Notification of Major Interest in Shares

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                    JOHN WOOD GROUP PLC    
attached: ii                                                                            
                                                                                        
2 Reason for the notification:               
                                                                                        
An acquisition or disposal of voting rights                                       
                                                                                        
                                                                  
                                                                The trustees of the I C 
                                                                Wood 1981 Settlement    
3. Full name of person(s) subject to the                        Trust, being Triegen    
notification obligation: iii                                    Securities Ltd, Mr.     
                                                                David Ian Johnston and  
                                                                Mr. Graham Good         
                                                                                        
4. Full name of shareholder(s)                                  N/A                     
 (if different from 3.):iv                                                              
                                                                                        
5. Date of the transaction and date on                                                  
which the threshold is crossed or                               2 June 2011             
reached: v                                                                              
                                                                                        
6. Date on which issuer notified:                               2 June 2011             
                                                                                        
                                                                Below 5% of the issuer's
                                                                issued share capital    
                                                                                        
7. Threshold(s) that is/are crossed or                          Below 4% of the issuer's
reached: vi, vii                                                issued share capital    
                                                                                        
                                                                Below 3% of the issuer's
                                                                issued share capital    
                                                                                        


 

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                                                                      
                                                                                              
             Number          Number      Number    Number of voting     % of  voting rights x 
if possible  of              of          of shares rights                                     
using        Shares          Voting                                                           
the ISIN                     Rights      Direct    Direct xi   Indirect Direct    Indirect    
CODE                                                           xii                            
                                                                                              
GB0031575839                                                                                  
             28,987,413      28,987,413  Nil       Nil                  Below 3%              
                                                                                              
                                                                                              
                                                                                              
                                                                                              
B: Qualifying Financial Instruments                                                           
                                                                                              
Resulting situation after the triggering transaction                                          
                                                                                              
Type of        Expiration       Exercise/           Number of voting            % of voting   
financial      date xiii        Conversion Period   rights that may be          rights        
instrument                      xiv                 acquired if the                           
                                                    instrument is                             
                                                    exercised/ converted.                     
                                                                                              
N/A            N/A              N/A                 N/A                         N/A           
                                                                                              
                                                                                              
                                                                                              
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 rights
financial                    date xvii  Conversion instrument refers to     xix, xx           
instrument                              period                                                
                                        xviii                                                 
                                                                                              
                                                   N/A                      Nominal Delta      
N/A           N/A            N/A        N/A                                                   
                                                                            N/A    N/A        
                                                                                              
                                                                                              
                                                                                              
Total (A+B+C)                                                                                 
                                                                                              
Number of voting rights                          Percentage of voting rights                  
                                                                                              
NIL                                              Below 3%                                     
                                                                                              


 

9. Chain of controlled undertakings through which the voting rights and/or the          
financial instruments are effectively held, if applicable: xxi                          
                                                                                        
                                                                                        
                                                                                        
N/A                                                                                     
                                                                                        
                                                                                        
                                                                                        
Proxy Voting:                                                                           
                                                                                        
10. Name of the proxy holder:                                                N/A        
                                                                                        
11. Number of voting rights proxy holder will cease                          N/A        
to hold:                                                                                
                                                                                        
12. Date on which proxy holder will cease to hold                            N/A        
voting rights:                                                                          
                                                                                        
                                                                                        
                                                                                        
                                                                                        
13. Additional information:                                        N/A                  
                                                                                        
14. Contact name:                                                  GRAHAM GOOD          
                                                                                        
15. Contact telephone number:                                      01224 565200