RNS Number:7145S

Thomson Reuters PLC

21 April 2008

Transaction in Thomson Reuters shares

NEW YORK, NY, April 21, 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 that 775,000 ordinary

shares of Thomson Reuters PLC were purchased by Thomson Reuters Corporation on

April 18, 2008. The shares were purchased in accordance with the previously

announced pre-defined irrevocable agreement with its broker and represented the

first purchase under the proposed buyback program of up to US$500 million over

the course of the year. The average price paid was 1533.237 pence per share. The

highest price per share paid was 1565 pence and the lowest price per share paid

was 1498 pence.

As of April 18, 2008, Thomson Reuters PLC had 194,107,278 ordinary shares

outstanding. All of the shares purchased under the buyback program will be

transferred to Thomson Reuters PLC for cancellation.

This information is provided by RNS

The company news service from the London Stock Exchange

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