| Inhouse Employer | East | In-House | SO | SSO | Simei |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Punggol |
| GATES PCM Integrated Services Pte Ltd | Central | Commercial | SO | SO | Novena |
| Fervour Pte Ltd | Central | Data Centre | SO | SO | Novena |
| GATES PCM Integrated Services Pte Ltd | Central | Commercial | SO | SO | Novena |
| Trek Investigations & Security Management Services Pte Ltd | Central | Condominium | SO | SO | Novena |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SO | SO | Tuas Link |
| Elitez Security Pte Ltd | Central | Condominium | SO | SSO | - |
| GATES PCM Integrated Services Pte Ltd | Central | School | SO | SSO | - |
| Fervour Pte Ltd | Central | Data Centre | SO | SO | Hougang |
| Inhouse Employer | East | School | SO | SO | Serangoon |
| Inhouse Employer | East | School | SO | SO | Serangoon |
| Inhouse Employer | South | School | SO | SS | Bukit Batok |
| Force-One Security | Central | Commercial | SO | SSO | Woodlands |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| William Secure Solutions Pte Ltd | East | Condominium | SO | SSO | Sengkang |
| Titanium Safety & Security Pte Ltd | North | Dormitory | SO | SSO | Sengkang |
| AETOS Holdings Pte Ltd | West | - | SO | SO | Pioneer |
| Inhouse Employer | West | Industrial / Factory | SO | SS | Tuas Link |
| Inhouse Employer | North | In-House | SO | SS | Tuas Link |
| Metropolis Security Systems Pte Ltd | Central | Industrial / Factory | SO | SSO | Commonwealth |
| Metropolis Security Systems Pte Ltd | Central | Industrial / Factory | SO | SSO | Commonwealth |
| PICO Guards Pte Ltd | Central | School | SO | SSO | Commonwealth |
