| Crowne Plaza Changi Airport | East | In-House | OE | SSS | Tampines |
| Soverus Pte Ltd | Island Wide | - | OE | SS | Choa Chu Kang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| Soverus Pte Ltd | North | School | SO | SO | Serangoon |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Inhouse Employer | Central | In-House | SO | SSO | - |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Pioneer |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Woodlands |
| RAS Security Pte Ltd | North | In-House | Office Team | SO | Bedok |
| William Secure Solutions Pte Ltd | Central | Embassy | SSO | SSO | Bukit Batok |
| SATS Ltd | Island Wide | - | OM | SO | Sengkang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| PICO Guards Pte Ltd | Island Wide | - | OM | SSS | Bishan |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SSO | Boon Lay |
| Metropolis Security Systems Pte Ltd | East | Condominium | SSO | SS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Bukit Batok |
| GoMobile Security Solutions Pte Ltd | North | Industrial / Factory | SO | SSO | Sembawang |
| Reachfield Security & Safety Management Pte Ltd | North | Commercial | SO | SO | - |
| Pan Pacific Serviced Suites Beach Road | South | In-House | SO | SSO | Khatib |
| Force-One Security | North | Data Centre | SS | SS | Hougang |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SO | Marsiling |
| Prospect Protection Pte Ltd | East | Industrial / Factory | SO | SO | Simei |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| Securus Pte Ltd | North | Commercial | SO | SO | Yishun |
