| Star Security Services | Island Wide | - | OE | SS | Woodlands |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Stalwart Security Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Securus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| Securus Pte Ltd | Island Wide | Commercial | SO | SO | Tampines |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Woodlands |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSO | Bukit Batok |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSO | Bukit Batok |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SO | Yishun |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SO | Yishun |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SO | Yishun |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SSS | Sengkang |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Fervour Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
