Company profile
G4S
- Industry
- Security and Investigations
- Employees
- 117,008
- Headquarters
- London
- Office locations
- 8
G4S company summary
G4S is a company in the Security and Investigations industry, headquartered in London. On LinkedIn the company has around 117,008 employees. Warmrank detected 7 technologies across 5 categories on g4s.com, including Amazon SES, Amazon Web Services, Apple iCloud Mail. The company lists 8 office locations. Its listed specialties include electronic monitoring, security services, secure solutions, youth custody and treatment programs, cash solutions.
What technology does G4S use?
Warmrank detected 7 technologies on g4s.com, last checked July 2026. Click any tool to see other companies that use it.
Apple iCloud Mail
Google Workspace
Microsoft 365
Amazon SESMarketing automation
Marketo
Amazon Web ServicesSSL/TLS certificate authorities
DigiCertAbout G4S
G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security solutions that allow clients to focus on their core business. Through a global workforce of approximately 800,000 people, we leverage best practices in communities all over the world. With revenues at approximately $20 billion, we are supported by efficient processes and systems that can only come with scale to help deliver our promise locally: keeping people safe so our communities can thrive. For more information on G4S, visit www.g4s.com.
Specialties
Where is G4S located?
G4S lists 8 office locations.
Compare companies similar to G4S
More companies in Security and Investigations.
| Company | Industry | Employees | Founded | Headquarters |
|---|---|---|---|---|
G4S g4s.com | Security and Investigations | 117,008 | - | London |
 Prosegur prosegur.com | Security and Investigations | 67,639 | - | Madrid, Madrid |
Securitas Security Services USA, Inc. securitasinc.com | Security and Investigations | 44,945 | - | Parsippany, NJ |
 Convergint convergint.com | Security and Investigations | 7,192 | - | Hoffman Estates, Illinois |
 GardaWorld garda.com | Security and Investigations | 24,962 | 1995 | Saint-Laurent , Quebec |
 HID hidglobal.com | Security and Investigations | 4,100 | - | Austin, TX |
 GRUPO GR grupogr.com.br | Security and Investigations | 4,087 | 1992 | São Paulo, SP |
 Security Segurança e Serviços sousecurity.com.br | Security and Investigations | 3,481 | 1979 | São Paulo, SP |
 SegurPro segurpro.com.br | Security and Investigations | 9,452 | - | São Paulo, São Paulo |
| Security and Investigations | 2,194 | 1972 | Quantico, VA | |
 PINKERTON | Comprehensive Risk Management pinkerton.com | Security and Investigations | 2,131 | 1850 | Ann Arbor, MI |
Frequently asked questions about G4S
What does G4S do?
G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security solutions that allow clients to focus on their core business. Through a global workforce of approximately 800,000 people, we leverage best practices in communities all over the world. With revenues at approximately $20 billion, we are supported by efficient processes and systems that can only come with scale to help deliver our promise locally: keeping people safe so our communities can thrive. For more information on G4S, visit www.g4s.com.
What technology does G4S use?
Warmrank detected 7 technologies on g4s.com, including Amazon SES, Amazon Web Services, Apple iCloud Mail, DigiCert, Google Workspace, Marketo, Microsoft 365.
How many employees does G4S have?
G4S has around 117,008 employees on LinkedIn.
Where is G4S headquartered?
G4S is headquartered in London.
Where does G4S have offices?
G4S lists 8 office locations, including London, SW1H 0DB, GB; 2620 Albertslund, DK, DK; Amsterdam, North Holland, NL; Bela Vista, São Paulo SP, 01311-000; Cheung Sha Wan Rd, Lai Chi Kok, HK.
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