Transaction in Own Shares

Caledonia Investments plc

Transaction in own shares

Caledonia Investments plc ("Caledonia") announces that on 19 December 2011 it purchased 10,000 of its own ordinary shares of 5p each at an average price of 1352.73 pence per share. The purchased shares will be cancelled.

Following the above purchase of shares, Caledonia's issued share capital includes 57,951,551 ordinary shares of 5p each with voting rights.

For further information, please contact:

Graeme P Denison

Company Secretary

Caledonia Investments plc

Telephone +44 20 7802 8080

19 December 2011

END