Press Release Details

Thomson Announces Resumption of Share Repurchase Program

November 23, 2007 at 7:35 AM EST

STAMFORD, Conn., Nov. 23 /PRNewswire/ -- The Thomson Corporation (NYSE: TOC; TSX: TOC), a leading provider of information solutions to business and professional customers worldwide, today announced it has resumed its share repurchase program (normal course issuer bid). Under the current program, the company may repurchase up to 15 million of its common shares. Thomson temporarily suspended repurchases prior to the company's announcement of its proposed acquisition of Reuters Group PLC in May 2007.

(LOGO: http://www.newscom.com/cgi-bin/prnh/20020227/NYW014LOGO )

Thomson continues to expect to receive regulatory clearance for the Reuters transaction in the first quarter of 2008. While the regulatory review process continues, integration planning efforts associated with the acquisition are proceeding on course.

Thomson has entered into a pre-defined plan with its broker to allow for the repurchase of common shares at times when Thomson ordinarily would not be active in the market due to its own internal trading blackout periods, insider trading rules or otherwise. This plan was adopted in accordance with the requirements of applicable Canadian securities laws and Rule 10b5-1 under the U.S. Securities Exchange Act of 1934.

The Thomson Corporation

The Thomson Corporation (www.thomson.com) is a global leader in providing essential electronic workflow solutions to business and professional customers. With operational headquarters in Stamford, Conn., Thomson provides value-added information, software tools and applications to professionals in the fields of law, tax, accounting, financial services, scientific research and healthcare. The Corporation's common shares are listed on the New York and Toronto stock exchanges (NYSE: TOC; TSX: TOC).

ADDITIONAL INFORMATION

This document does not constitute an offer for sale of any securities or an offer or an invitation to purchase any such securities. Following satisfaction or waiver of the pre-conditions to the proposed Reuters transaction, documents relating to the proposed transaction will be furnished to or filed with the SEC. Shareholders are urged to read such documents regarding the proposed transaction if and when they become available, because they will contain important information. Shareholders will be able to obtain free copies of these documents, as well as other filings containing information about the companies, without charge, at the SEC's website at www.sec.gov, at the Canadian securities regulatory authorities' website at www.sedar.com and from Thomson. These documents will also be available for inspection and copying at the public reference room maintained by the SEC at 100 F Street, N.E., Washington, D.C. 20549, United States. For further information about the public reference room, call the SEC at +1 800-732-0330.


    Media Contact:                           Investor Contact:

    Fred Hawrysh                              Frank J. Golden
    Global Director,                          Vice President,
    External Communications                   Investor Relations
    (203) 539-8314                           (203) 539-8470
    fred.hawrysh@thomson.com                  frank.golden@thomson.com


SOURCE  The Thomson Corporation
    -0-                             11/23/2007
    /CONTACT:  Media: Fred Hawrysh, Global Director, External Communications,
+1-203-539-8314, fred.hawrysh@thomson.com, or Investors: Frank J. Golden, Vice
President, Investor Relations, +1-203-539-8470, frank.golden@thomson.com, both
of The Thomson Corporation/
    /Photo:  NewsCom: http://www.newscom.com/cgi-bin/prnh/20020227/NYW014LOGO
             AP Archive:  http://photoarchive.ap.org
             PRN Photo Desk, photodesk@prnewswire.com /
    /Web site:  http://www.thomson.com
                http://www.thetakeoverpanel.org.uk /
    (TOC TOC.)

CO:  The Thomson Corporation
ST:  Connecticut
IN:  FIN PUB CPR STW
SU:  SRP

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