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

SCHRODERS PLC

4.       Full name of shareholder(s) (if different from 3 above)

SEE 9

5.       Date of the transaction and date on which the threshold is crossed or reached

3 AUGUST 2015

6.       Date on which issuer notified

4 AUGUST 2015

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

ABOVE 5%

8.       Notified details

(A)         Voting rights attached to shares

Number of voting rights – Direct – N/A

Number of voting rights – Indirect – 18,872,713 – 5.006%

(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 – 68,144

Percentage of voting rights –                 Nominal – 0.018%       Delta – 1

Total A + B + C

Number of voting rights – 18,940,857

Percentage of voting rights –  5.024%

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

Schroder & Co. Limited                                                                   183,635                  0.049%

Schroders (C.I.) Limited                                                               2,444,267                  0.648%

Schroder Investment Management Limited                               16,028,347                   4.252%

Schroder Investment Management North America Limited            284,608                   0.075%

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

The shares referred to in section 9 are held in portfolios managed by those firms on a discretionary basis for clients under investment management agreements.

14.     Contact name

Chloe Talbot

15.     Contact telephone number

020 7658 6000

Notification authorised by:

LORRAINE SPROULE, DEPUTY COMPANY SECRETARY

4 AUGUST 2015