February 4, 2009

Thomson Reuters PLC

Shareholder Preference Documentation

NEW YORK, NY - February 4, 2009 - Thomson Reuters (NYSE: TRI; TSX: TRI; LSE: TRIL; NASDAQ: TRIN) today announced that it has sent a letter to Thomson Reuters PLC shareholders regarding electronic and website communications.

A copy of the letter will be available shortly at the UKLA Document Viewing Facility of the Financial Services Authority at 25 The North Colonnade, London, E14 5HS, United Kingdom. The letter will also be available at www.thomsonreuters.com within the "Investor Relations" section of the website.

This notification is made in accordance with Listing Rules 9.6.1 and 9.6.3.

Contact:

Elizabeth Maclean

Assistant Company Secretary

Thomson Reuters PLC

elizabeth.maclean@thomsonreuters.com

Tel. no. 020 7542 6706