Holding(s) in Company

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 LEGAL & GENERAL GROUP Plc (L&G) 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 3 AUGUST 2009 6. Date on which issuer notified 5 AUGUST 2009 7. Threshold(s) that is/are crossed or reached ABOVE 3% 8. Notified details (A) Voting rights attached to shares Number of voting rights - Direct - N/A Number of voting rights - Indirect - 16,690,710 - 3.16% (B) Financial Instruments - N/A (C) Financial Instruments with similar economic effect to Qualifying Financial Instruments - N/A Total A + B + C Number of voting rights - 16,690,710 Percentage of voting rights - 3.16% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable Legal & General Group Plc (Direct & Indirect) (Group) Legal & General Investment Management (Holdings) Limited (LGIMH) (Direct and Indirect) Legal & General Investment Management Limited (LGIM) Legal & General Group Plc (Direct) (L&G) (16,690,710 - 3.16% = LGAS, LGPL & PMC) Legal & General Investment Management (Holdings) Limited (LGIMHD) (Direct) Legal & General Insurance Holdings Limited (Direct) (LGIH) Legal & General Assurance (Pensions Management) Limited (PMC) Legal & General Assurance Society Limited (LGAS & LGPL) Legal & General Pensions Limited (Direct) (LGPL) 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 HELEN LEWIS 15. Contact telephone number 020 3124 3851 Name of authorised company official responsible for making this notification. IAN JOHNSON, COMPANY SECRETARY 6 AUGUST 2009
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