| Peregrine Security Pte. Ltd. | Central | - | SSO | SS | Bukit Panjang |
| Aero Asia Security Systems Pte Ltd | South | Condominium | SO | SO | Redhill |
| FormTeam Consultancy Pte Ltd | East | Condominium | SSO | SSO | Pasir Ris |
| Uniforce Security Services Pte Ltd | Central | Condominium | SS | SS | Marsiling |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | North | School | SSS | SS | Woodlands |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | Nil | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SO | Mountbatten |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | SS | SS | Pioneer |
| Resorts World Sentosa | South | Commercial | SS | SSS | Woodlands |
| Force-One Security | North | Data Centre | OE | SO | Tampines |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | Nil | Yishun |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Yishun |
| RAS Security Pte Ltd | North | Commercial | OE | SS | Bukit Batok |
| Securus Pte Ltd | Island Wide | - | OE | SSO | Simei |
| Metropolis Security Systems Pte Ltd | Central | Industrial / Factory | SO | SSO | Commonwealth |
| TwinRock Global | Central | - | Security Mgt | SSS | Pioneer |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | SSS | Woodlands |
| Guthrie FMC Security Pte Ltd | West | Dormitory | SO | SO | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | SS | SS | Woodlands |
| Inhouse Employer | Central | Hotel | SS | SS | Hougang |
| Security Masters Pte Ltd | Central | Data Centre | SS | SS | Yishun |
| SATS Ltd | East | - | OE | CSO | Marsiling |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Yishun |
