RNS Number:3850T

Thomson Reuters PLC

29 April 2008

TR-1: notification of major interests in shares

1. Identity of the issuer or the Thomson Reuters PLC

underlying 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 X

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

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 Bear, Stearns International

notification obligation: Trading Ltd

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

4. Full name of shareholder(s) (if

different from 3.): --------------------

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

5. Date of the transaction (and date on 28/04/2008

which the threshold is crossed or reached --------------------

if different:

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

6. Date on which issuer notified: 29/04/2008

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

7. Threshold(s) that is/are crossed or Over 4%

reached: --------------------

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

8. Notified details:

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

A: Voting rights attached to shares

Class/type Situation previous to the Resulting situation after the trig. trans.

of shares Triggering transaction

if possible

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

ISIN CODE Shares Voting shares rights rights

Rights Direct Direct Indirect Direct

GB00B29MWZ99 6,064,286 6,064,286 8,165,619 8,165,619 4.207%

B: Financial Instruments

Resulting situation after the triggering transaction

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

financial date Conversion be acquired if the instrument is voting

instrument Period/ Date exercised/ converted. rights

Total (A+B)

Number of voting rights % of voting rights

8,165,619 4.207%

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

HOLBRGDSCBDGGIC