(WG-.L) Wood Group (John) PLC Buy/Sell

John Wood Group PLC ("Company")

NOTIFICATION OF MAJOR INTEREST IN SHARES

1. Name of Issuer

JOHN WOOD GROUP PLC

2. Reason for Notification

DISPOSAL OF VOTING RIGHTS

3. Full name of person(s) subject to notification obligation

BAILLIE GIFFORD & CO

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

21 OCTOBER 2009

6. Date on which issuer notified

22 OCTOBER 2009

7. Threshold(s) that is/are crossed or reached

BELOW 6%

8. Notified details

(A) Voting rights attached to shares

Number of voting rights - Direct - N/A

Number of voting rights - Indirect - 29,856,380 - 5.66%

(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 - N/A

Exercise Price - N/A

Expiration date - N/A

Exercise/conversion period - N/A

Number of voting rights instrument refers to - N/A

Percentage of voting rights - Nominal - N/A Delta - N/A

Total A + B + C

Number of voting rights - 29,856,380

Percentage of voting rights - 5.66%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable

Baillie Gifford & Co

Baillie Gifford Overseas Limited

Baillie Gifford & Co Limited

Baillie Gifford Life Limited

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

CHRIS HILL

15. Contact telephone number

0131 275 2147

Name of authorised company official responsible for making this notification.

IAN JOHNSON, COMPANY SECRETARY

22 OCTOBER 2009

END