Notification of Major Shareholding



27 May 2011





                                    G4S PLC

                       NOTIFICATION OF MAJOR SHAREHOLDING


The  company was notified today by BlackRock,  Inc that, following a disposal of
voting  rights,  through  a  chain  of  controlled  undertakings  it  now  holds
indirectly  voting rights  in the  company through  ordinary shares  and through
other  financial instruments  over 70,523,786 ordinary  shares.  This amounts to
4.9995% of the company's total voting rights.



Peter David
Company Secretary









For further enquiries, please contact:

Helen Parris - Director of Investor Relations                              +44
(0) 1293 554400

Media enquiries:
David Allchurch or John Sunnucks, Tulchan Group+44(0) 0207 353 4200

Notes to Editors:


G4S is the world's leading security solutions group, specialising in outsourcing
of  business processes in sectors where security and safety risks are considered
a  strategic threat.   G4S is  the largest  employer quoted  on the London Stock
Exchange  and has  a secondary  stock exchange  listing in  Copenhagen.  G4S has
operations in more than 120 countries and more than 625,000 employees.  For more
information on G4S, visitwww.g4s.com .






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