REG-Jarislowsky, Fraser Limited Rule 8.3 - The Thomson Corporation

LONDON--(Business Wire)--
FORM 8.3

DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE

(Rule 8.3 of the Takeover Code)

1. KEY INFORMATION

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Name of person dealing (Note 1) JARISLOWSKY, FRASER LIMITED Investment Counsel
on behalf of the discretionary clients of the firm
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Company dealt in THE THOMSON CORPORATION
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Class of relevant security to which the COMMON SHARES ISIN: CA8849031056
dealings being disclosed relate (Note 2)
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Date of dealing APRIL 16, 2008
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2. INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a) Interests and short positions (following dealing) in the class of relevant
security dealt in (Note 3)

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Long Short
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Number (%) Number (%)
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(1) Relevant securities 19,869,886 3.11%
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(2) Derivatives (other than options)
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(3) Options and agreements to
purchase/sell
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Total 19,869,886 3.11%
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(b) Interests and short positions in relevant securities of the company, other
than the class dealt in (Note 3)

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Class of relevant security: Long Short
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Number (%) Number (%)
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(1) Relevant securities
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(2) Derivatives (other than options)
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(3) Options and agreements to
purchase/sell
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Total
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(c) Rights to subscribe (Note 3)

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Class of relevant security: Details
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3. DEALINGS (Note 4)

(a) Purchases and sales

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Purchase/sale Price per unit (Note 5)
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Purchase 300 37.48CAD
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Purchase 150 37.25CAD
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Purchase 50 37.15CAD
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Purchase 100 37.90CAD
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Purchase 400 37.92CAD
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Purchase 500 37.61CAD
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Purchase 665 37.7841CAD
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Purchase 5 38.18CAD
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Sale 5100 37.7414CAD
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Sale 5 38.14CAD
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Sale 90 37.60CAD
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(b) Derivatives transactions (other than options)

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Product name, Long/short (Note 6) Number of securities (Note 7) Price per unit (Note 5)
e.g. CFD
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(c) Options transactions in respect of existing securities

(i) Writing, selling, purchasing or varying

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Product name, Writing, Number of Exercise Type, e.g. Expiry Option money
e.g. call option selling, securities to price American, Date paid/received
purchasing, which the option European per unit (Note
varying etc. relates (Note 7) etc. 5)
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(ii) Exercising

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Product name, e.g. call option Number of securities Exercise price per unit (Note 5)
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(d) Other dealings (including new securities) (Note 4)

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4. OTHER INFORMATION

Agreements, arrangements or understandings relating to options or derivatives

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Full details of any agreement, arrangement or understanding between the person disclosing and any other
person relating to the voting rights of any relevant securities under any option referred to on this
form or relating to the voting rights or future acquisition or disposal of any relevant securities to
which any derivative referred to on this form is referenced. If none, this should be stated.
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NONE
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Is a Supplemental Form 8 attached? (Note 9) YES/NO

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Date of disclosure APRIL 17, 2008
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Contact name ERIN O'BRIEN
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Telephone number 01-514-842-2727
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If a connected EFM, name of offeree/offeror with which
connected
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If a connected EFM, state nature of connection (Note 10)
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Notes

The Notes on Form 8.3 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk

Jarislowsky, Fraser Limited

Copyright Business Wire 2008