| Inhouse Employer | West | In-House | OM | CSO | Sengkang |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SO | Bukit Batok |
| Prospect Protection Pte Ltd | West | Industrial / Factory | SS | SS | Tuas Link |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | SSS | Jurong East |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSS | Choa Chu Kang |
| AETOS Holdings Pte Ltd | West | - | SO | SS | Buangkok |
| Securitas Guarding Services (Singapore) Pte Ltd | West | Commercial | SSO | SSO | - |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Woodlands |
| Titanium Safety & Security Pte Ltd | West | Dormitory | SSO | SO | Woodlands |
| Titanium Safety & Security Pte Ltd | West | Dormitory | SSO | SS | Woodlands |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Woodlands |
| Storm Protection Pte Ltd | West | Industrial / Factory | SS | SS | Bukit Panjang |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | Bukit Panjang |
| Union Security Services Pte. Ltd. | West | Condominium | SS | SS | Bukit Panjang |
| Titanium Safety & Security Pte Ltd | West | Dormitory | SSO | SSO | Bukit Batok |
| DP Quest Investigation Consultancy Pte Ltd | West | Condominium | SSO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | West | School | SSO | SSO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SSO | SSO | Bukit Batok |
| ADT Integrated Security Solutions Pte. Ltd. | West | Commercial | SSO | SSO | Bukit Batok |
| Certis Group | West | School | SSO | SSO | Bukit Batok |
| DP Quest Investigation Consultancy Pte Ltd | West | Condominium | SSO | SSO | Bukit Batok |
| Elid Technology International Pte Ltd | West | Condominium | SO | SO | Choa Chu Kang |
| ADT Integrated Security Solutions Pte. Ltd. | West | Commercial | SSO | SSO | Jurong East |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Jurong East |
| TwinRock Global | West | Condominium | SSO | SSO | Woodlands |
