Thomson Reuters PLC 

Notification of Transactions

NEW YORK, NY - October 3, 2008 - Thomson Reuters (NYSE: TRI; TSX: TRI; LSE: TRIL; NASDAQ: TRIN) today announced that The Woodbridge Company Limited engaged in the following transactions involving purchases of Thomson Reuters Corporation common shares and sales of Thomson Reuters PLC ordinary shares. 

Thomson Reuters was notified of the above transactions on October 2, 2008.  The above transactions were effected with a director of The Woodbridge Company Limited.

Following these transactions, The Woodbridge Company Limited and other companies affiliated with it (together, "Woodbridge") beneficially own 444,780,676 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 these transactions, Woodbridge has a voting interest in Thomson Reuters of approximately 55% as at October 2, 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

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