Transaction in Own Shares

Keller Group plc (the Company)                         

   Transfer of Shares from Treasury to satisfy Performance Share Plan awards   

Keller Group plc announces that on 28 April 2008 it transferred 6,250 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 367,750 of its shares
in Treasury (of which, 167,750 were purchased specifically to satisfy
Performance Share Plan Awards) and has 65,936,485 ordinary shares in issue
excluding Treasury shares.

Jackie Holman

Company Secretary