| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | East | Dormitory | SO | SO | Yishun |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | East | Dormitory | SO | SSO | Woodlands |
| Guthrie FMC Security Pte Ltd | North | Dormitory | SO | SSO | Yishun |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Jurong East |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Boon Lay |
| Certis Group | West | Depot | SS | SS | Marsiling |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Bukit Batok |
| Aspectus Consultancy Pte Ltd | North | Depot | SO | SSO | Yishun |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Tuas Link |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Tuas Link |
| Triple ‘S’ Protection Pte Ltd | North | Depot | SS | SS | Marsiling |
| Triple ‘S’ Protection Pte Ltd | North | Depot | SS | SS | - |
| Triple ‘S’ Protection Pte Ltd | North | Depot | SS | SS | - |
| Certis Group | West | Depot | SS | SSS | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | North | Depot | SSO | SSO | Tampines |
| Aspectus Consultancy Pte Ltd | North | Depot | SO | SO | Yishun |
| Triple ‘S’ Protection Pte Ltd | North | Depot | SSO | SSO | Choa Chu Kang |
| Triple ‘S’ Protection Pte Ltd | Central | Depot | SSO | SO | Hougang |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SO | Hougang |
| Soverus Pte Ltd | Central | Data Centre | SSS | SSS | Woodlands |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines |
| Securitas Guarding Services (Singapore) Pte Ltd | West | Data Centre | SSO | CSO | Boon Lay |
| Force-One Security | North | Data Centre | SS | SO | Tampines East |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Pasir Ris |
