| SECOM Singapore Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | CSO | Marsiling |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Strive Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Marsiling |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSS | CSO | Marsiling |
| Acestes Pte Ltd | Central | - | Security Mgt | CSO | Marsiling |
| TwinRock Global | Central | - | Security Mgt | CSO | Marsiling |
| Acestes Pte Ltd | Island Wide | - | OM | SS | Eunos |
| Shine Security Agency Pte Ltd | Island Wide | - | OE | SS | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Punggol |
| Soverus Pte Ltd | Island Wide | - | SSS | Nil | Woodlands |
| SATS Ltd | Island Wide | - | OM | Nil | Woodlands |
| Acestes Pte Ltd | Island Wide | - | OM | Nil | Woodlands |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | Nil | Hougang |
| SATS Ltd | Island Wide | - | OM | Nil | Hougang |
| Acestes Pte Ltd | Central | - | Security Mgt | SO | Choa Chu Kang |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | SSO | Simei |
| SATS Ltd | Island Wide | - | OM | SO | Hougang |
