Holding(s) in Company

For filings with the FCA 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 issuer                                      
of existing shares to which voting rights are                           Keller Group plc
attached:ii                                                                             
                                                                                        
2. Reason for the notification (please tick the appropriate box or boxes):               
                                                                                        
An acquisition or disposal of voting rights                                            x
                                                                                        
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 the                                Schroders plc   
notification obligation:iii                                                             
                                                                                        
4. Full name of shareholder(s)                                                          
 (if different from 3.):iv                                                              
                                                                                        
5. Date of the transaction and date on                                                  
which the threshold is crossed or                                          13.03.15     
reached: v                                                                              
                                                                                        
6. Date on which issuer notified:                                          31.03.15     
                                                                                        
7. Threshold(s) that is/are crossed or                                     Above 5%     
reached: vi, vii                                                                        
            
                                                                          
8. Notified details:                                                                                             
                                                                                                                 
A: Voting rights attached to shares viii, ix                                                                     
                                                                                                                 
Class/type   Situation previous                   Resulting situation after the triggering transaction           
of           to the triggering                                                                                   
shares       transaction                                                                                         
                                                                                                                 
                                                                                                                 
if possible  Number                 Number        Number      Number of voting        % of  voting rights        
using        of                     of            of shares   rights                  x                          
the ISIN     Shares                 Voting                                                                       
CODE                                Rights                                                                       
                                                  Direct      Direct xi Indirect xii  Direct     Indirect        
                                                                                                                 
                                                                                                                 
  Ordinary                                                                                                       
                                                                                                                 
GB0004866223                                                                                                     
                   3,280,627          3,148,747    5,278,548     N/A      3,603,178    N/A          5.037%       
                                                                                                                 
                                                                                                                 
B: Qualifying Financial Instruments                                                                              
                                                                                                                 
Resulting situation after the triggering transaction                                                             
                                                                                                                 
Type of        Expiration            Exercise/                 Number of voting             % of voting          
financial      date xiii             Conversion Period xiv     rights that may be           rights               
instrument                                                     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 price        Expiration  Exercise/   Number of voting rights      % of voting             
financial                           date xvii   Conversion  instrument refers to         rights xix, xx          
instrument                                      period                                                           
                                                xviii                                                            
                                                                                                                 
                                                                                         Nominal    Delta        
     CFD               N/A              N/A         N/A               28,919                                     
                                                                                         0.040%          1       
                                                                                                                 
                                                                                                                 
                                                                                                                 
Total (A+B+C)                                                                                                    
                                                                                                                 
Number of voting rights                            Percentage of voting rights                                 
                                                                                                                 
     3,632,097                                              5.078%                               
                                                                                                                 

9. Chain of controlled undertakings through which the voting rights and/or the          
financial instruments are effectively held, if applicable: xxi                          
                                                                                        
Schroder & Co. Limited                                     17,000          0.024%         
                                                                                        
Schroder Investment Management Limited                  3,106,656          4.343%  
                                                                                     
Schroder Investment Management North America Limited      508,441          0.711%         
                                                    
                                                                                        
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:   The shares referred to in section 9 are held in portfolios
                              managed by those firms on a discretionary basis for       
                              clients under investment management agreements. This      
                              disclosure has been calculated based on issue share       
                              capital amount 71,528,701.                                
                                  
                                                    
14. Contact name:                             Kerry Porritt                                       
                                              Group Company Secretary                  
                                                                                        
15. Contact telephone number:                  [phone]