TR-1: Notifications of Major Interests in Shares

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Thomson Reuters PLC

2. Reason for notification (yes/no)

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 

No

An event changing the breakdown of voting rights

No

Other (please specify):______________

No

3. Full name of person(s) subject to notification obligation:

The Woodbridge Company Limited

4. Full name of shareholder(s) (if different from 3):

N/A

5. Date of transaction (and date on which the threshold is crossed or reached if different):

25 March 2009

6. Date on which issuer notified:

26 March 2009

7. Threshold(s) that is/are crossed or reached:

9%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible use ISIN code

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of shares

Number of voting rights

Number of shares

Number of voting rights

Percentage of voting rights

Direct

Indirect

Direct

Indirect

Ordinary Shares

14,842,487

14,842,487

16,192,487

16,192,487

N/A

8.935%

N/A

American Depositary Shares (each representing six Ordinary Shares)

88,800

532,800

88,800

532,800

N/A

0.294%

N/A

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period/date 

No. of voting rights that may be acquired (if the instrument exercised/converted)

Percentage of voting rights

N/A

N/A

N/A

N/A

N/A

Total (A+B)

Number of voting rights

Percentage of voting rights

16,725,287

9.229%

Note: The disclosures in this section 8 relate only to holdings in Thomson Reuters PLC and not Thomson Reuters Corporation. However, under Thomson Reuters dual listed company structure, holders of Thomson Reuters Corporation common shares and Thomson Reuters PLC ordinary shares ordinarily vote together as a single decision-making body, including in the election of directors, and in that sense have voting interests in Thomson Reuters. See further section 13 (Additional Information) below.

9. Chain of controlled undertakings through which the voting rights and /or the financial instruments are effectively held, if applicable:

The Woodbridge Company Limited and other companies affiliated with it.

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

13. Additional information:

The Woodbridge Company Limited and other companies affiliated with it (together, "Woodbridge") also beneficially owned an aggregate of 438,418,486 Thomson Reuters Corporation common shares as at 25 March 2009. Under Thomson Reuters dual listed company structure, holders of Thomson Reuters Corporation common shares and Thomson Reuters PLC ordinary shares ordinarily vote together as a single decision-making body, including in the election of directors, and in that sense have voting interests in Thomson Reuters. Woodbridge had a voting interest in Thomson Reuters of approximately 55 per cent. based on the aggregate issued share capital of Thomson Reuters Corporation and Thomson Reuters PLC as at 25 March 2009.