Transaction in Own Shares

21 May 2008

                        Keller Group plc (the Company)                         

   Transfer of Shares from Treasury to satisfy Performance Share Plan awards   

Keller Group plc announces that on 19 May 2008 it transferred 10,000 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 transfer of these shares, the Company holds 389,000 of its shares
in Treasury (of which, 139,000 were purchased specifically to satisfy
Performance Share Plan Awards) and has 65,915,235 ordinary shares in issue
excluding Treasury shares.

Jackie Holman

Company Secretary