December 31, 2008

Thomson Reuters PLC  - Voting Rights and Capital

Update for December 2008

NEW YORK, NY - December 31, 2008 - Thomson Reuters (NYSE: TRI; TSX: TRI; LSE: TRIL; NASDAQ: TRIN) hereby notifies the market in conformity with Disclosure and Transparency Rule 5.6.1 that the issued capital of Thomson Reuters PLC consists of 181,229,241 ordinary shares of 25 pence each as of December 31, 2008. Thomson Reuters PLC holds no shares in Treasury.

Therefore, the total number of voting rights in Thomson Reuters PLC is 181,229,241 ordinary shares. 

The above figure (181,229,241) may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, Thomson Reuters PLC under the FSA's Disclosure and Transparency Rules.

Contact:

Elizabeth Maclean

Assistant Company Secretary

Thomson Reuters PLC

elizabeth.maclean@thomsonreuters.com

Tel. no. 020 7542 6706