| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Focus Security Services Pte Ltd | West | Condominium | SS | SO | Bright Hill |
| Inhouse Employer | East | School | SO | SSO | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SSO | Simei |
| Star Security Services | Island Wide | - | Security Mgt | SS | Clementi |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | CSO | SSS | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | OE | CSO | Choa Chu Kang |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SSS | Jurong East |
| Crowne Plaza Changi Airport | East | In-House | OE | SS | Sengkang |
| Force-One Security | North | Data Centre | SS | SSS | Yishun |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Aigle Security Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| York Hotel (Private) Limited | Central | In-House | SO | SO | Bedok |
| Elitez Security Pte Ltd | East | Condominium | SO | SO | Mountbatten |
| Certis Group | Island Wide | Commercial | SO | SSO | Pasir Ris |
| Acestes Pte Ltd | Central | - | Security Mgt | Nil | Yishun |
| Mainguard Security Services (S) Pte Ltd | Island Wide | - | OE | SS | Tampines |
| Inhouse Employer | Island Wide | Construction | OM | SS | Hougang |
| GATES PCM Integrated Services Pte Ltd | Central | Commercial | SO | SO | Novena |
| SATS Ltd | Island Wide | - | Inves | CSO | Marsiling |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Sengkang |
| Soverus Pte Ltd | South | In-House | SSO | SO | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | OE | SSS | Tiong Bahru |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SS | Woodlands |
