Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES                                           
                                                                                         
1. Identity of the issuer or the underlying issuer of   CHEMRING GROUP PLC               
existing shares to which voting rights are attached:                                     
                                                                                         
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): Change in Share Capital                                          
                                                                                         
3. Full name of person(s) subject to the        CANTILLON CAPITAL MANAGEMENT LLC         
notification obligation:                                                                 
                                                                                         
4. Full name of shareholder(s)  (if different   BANK OF NEW YORK MELLON, STATE STREET    
from 3.):                                       BANK, NORTHERN TRUST BANK, JP MORGAN     
                                                                                         
5. Date of the transaction and date on which    23 MAY 2011                              
the threshold is crossed or reached: 3                                                   
                                                                                         
6. Date on which issuer notified:               24 MAY 2011                              
                                                                                         
7. Threshold(s) that is/are crossed or          5%                                       
reached:                                                                                 
                                                                                         
8. Notified details:                                                                     
                                                                                         
A: Voting rights attached to shares                                                      
                                                                                         
Class/type of      Situation previous to the   Resulting situation after the triggering  
shares             triggering transaction      transaction                               
                                                                                         
                   Number of   Number of       Number   Number of voting  % of  voting   
                   Shares      Voting Rights   of       rights            rights         
if possible using                              shares                                    
the ISIN CODE                                                                            
                                               Direct   Direct Indirect   Direct Indirect
                                                                                         
GB00B45C9X44       8,454,563   8,454,563                       10,055,606        5.1748% 
                                                                                         
B: Qualifying Financial Instruments                                                      
                                                                                         
Resulting situation after the triggering transaction                                     
                                                                                         
Type of financial    Expiration date  Exercise/           Number of voting   % of voting 
instrument                            Conversion Period   rights that may be rights      
                                                          acquired if the                
                                                          instrument is                  
                                                          exercised/                     
                                                          converted.                     
                                                                                         
                                                                                         
                                                                                         
C: Financial Instruments with similar economic effect to Qualifying Financial            
Instruments                                                                              
                                                                                         
Resulting situation after the triggering transaction                                     
                                                                                         
Type of financial Exercise Expiration date  Exercise/      Number of voting  % of voting   
instrument        price                   Conversion     rights instrument rights        
                                          period         refers to                       
                                                                                         
                                                                                         
                                                                                         
                                                                           Nominal  Delta
                                                                                         
                                                                                         
                                                                                         
Total (A+B+C)                                                                            
                                                                                         
Number of voting rights                             Percentage of voting rights          
                                                                                         
10,055,606                                          5.1748%                              
                                                                                         

 

9. Chain of controlled undertakings through which the voting rights and/or the          
financial instruments are effectively held, if applicable:                              
                                                                                        
WILLIAM VON MUEFFLING IS THE SOLE SHAREHODER OF CANTILLON, INC., THE CORPORATE          
GENERAL PARTNER OF CANTILLON MANAGEMENT LP, WHICH IS THE SOLE MEMBER OF                 
CANTILLON CAPITAL MANAGEMENT LLC                                                        
                                                                                        
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:                                                    HELEN MARSH        
                                                                                        
15. Contact telephone number:                                        01489 864482