Identity graph
G4S headquarters, locations and relationships
- Legal name
- G4S SECURE SOLUTIONS AG
- Industry
- Security Software
- Founded
- 1901
- Ticker
- LSE: GFS
- Phone
- +44 20 8770 7000
- Website
- g4s.com
- LinkedIn profile for G4S
G4S office locations
| City | State / region | Country | Type |
|---|---|---|---|
| London | England | United Kingdom | Headquarters |
| Itajaí | Santa Catarina | Brazil | Office |
| São Paulo | São Paulo | Brazil | Office |
| London | Ontario | Canada | Office |
| Windsor | Ontario | Canada | Office |
| Bogotá | Bogota D.C. | Colombia | Office |
- Parent company
- G4S is part of Allied Universal Security Services.
- Competitors
- G4S competes with 12 organizations in the GraphIQ.ai identity graph.
Verified from public filings, company websites and news · Methodology
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Revenue and GTM teams
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Government
About G4S
G4S (LSE: GFS) is headquartered in London, England, United Kingdom. Founded in 1901, the company has 51 recorded locations across 14+ countries and employs approximately 533,000 people worldwide.
Where is G4S's main office?
G4S's main headquarters office is located at 105 Victoria Street 5th Floor Southside, London, England SW1E 6QT, United Kingdom. This is the company's primary corporate address.
G4S regional offices
Beyond its headquarters in London, G4S has recorded locations in United Kingdom, Brazil, Canada, Colombia, Denmark, France, Hong Kong, Indonesia and 6 other countries.
G4S contact information
The main switchboard for G4S headquarters can be reached at +44 20 8770 7000. Official website: g4s.com.
What does G4S do?
G4S plc operates as a global integrated security company. The Company offers security guards, alarms, monitoring, management and the transportation of valuables and currencies. G4S provides these services, in addition to others, around the world.
One entity, every stage
Put G4S to work across your revenue bowtie
- Target Define the market Build the account list from companies shaped like your best customers, G4S included. Fingerprint search
- Cover Plan territories G4S's 51 locations roll up to one account, so it lands in one territory, once. Territory planning
- Engage Act on timing Leadership changes, funding and M&A arrive linked to the account, not a loose headline. Signal monitoring
- Convert Close on a resolved record Inbound and closed-won attach to one CRM record, with no duplicates to merge. CRM enrichment
- Retain Ground every answer Customer teams and AI agents answer from the same entity, with a source and a date. AI agent data layer
- Expand Find the next buyer inside Follow subsidiaries and divisions to the next team that can buy. Account expansion
About the source
What is GraphIQ.ai?
A B2B identity graph. It resolves each organization into one verified entity and maps its parent and subsidiaries, employees, competitors and news signals. Revenue teams use it in the product; AI agents query it through the REST API and MCP server.
POST/api/v2/organizations/search
G4S: frequently asked questions
Where is G4S headquarters?
105 Victoria Street 5th Floor Southside, London, England SW1E 6QT, United Kingdom.
What is G4S's phone number?
+44 20 8770 7000 (headquarters).
When was G4S founded?
1901.
How many employees does G4S have?
About 533,000, as of October 2026 (GraphIQ.ai estimate).
How many offices does G4S have?
51 locations across 14+ countries, including Itajaí, São Paulo, London, Windsor.
Is G4S a public company?
Yes. G4S trades on LSE under the ticker GFS.
Questions about GraphIQ.ai
Is GraphIQ.ai a list of companies like a spreadsheet?
No. Each organization resolves to one verified entity linked to its parent, subsidiaries, people and signals, so G4S here is the same G4S in your CRM, territory plan and agent answers.
Where does this G4S data come from?
Public filings, company websites and news, resolved to one entity and continuously updated.