RNS Number : 0884E

Thomson Reuters PLC

23 September 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 Yes

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):

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

notification obligation:

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

from 3.): Abbey Life Assurance Company

Limited

Deutsche Bank Trust Company

Americas

Deutsche Asset Management

Investment GmbH

Deutsche Asset Management (Japan)

Limited

Deutsche Investment Management

Americas Inc.

DWS Investment S.A., Luxembourg

Tilney Investment Management

5. Date of the transaction (and date on which 19/09/2008

the threshold is crossed or reached if

different):

6. Date on which issuer notified: 22/09/2008

7. Threshold(s) that is/are crossed or Aggregate Direct and Indirect 5%

reached:

8. Notified details

A: Voting rights attached to shares

Class/type of shares Situation previous to the Triggering Resulting situation after the triggering transaction

if possible using transaction

the ISIN CODE

Number of Shares Number of Voting Number of shares Number of voting % of voting

Rights rights rights

Direct Indirect Direct Indirect

GB00B29MWZ99 8,347,185 8,347,185 9,199,834 8,996,663 203,171 4.98% 0.11%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument Expiration date Exercise/ Conversion Number of voting % of voting rights

Period/ Date rights that may be

acquired if the

instrument is

exercised/

converted.

Total (A+B)

Number of voting rights % of voting rights

9,199,834 5.09%

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

the financial instruments are effectively held, if applicable :

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will cease to hold:

12. Date on which proxy holder will cease to hold voting rights:

This information is provided by RNS

The company news service from the London Stock Exchange

END

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