Holding(s) in Company

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 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                                            √
                                                                                        
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            Aviva plc & its subsidiaries                                  
notification obligation:                                                                
iii                                                                                     
                          Registered Holder:                                            
                                                                                         
                          BNY (Nominees) Limited                                24,459*
                                                                                        
                                               
                          BNY Norwich Union Nominees Limited                   312,323*            
                                         
                                 
4. Full name of           Chase (GA Group) Nominees Limited                  1,927,381*  
shareholder(s)                                                                          
 (if different from 3.):                                                                
iv                        Chase Nominees Limited                                67,303*
                                                                                       
                                                                                        
                          CUIM Nominee Limited                                  37,043*
                                                                                        
                                                                                        
                          Vidacos Nominees Limited                              19,276*
                                                                                        
                                                                                        
                          *denotes direct interest                                      
                                                                                        
                                                                                        
                                                                                        
5. Date of the                                                                          
transaction and date on                                                                 
which the threshold is    15 November 2012                                              
crossed or                                                                              
reached: v                                                                              
                                                                                        
6. Date on which issuer   16 November 2012                                              
notified:                                                                               
                                                                                        
7. Threshold(s) that is/                                                                
are crossed or            4% to 3% Change at Direct Interest Level                      
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 x
using        of        of        of shares   rights                                         
the ISIN     Shares    Voting                                                               
CODE                   Rights                                                               
                                 Direct      Direct xi  Indirect xii   Direct Indirect      
                                                                                            
                                                                                            
Ordinary                                                                                    
Shares                                                                                      
                                                                                            
             3,075,934 3,075,934 2,387,785   2,387,785  Not            3.71%  Not           
                                                        disclosable           disclosable   
GB0004866223                                                                                
                                                                                            
                                                                                            
                                                                                 
                                                                                            
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 Expiration   Exercise/     Number of voting rights   % of voting    
financial  price    date xvii    Conversion    instrument refers to      rights xix, xx 
instrument                       period xviii                                           
                                                                                        
                                                                                        
                                                                         Nominal   Delta
                                                                                        
                                                                                        
      
Total (A+B+C)                                                                           
                                                                                        
Number of voting rights                  Percentage of voting rights                    
                                                                                        
2,387,785                                3.71%                                          
                                                                                        

 

9. Chain of controlled undertakings through which the voting rights and/or the          
financial instruments are effectively held, if applicable: xxi                          
                                                                                        
The voting rights are managed and controlled by Aviva Investors Global Services         
Limited, with the following chain of controlled undertakings:-                          
                                                                                        
                                                                                        
                                                                                        
Aviva Investors Global Services Limited:                                                
                                                                                        
Aviva plc (Parent Company)                                                              
                                                                                        
Aviva Group Holdings Limited (wholly owned subsidiary of Aviva plc)                     
                                                                                        
Aviva Investors Holdings Limited (wholly owned subsidiary of Aviva Group                
Holdings Limited)                                                                       
                                                                                        
Aviva Investors Global Services Limited (wholly owned subsidiary of Aviva               
Investors Holdings Limited)                                                             


Proxy Voting:                                                                           
                                                                                        
10. Name of the proxy holder:                       See Section 4                       
                                                                                        
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:   Figures are based on a total number of voting rights of   
                               64,320,708, as per the Company's Total Voting Rights     
                              Announcement of 1 June 2011.                              
                                                                                        
                                                                                        
14. Contact name:                  Diane Thirkettle, Aviva plc                          
                                                                                        
15. Contact telephone number:      01603 687803