London, Sep. 1, 2009 (PR Newswire UK Disclose) -- 
John Wood Group PLC ("Company")
  
NOTIFICATION OF MAJOR INTEREST IN SHARES
1. Name of Issuer
JOHN WOOD GROUP PLC
2. Reason for Notification
ACQUISITION OF VOTING RIGHTS
3. Full name of person(s) subject to notification obligation
BLACKROCK, INC
4. Full name of shareholder(s) (if different from 3 above)
N/A
5. Date of the transaction and date on which the threshold is crossed or
reached
26 AUGUST 2009
6. Date on which issuer notified
27 AUGUST 2009
7. Threshold(s) that is/are crossed or reached
ABOVE 14%
8. Notified details
(A) Voting rights attached to shares
Number of voting rights - Direct - N/A
Number of voting rights - Indirect - 66,699,424 - 12.64%
(B) Financial Instruments
N/A
(C) Financial Instruments with similar economic effect to Qualifying Financial
Instruments
Resulting situation after the triggering transaction
Type of financial instrument - CFD
Exercise Price - N/A
Expiration date - N/A
Exercise/conversion period - N/A
Number of voting rights instrument refers to - 7,295,818
Percentage of voting rights - Nominal - 1.38% Delta - N/A
Total A + B + C
Number of voting rights - 73,995,242
Percentage of voting rights - 14.02%
9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable
BLACKROCK INVESTMENT MANAGEMENT (UK) LIMITED - 73,995,242 (14.02%)
PROXY VOTING
10. Name of the proxy holder
N/A
11. Number of voting rights proxy holder will cease to hold
N/A
12. Date on which proxy holder will cease to hold voting rights
N/A
13. Additional Information
N/A
14. Contact name
KAI CHEW
15. Contact telephone number
020 7743 2602
Name of authorised company official responsible for making this notification.
 
IAN JOHNSON, COMPANY SECRETARY
31 AUGUST 2009

END