Blocklisting - Interim Review

SCHEDULE 5

                             BLOCK LISTING 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 Executive Share Option Scheme 1984         

3. Period of return: From 01/07/2005 to 30/06/2006                             

4.  Number and class of share(s) (amount  5,000                                
    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/  Nil                                  
    allotted at end of period                                                  

7.  Number and class of share(s) (amount  1,000,000 10p Ordinary Shares        
    of stock/debt securities) originally  admitted on 24 April 1998            
    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                                             
                                                                               
65,730,074                                                                     

Contact for queries: Keller Group plc   Address: 12th Floor, Capital House, 25 
                                        Chapel Street,                         
                                                                               
                                        London, NW1 5DH                        

Name: Jackie Holman                     Telephone: [phone]               

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

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