RNS Number:6235T

Thomson Reuters PLC

01 May 2008

Transaction in Thomson Reuters shares

NEW YORK, NY, May 1, 2008 - Thomson Reuters (NYSE: TRI; TSX: TRI; LSE: TRIL:

NASDAQ: TRIN), the world's leading source of intelligent information for

businesses and professionals in the financial, legal, tax and accounting,

scientific, healthcare, and media markets, today announced the re-purchase of

640,000 Thomson Reuters PLC ordinary shares on May 1, 2008. The average price

paid was 1632.49 pence per share. The highest price per share paid was 1674

pence and the lowest price per share paid was 1553 pence.

As of May 1, 2008, Thomson Reuters PLC had 193,808,110 ordinary shares

outstanding. The re-purchased shares of Thomson Reuters PLC will be cancelled.

This information is provided by RNS

The company news service from the London Stock Exchange

END

POSABMRTMMTMBRP