH ORGANISED
WPP Luxembourg Gamma Four Sarl |  | Luxembourg
WPP Luxembourg Gamma Sarl |  | Luxembourg
WPP Luxembourg Sarl |  | Luxembourg
JWT México, S.R.L. de C.V. |  | Mexico
Berkeley Square Holding BV |  | Netherlands
GroupM B.V. |  | Netherlands
Luxembourg Finance Gamma CV |  | Netherlands
MindShare B.V. |  | Netherlands
Taylor Nelson Sofres BV |  | Netherlands
Kantar Media S.A. |  | Spain
Mediacom Iberia SA |  | Spain
Mindshare Spain SA |  | Spain
Vinizius Young & Rubicam SL |  | Spain
Mediaedge:cia Taiwan Ltd. |  | Taiwan
Allan Burrows Limited |  | United Kingdom
Enduring Organisation |  | United Kingdom
Enduring Organisation Three |  | United Kingdom
Flexible Organisation |  | United Kingdom
Group Activation Ltd |  | United Kingdom
J. Walter Thompson Group Limited |  | United Kingdom
Kantar Media UK Ltd |  | United Kingdom
Kinetic Worldwide Limited |  | United Kingdom
Lightspeed Research Ltd |  | United Kingdom
MediaCom UK Limited |  | United Kingdom

COMPANY NAME |  | JURISDICTION UNDER WHICH ORGANISED
Mediaedge:CIA Worldwide Limited |  | United Kingdom
Millward Brown UK Limited |  | United Kingdom
Mindshare Media UK Limited |  | United Kingdom
Ogilvy & Mather Group (Holdings) Limited |  | United Kingdom
Ogilvyone Worldwide Limited |  | United Kingdom
Premiere Group Holdings Limited |  | United Kingdom
Prophaven Limited |  | United Kingdom
RLM Finsbury Limited |  | United Kingdom
TNS Group Holdings Limited |  | United Kingdom
TNS UK Limited |  | United Kingdom
WPP 2005 Limited |  | United Kingdom
WPP 2008 Limited |  | United Kingdom
WPP ATTICUS |  | United Kingdom
WPP Finance (UK) |  | United Kingdom
WPP Finance Co. Limited |  | United Kingdom
WPP Marketing Communications Spain |  | United Kingdom
WPP No. 2337 Limited |  | United Kingdom
WPP Pearls Limited |  | United Kingdom
WPP Unicorn Limited |  | United Kingdom
Young & Rubicam Group Limited |  | United Kingdom

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