| Fervour Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | CSO | Pasir Ris |
| GATES PCM Integrated Services Pte Ltd | East | Commercial | SS | CSO | Bedok |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Industrial / Factory | SSS | SSS | Dover |
| MCST | North | In-House | SO | SO | Bedok |
| PICO Guards Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Legion Protection Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Kingston Property Maintenance Services Pte Ltd | East | Condominium | SO | SO | Simei |
| Securus Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Resorts World Sentosa | South | Commercial | SO | SO | Telok Blangah |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SO | Sembawang |
| Inhouse Employer | Central | In-House | SO | SS | Woodlands |
| Union Security Services Pte. Ltd. | North | Commercial | SS | Nil | Hougang |
| Pan Pacific Singapore | South | In-House | Security Mgt | SSS | Potong Pasir |
| Acestes Pte Ltd | Island Wide | - | OM | SSO | Clementi |
| Prosec Services Pte Ltd | East | - | SSO | SSO | Tampines |
| TwinRock Global | East | Condominium | SO | SO | Mountbatten |
| Aedge Services Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SSO | Marsiling |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSO | Bukit Batok |
| TwinRock Global | Central | - | Security Mgt | SO | Woodlands |
| Inhouse Employer | East | In-House | SO | SO | - |
| RAS Security Pte Ltd | North | Commercial | OE | SS | Bukit Batok |
