| Securus Pte Ltd | Island Wide | - | OE | CSO | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | SS | SO | Marsiling |
| SATS Ltd | Island Wide | Commercial | SO | SS | Woodlands |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | SS | Tampines |
| Prosegur Singapore Pte Ltd | Island Wide | - | OE | SS | Tampines |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Peregrine Security 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 |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | SSS | Sengkang |
| SATS Ltd | Island Wide | - | OM | SSS | Sengkang |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | SO | Tampines |
| PICO Guards Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Fervour Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Soverus Pte Ltd | Island Wide | - | SSO | SO | Tampines |
| SATS Ltd | Island Wide | Commercial | SO | SS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| SATS Ltd | Island Wide | - | OM | SO | Sengkang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SO | Sengkang |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SO | Sengkang |
