| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| PICO Guards Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SO | Woodlands |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SO | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | South | - | OE | SSS | Woodlands |
| Force-One Security | North | Data Centre | OE | SSS | Woodlands |
| SATS Ltd | Island Wide | - | OM | SSS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | CSO | SSS | Woodlands |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SSS | Woodlands |
| Inhouse Employer | West | School | OE | SSS | Woodlands |
| Inhouse Employer | Island Wide | Construction | OM | SSS | Woodlands |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | SO | SSO | Woodlands |
| SATS Ltd | Island Wide | Commercial | SO | SS | Woodlands |
| SATS Ltd | Island Wide | Commercial | SO | SS | Woodlands |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | SS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | SS | Woodlands |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| Securus Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| PICO Guards Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SS | Woodlands |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Woodlands |
