Transaction in Own Shares

18 MARCH 2008

                        Keller Group plc (the Company)                         

           Share purchases to satisfy Performance Share Plan awards            

Keller Group plc announces that on 17 March 2008, it purchased 50,000 of its
ordinary shares of 10p each at 683.5 pence per share through Dresdner
Kleinwort. All of these shares will be held as Treasury shares and were
purchased specifically to satisfy awards under the Keller Group Performance
Share Plan 2004 previously approved by shareholders.

This purchase equates to approximately 0.1 per cent of the Company's current
issued share capital.

Following the purchase of these shares, the Company holds 275,000 of its shares
in Treasury and has 66,029,235 ordinary shares in issue excluding Treasury
shares.