Transaction in Own Shares

Caledonia Investments plc

Transaction in own shares

Caledonia Investments plc ("Caledonia") announces that on 20 December 2011 it purchased 4,500 of its own ordinary shares of 5p each at an average price of 1329.96 pence per share. The purchased shares will be cancelled.

Following the above purchase of shares, Caledonia's issued share capital includes 57,947,051 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

20 December 2011

END