RNS Number : 8859J

Thomson Reuters PLC

10 December 2008

Thomson Reuters PLC

Notification of Transaction

NEW YORK, NY - December 10, 2008 - Thomson Reuters (NYSE: TRI; TSX: TRI; LSE: TRIL; NASDAQ: TRIN) today announced that The Woodbridge Company Limited engaged in the following transaction involving common shares of Thomson Reuters Corporation.

Date Type of Transaction Type of Security Number of Securities Price Per Security

December 9, 2008 Donation Common Shares 31,500 C$33.30

Thomson Reuters was notified of the above transaction on December 9, 2008.

Following this transaction, The Woodbridge Company Limited and other companies affiliated with it (together, *Woodbridge*) beneficially own 444,749,173 Thomson Reuters Corporation common shares, 7,998,812 Thomson Reuters PLC ordinary shares and 56,000 Thomson Reuters PLC American Depositary Shares (each representing six ordinary shares of Thomson Reuters PLC). Under the DLC structure, holders of Thomson Reuters Corporation common shares and Thomson Reuters PLC ordinary shares ordinarily vote together as a single decision-making body, including in the election of directors, and in that sense have voting interests in Thomson Reuters. Following this transaction, Woodbridge has a voting interest in Thomson Reuters of approximately 55%as at December 8, 2008 based on the aggregate issued share capital of Thomson Reuters Corporation and Thomson Reuters PLC. The Woodbridge Company Limited is the controlling shareholder of Thomson Reuters and certain of the Thomson Reuters non-executive directors are officers of Woodbridge. Thomson Reuters is voluntarily making a notification relating to securities of Thomson Reuters Corporation.

Contact:

David W. Binet

Secretary to the Board

Thomson Reuters

david.binet@thomsonreuters.com

+1 416.681.0474

This information is provided by RNS

The company news service from the London Stock Exchange

END

HOLFKKKNBBDDFBD