| Reachfield Security & Safety Management Pte Ltd | West | Commercial | SS | SS | - |
| Inhouse Employer | West | In-House | OM | SS | Woodlands |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | SS | Simei |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Commercial | SO | SO | - |
| First Security & Private Investigation (Singapore) Pte Ltd | West | Condominium | SSO | SSO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SSO | SSO | Bukit Batok |
| Inhouse Employer | West | In-House | OM | SS | Hougang |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Hougang |
| Danmax Security Management Pte Ltd | West | Condominium | SO | SO | - |
| Premier Security Co-operative Ltd | West | Dormitory | SO | SO | - |
| Prospect Protection Pte Ltd | West | Industrial / Factory | SSO | SSO | - |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Commercial | SS | SSO | Jurong East |
| Danmax Security Management Pte Ltd | West | Condominium | SO | SO | - |
| Reachfield Security & Safety Management Pte Ltd | West | Commercial | SS | SSO | Jurong East |
| Reachfield Security & Safety Management Pte Ltd | West | Commercial | SO | SO | - |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | Yishun |
| Inhouse Employer | West | In-House | SO | SSO | - |
| Prospect Protection Pte Ltd | West | Industrial / Factory | SSO | SSO | - |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSO | Bukit Batok |
| Kingston Property Maintenance Services Pte Ltd | West | Condominium | SO | SSO | Bukit Batok |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | SS | Jurong East |
| Mainguard Security Services (S) Pte Ltd | West | - | SS | SS | - |
| AETOS Holdings Pte Ltd | West | - | SO | SO | Marsiling |
