Transaction in Own Shares

7 May 2008

                        Keller Group plc (the Company)                         

 1. Transaction in Own Shares
   
 2. Transfer of Shares from Treasury to satisfy Performance Share Plan awards
   
Keller Group plc announces that on 6 May 2008, it purchased 50,000 of its
ordinary shares of 10p each (`Shares') at 680 pence per share through Dresdner
Kleinwort. All of these Shares will be held as Treasury Shares.

The Company also transferred 7,500 of its ordinary shares of 10p each out of
Treasury to satisfy awards under the Keller Group Performance Share Plan 2004
previously approved by shareholders.

Following the above transactions, the Company holds 407,750 of its shares in
Treasury (of which, 157,750 were purchased specifically to satisfy Performance
Share Plan awards) and has 65,896,485 ordinary shares in issue excluding
Treasury shares.

Jackie Holman

Company Secretary