Blocklisting Interim Review

Caledonia Investments PLC
03 July 2006

                        BLOCKLISTING SIX MONTHLY RETURN



Information provided on this form must be typed or printed electronically.



To:  The FSA



Date: 3 July 2006



1. Name of applicant:


Caledonia Investments plc



2. Name of scheme


Caledonia Investments plc Executive Share Option Scheme



3. Period of return:


From      1 January 2006        To     30 June 2006



4. Balance under scheme from previous return:


379,781 ordinary 5p shares



5. The amount by which the block scheme has been increased, if the scheme has
been increased since the date of the last return


Not applicable



6. Number of securities issued/allotted under scheme during period:


Nil



7 Balance under scheme not yet issued/allotted at end of period


379,781 ordinary 5p shares



8. Number and class of securities originally listed and the date of admission


683,000 ordinary 5p shares originally listed on 4 August 1995 under A/3627/1995



9. Total number of securities in issue at the end of the period


64,105,796 (excluding 100,000 ordinary shares held in treasury)




Name of contact            G P Denison


Address of contact         Cayzer House

                           30 Buckingham Gate

                           London SW1E 6NN


Telephone number of contact             020 7802 8080



Signed by:  G P Denison

Company Secretary

 for and on behalf of



Name of applicant Caledonia Investments plc



If you knowingly or recklessly give false or misleading information you may be
liable to prosecution.




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