| SATS Ltd | East | - | OE | CSO | Marsiling |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| PICO Guards Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | CSO | Queenstown |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Queenstown |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Queenstown |
| 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 |
| Premier Security Co-operative Ltd | Central | - | SS | SSO | Simei |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Redhill |
| Fervour Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| SMS Investigation & Security Pte Ltd | Central | - | OM | CSO | Marsiling |
| Star Security Services | Island Wide | - | OE | CSO | Marsiling |
| PICO Guards Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
