G4S is a security services company formed in 2004 when Securicor of London merged with the security business of Denmark's Group 4 Falck. It supplies security personnel, monitoring equipment, response units and secure prisoner transport, and it was the world's largest security company by revenue before Allied Universal bought it. Shareholders accepted the Allied Universal offer, the deal closed in April 2021, and G4S now runs as a subsidiary of the privately held US group rather than a listed company.
In India, G4S is one of the country's largest security solutions groups. The India business employs more than 135,000 people and works from 7 hubs plus over 131 branches and area offices. The main legal entity, G4S Secure Solutions (India) Private Limited, was incorporated on 23 March 1988, is registered in New Delhi, and reported revenue of INR 3,274.4 crore with net profit of INR 82.4 crore for FY 2024-25.
The India portfolio covers manned guarding, cash management, electronic security systems, facilities management, training, event security, security consultancy and risk management, central monitoring and recruitment services. Clients span banking, BPO, retail, healthcare, aviation, diplomatic missions and infrastructure. G4S India picked up two 2025 India and South Asia OSPAs, one for Outstanding Contract Security Company (Guarding) and one for Preeti Panhani as Outstanding Contract Security Manager or Director.