| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | West | Dormitory | SO | SO | Bukit Gombak |
| Premier Security Co-operative Ltd | West | Dormitory | SO | SO | Bukit Gombak |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | West | Dormitory | SO | SO | Bukit Gombak |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | SO | SSO | Woodlands |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | SO | SO | Bukit Gombak |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | CSO | SSS | Bukit Batok |
| Premier Security Co-operative Ltd | West | Dormitory | SO | SSO | Boon Lay |
| Guthrie FMC Security Pte Ltd | West | Dormitory | SO | SSO | Choa Chu Kang |
| TwinRock Global | North | Dormitory | SO | SO | Admiralty |
| Premier Security Co-operative Ltd | West | Dormitory | SO | SO | Bukit Gombak |
| Premier Security Co-operative Ltd | West | Dormitory | SO | SO | Bukit Gombak |
| Guthrie FMC Security Pte Ltd | West | Dormitory | SO | SO | Bukit Gombak |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | West | Dormitory | SO | SO | Bukit Gombak |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | CSO | SSS | Yishun |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | CSO | CSO | Lakeside |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | CSO | CSO | Lakeside |
| Guthrie FMC Security Pte Ltd | North | Dormitory | SO | SO | Yishun |
| 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 |
| William Secure Solutions Pte Ltd | Central | Embassy | SSO | SSO | Bukit Batok |
| FormTeam Consultancy Pte Ltd | South | Events | OE | SS | Sengkang |
| FormTeam Consultancy Pte Ltd | South | Events | OE | SS | Sembawang |
| SMS Security | Central | Gov Building | SO | SO | Tampines West |
| Metropolis Security Systems Pte Ltd | East | Gov Building | SSO | SS | Aljunied |
