Blocklisting - Interim Review

SCHEDULE 5

                       BLOCK LISTING SIX MONTHLY RETURN                        

To: Listing Applications

UK Listing Authority

Financial Services Authority

25, The North Colonnade

Canary Wharf

London, E14 5HS

Please ensure the entries on this return are type

1. Name of company: Keller Group plc                                           

2. Name of scheme: Keller Group plc Approved Company Share Option Plan and     
Keller Group plc Unapproved Company Share Option Plan                          

3. Period of return: From 01/01/2005 to 30/06/2005                             

4.  Number and class of share(s) (amount  2,990,000                            
    of stock/debt security) not issued                                         
    under scheme                                                               

5.  Number of shares issued/allotted      5,000                                
    under scheme during period:                                                

6.  Balance under scheme not yet issued/  2,985,000 (of which, 623,000 have    
    allotted at end of period             lapsed)                              

7.  Number and class of share(s) (amount  3,000,000 10p Ordinary Shares        
    of stock/debt securities) originally  admitted in July 2002                
    listed and the date of admission;                                          

Please confirm total number of shares in issue at the end of the period in     
order for us to update our records                                             
                                                                               
65,372,735                                                                     

Contact for queries: Keller Group plc   Address: Aztec House, 397-405 Archway  
                                        Road                                   
                                                                               
                                        London, N6 4EY                         

Name: Mrs Jackie Holman                 Telephone: [phone]               

Person making return Name:………………………………………………….

Position:………………………………………………….Signature:……………………………………………