Notification of Major Interests in Shares

For filings with the FSA include the                                           
annex                                                                          
                                                                               
For filings with issuer exclude the                                            
annex                                                                          

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                                

1. Identity of the issuer or the underlying          Keller Group plc          
issuer of existing shares to which voting                                      
rights are attached: ii                                                        

2 Reason for the notification (please tick the appropriate box or boxes):      

An acquisition or disposal of voting rights                              Yes   
                                                                               
An acquisition or disposal of qualifying financial instruments which           
may result in the acquisition of shares already issued to which voting         
rights are attached                                                            
                                                                               
An acquisition or disposal of instruments with similar economic effect         
to qualifying financial instruments                                            
                                                                               
An event changing the breakdown of voting rights                               
                                                                               
Other (please                                                                  
specify):                                                                      

3. Full name of person(s) subject to          Barclays Global Investors        
the notification obligation: iii                                               
                                                                               
4. Full name of shareholder(s) (if                                             
different from 3.):iv                                                          
                                                                               
5. Date of the transaction and date                24 August 2009              
on which the threshold is crossed or                                           
reached: v                                                                     
                                                                               
6. Date on which issuer notified:                  25 August 2009              
                                                                               
7. Threshold(s) that is/are crossed           3% to below notifiable %         
or reached: vi, vii                                                            

8. Notified details:
A: Voting rights attached to shares viii, ix

Class/type of   Situation previous                 Resulting situation after               
shares           to the triggering                       the triggering                    
                    transaction                           transaction                      
                                                                                           
if possible      Number     Number     Number         Number of            % of voting     
using              of         of     of shares         voting               rights x       
the ISIN CODE    Shares     Voting                     rights                              
                            Rights                                                         
                                                                                           
                                       Direct   Direct xi   Indirect    Direct    Indirect 
                                                              xii                          
                                                                                           
GB0004866223   1,699,020  1,699,020     Not        Not        Not        Not        Not    
                                     Reportable Reportable Reportable Reportable Reportable
                                                                                           
B: Qualifying Financial Instruments                                                        
                                                                                           
Resulting situation after the triggering transaction                                       
                                                                                           
 Type of financial  Expiration       Exercise/         Number of voting      % of voting   
    instrument      date xiii  Conversion Period xiv  rights that may be        rights     
                                                        acquired if the                    
                                                         instrument is                     
                                                     exercised/ converted.                 
                                                                                           

C: Financial Instruments with similar economic effect to Qualifying Financial   
Instruments xv, xvi                                                             
                                                                                
Resulting situation after the triggering transaction                            
                                                                                
   Type of     Exercise Expiration Exercise/  Number of voting    % of voting   
  financial     price   date xvii  Conversion rights instrument  rights xix, xx 
  instrument                         period       refers to                     
                                     xviii                                      
                                                                                
                                                                Nominal   Delta 
                                                                                

Total (A+B+C)                                                                  
                                                                               
        Number of voting rights               Percentage of voting rights      
                                                                               
            Not Reportable                          Not Reportable             

9. Chain of controlled undertakings through which the voting rights and/or the 
financial instruments are effectively held, if applicable: xxi                 
                                                                               

Proxy Voting:                                                                  
                                                                               
10. Name of the proxy holder:                                                  
                                                                               
11. Number of voting rights proxy                                              
holder will cease to hold:                                                     
                                                                               
12. Date on which proxy holder will                                            
cease to hold voting rights:                                                   

13. Additional information:                                                    
                                                                               
14. Contact name:                                     Geoff Smith              
                                                                               
15. Contact telephone number:                         02071162913              

Note: Annex should only be submitted to the FSA not the issuer                 
                                                                               
Annex: Notification of major interests in sharesxxii                           

A: Identity of the persons or legal entity subject to the notification
obligation

Full name                                                                      
(including legal form of legal                                                 
entities)                                                                      
                                                                               
Contact address                                                                
(registered office for legal entities)                                         
                                                                               
Phone number & email                                                           
                                                                               
Other useful information                                                       
(at least legal representative for                                             
legal persons)                                                                 

B: Identity of the notifier, if applicable

Full name                                                                      
                                                                               
Contact address                                                                
                                                                               
Phone number & email                                                           
                                                                               
Other useful information(e.g.                                                  
functional relationship with the person                                        
or legal entity subject to the                                                 
notification obligation)                                                       

C: Additional information                                                      
                                                                               

For notes on how to complete form TR-1 please see the FSA website.