Group 4 Securicor (G4S Plc) is the World's leading International security solutions group, which specialises in assessing current and future risks and developing secure solutions to minimise their impact across a wide range of geographic markets and business sectors.

G4S is also the largest employer quoted on the London Stock Exchange with a secondary stock exchange listing in Copenhagen. G4S has operations in over 110 countries and over 530,000 employees. For 2007 annual revenue was £4.5bn and PITA over £312m.