Transaction in Own Shares

Caledonia Investments PLC
28 September 2006


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 26 June 2006.
Any shares purchased will be held in treasury.

The instruction is valid from today until 21 November 2006, the date when the
Company will announce its interim results for the year ending 31 March 2007.

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.



                                                               28 September 2006



Enquiries:



Caledonia Investments plc            020 7802 8080
Tim Ingram

College Hill Associates              020 7457 2020
Tony Friend
Roddy Watt



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