Blocklisting - Interim Review

BLOCK LISTING SIX MONTHLY RETURN                        

Information provided on this form must be typed or printed electronically.

To: The FSA

Date: 31 July 2007

Name of applicant:                     John Wood Group PLC                     
                                                                               
Name of scheme:                        The John Wood Group PLC 2002 Executive  
                                       Share Option Scheme                     
                                                                               
Period of return:            From:                     To:    31 July 2007     
                                                                               
Balance under scheme from previous     0 shares                                
return:                                                                        
                                                                               
The amount by which the block scheme   1,078,000 shares                        
has been increased, if the scheme has                                          
been increased since the date of the                                           
last return:                                                                   
                                                                               
Number of securities issued/allotted   0 shares                                
under scheme during period:                                                    
                                                                               
Balance under scheme not yet issued/   1,078,000 shares                        
allotted at end of period                                                      
                                                                               
Number and class of securities         1,078,000 Ordinary shares - June 2007   
originally listed and the date of                                              
admission                                                                      
                                                                               
Total number of securities in issue at 523,497,512                             
the end of the period                                                          

Name of contact:                        LORRAINE SPROULE                       
                                                                               
Address of contact:                     John Wood House, Greenwell Road,       
                                        Aberdeen                               
                                                                               
Telephone number of contact:            01224 851041                           

SIGNED BY _IAN JOHNSON

[DEL:Director:DEL]/company secretary/[DEL:suitably experienced:DEL] [DEL:
employee:DEL][DEL:/duly authorised officer:DEL],

for and on behalf of

JOHN WOOD GROUP PLC

Name of applicant

If you knowingly or recklessly give false or misleading information you may be
liable to prosecution.