RNS Number:9756S

Thomson Reuters PLC

23 April 2008

TR-1: notification of major interests in shares

1. Identity of the issuer or the underlying THOMSON REUTERS PLC

issuer of existing shares to which voting rights ---------------------

are attached:

-------------------------------

2. Reason for the notification (please tick the appropriate box or boxes)

-------------------------------------------- ------

An acquisition or disposal of voting rights

-------------------------------------------- -----

An acquisition or disposal of financial instruments which may result in

the acquisition of shares already issued to which voting rights are -----

attached

--------------------------------------------

An event changing the breakdown of voting rights

-------------------------------------------- -----

Other (please specify): New Exemption DTR 5.1.3 (4) & DTR 5.1.5 (1) X

SCHEME OF ARRANGEMENT ------

--------------------------------------------

3. Full name of person(s) subject to the Deutsche Bank AG

notification obligation: ---------------------

-------------------------------

4. Full name of shareholder(s) (if different from Deutsche Bank AG

3.):

Abbey Life Assurance Company Ltd

Deutsche Asset Management

Investment GmbH

Deutsche Asset Management (Japan)

Limited

Deutsche Investment Management

Americas Inc.

DWS Investment SA, Luxembourg

------------------------------- ---------------------

5. Date of the transaction (and date on which the n/a

threshold is crossed or reached if different): ---------------------

-------------------------------

6. Date on which issuer notified: 22 April 2008

------------------------------- ---------------------

7. Threshold(s) that is/are crossed or reached: 3 to 8%

------------------------------- ---------------------

8. Notified details:

------------------------------- --------------------

A: Voting rights attached to shares

Class/type Situation Resulting situation after the triggering

of shares previous to the transaction

Triggering

transaction

if possible

using the Number Number of Number of Number of voting % of voting

ISIN CODE of Voting shares rights ix rights

Shares Rights Direct x Indirect Direct Indirect

viii xi

GB0002369139 n/a n/a 16,660,879 70,898 897,013 8.54% 0.04%

B: Financial Instruments

Resulting situation after the triggering transaction xii

Type of Expiration Exercise/ Number of voting rights that may % of

financial date xiii Conversion be acquired if the instrument is voting

instrument Period/ Date exercised/ converted. rights

xiv

Total (A+B)

Number of voting rights % of voting rights

16,660,879 8.58%

9. Chain of controlled undertakings through which the voting rights and/or the

financial instruments are effectively held, if applicable xv:

This information is provided by RNS

The company news service from the London Stock Exchange

END

HOLBUGDSGXDGGIX