| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSO | Simei |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Acestes Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Fervour Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| Securus Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Securus Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Strive Security Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Legion Protection Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SSS | Sengkang |
| Fervour Pte Ltd | Island Wide | - | OM | SO | Woodlands |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Strive Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Fervour Pte Ltd | Island Wide | - | OM | SO | Woodlands |
| Acestes Pte Ltd | Island Wide | - | OM | SO | Woodlands |
