RNS Number : 6284V

Thomson Reuters PLC

30 May 2008

TR-1: Notifications of Major Interests in Shares

Thomson Reuters Plc

1. Identity of the issuer or the underlying issuer

of existing shares to which voting rights are

attached:

2. Reason for notification (yes/no)

YES

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):______________

Caisse de dôt et placement du Quec

3. Full name of person(s)

subject to notification

obligation:

4. Full name of shareholder(s)

(if different from 3):

May 27, 2008

5. Date of transaction (and

date on which the threshold is

crossed or reached if

different):

May 29, 2008

6. Date on which issuer

notified:

3.22%

7. Threshold(s) that is/are

crossed or 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 use ISIN transaction

code

Number of shares Number of voting Number of shares Number of voting Percentage of voting

rights rights rights

5,592,828

5,592,828 6,011,028

Direct Indirect Direct Indirect

6,011, 3.22%

028

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument Expiration date Exercise/ conversion No. of voting rights Percentage of voting

period/date that may be acquired rights

(if the instrument

exercised/converted)

Total (A+B)

Number of voting rights Percentage of voting rights

6,011,028 3.22%

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 proxy holder: n/a

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

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

This information is provided by RNS

The company news service from the London Stock Exchange

END

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