18 May 2010 G4S PLC NOTIFICATION OF CHANGE IN MAJOR SHAREHOLDING The company was notified by Credit Suisse Group AG on 17 May 2010 as a result of a disposal of shares held through a chain of controlled undertakings comprising: 1. Credit Suisse Group AG: 2. Credit Suisse AG; 2.1 Credit Suisse Securities (Europe) Ltd; and 2.2 Credit Suisse (UK) Ltd; it now holds voting rights in the company amounting to less than 5% 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: Alison Flynn - Media Manager +44 (0) 1293 554400 Kevin Smith - Citigate Dewe Rogerson +44 (0) 7973 672649 Notes to Editors: G4S is the world's leading international security solutions group, specialising in outsourced 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 over 110 countries and over 595,000 employees. For more information on G4S, visitwww.g4s.com <http://www.g4s.com/> . [HUG#1416867]
Notification of Change in Major Shareholding
| Source: G4S plc