Blocklisting Interim Review

Caledonia Investments PLC
02 January 2008


                        BLOCK LISTING SIX MONTHLY RETURN


INFORMATION PROVIDED ON THIS FORM MUST BE TYPED OR PRINTED ELECTRONICALLY AND 
PROVIDED TO AN RIS

Date: 02 January 2008


Name of applicant:                                         Caledonia Investments plc

Name of scheme:                                            Caledonia Investments plc Executive Share Option Scheme

Period of return:                           From:          01 July 2007           To:        31 December 2007

Balance of unallotted securities under scheme(s) from      379,781 ordinary 5p shares
previous return:

Plus:  The amount by which the block scheme(s) has been    Nil
increased since the date of the last return (if any
increase has been applied for):

Less:  Number of securities issued/allotted under scheme   Nil
(s) during period (see LR3.5.7G):

Equals:  Balance under scheme(s) not yet issued/allotted   379,781 ordinary 5p shares
at end of period:


Name of contact:                                           G P Denison, Company Secretary

Telephone number of contact:                               020 7802 8080



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