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

    28 SEPTEMBER 2016

    6.       Date on which issuer notified

    29 SEPTEMBER 2016

    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 - 20,241,883 - 5.31%

    (B)         Financial Instruments

                  541,592 - 0.14%

    (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 - 96,502

    Percentage of voting rights -                          Nominal - 0.02%       
    Delta - 0.02%

    Total A + B + C

    Number of voting rights - 20,879,977

    Percentage of voting rights - 5.47%

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

    BlackRock (Singapore) Holdco Pte. Ltd., BlackRock Advisors (UK) Limited,
    BlackRock Advisors, LLC, BlackRock Asia-Pac Holdco, LLC, BlackRock Asset
    Management Canada Limited, BlackRock Asset Management Deutschland AG, BlackRock
    Asset Management North Asia Limited, BlackRock Australia Holdco Pty. Ltd.,
    BlackRock Canada Holdings LP, BlackRock Canada Holdings ULC, BlackRock Capital
    Holdings, Inc., BlackRock Cayco Limited, BlackRock Delaware Holdings Inc.,
    BlackRock Financial Management, Inc., BlackRock Fund Advisors, BlackRock Group
    Limited, BlackRock HK Holdco Limited, BlackRock Holdco 2, Inc., BlackRock
    Holdco 3, LLC, BlackRock Holdco 4, LLC, BlackRock Holdco 6, LLC, BlackRock
    Institutional Trust Company, National Association, BlackRock International
    Holdings, Inc., BlackRock International Limited, BlackRock Investment
    Management (Australia) Limited, BlackRock Investment Management (UK) Limited,
    BlackRock Investment Management, LLC, BlackRock Japan Co., Ltd., BlackRock
    Japan Holdings GK, BlackRock Trident Holding Company Limited, BlackRock, Inc.,
    BR Jersey International Holdings L.P., Trident Merger, LLC

    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

    MARC-OLIVER LESCH

    15.     Contact telephone number

    020 7743 3650

    Notification authorised by:

    LORRAINE SPROULE, DEPUTY COMPANY SECRETARY

    30 SEPTEMBER 2016