Transaction in Own Shares

Caledonia Investments PLC
28 September 2007



Caledonia Investments plc

Transactions in Own Shares


Caledonia Investments plc (the 'Company') announces that it has today given an
irrevocable instruction to JPMorgan Cazenove to purchase its ordinary shares
under the authority to purchase shares approved by shareholders on 19 July 2007.
Any shares purchased will be held in treasury.

The instruction is valid from today until 27 November 2007, the date when the
Company will announce its half-yearly financial report for the year ending 31
March 2008.

Any purchases will be effected within certain pre-set parameters, and in
accordance with both the Company's general authority to purchase its shares and
Chapter 12 of the Listing Rules and any trading decisions will be made by
JPMorgan Cazenove independently of, and uninfluenced by, the Company.

The Company confirms that it currently has no Company unpublished price
sensitive information.


                                                               28 September 2007

Enquiries:

Caledonia Investments plc           020 7802 8080
Tim Ingram

College Hill Associates             020 7457 2020
Tony Friend
Roddy Watt



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