Holding(s) in Company

Keller Group plc ("the Company")                        

Keller Group plc was yesterday notified that, as at 18th May 2006, Barclays PLC
through the following legal entities has a notifiable interest in 2,640,919
ordinary shares in the Company, which represents 4.02% of its issued ordinary
share capital.

Legal Entity                        Holding            Percentage Held           
                                                                               
Barclays Capital                    345,692                     0.5265                    
Securities Ltd                                                                 
                                                                               
Gerrard Ltd                          57,795                     0.0880                    
                                                                               
Barclays Life Assurance Co          457,704                     0.6972                    
Ltd                                                                            
                                                                               
Barclays Global Investors         1,779,728                     2.7108                    
Ltd