| Inhouse Employer | West | School | OE | SSO | Marsiling |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Bukit Batok |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SS | - |
| PICO Guards Pte Ltd | Island Wide | - | OE | SSS | Bedok |
| Prosegur Singapore Pte Ltd | Island Wide | - | OE | SS | Tampines |
| Triple ‘S’ Protection Pte Ltd | North | Shipyard / Port | SO | SO | Sembawang |
| Acestes Pte Ltd | Island Wide | - | OM | SS | Bukit Panjang |
| Inhouse Employer | West | Industrial / Factory | SO | SO | Marsiling |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| SMS Investigation & Security Pte Ltd | East | Condominium | SO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | - |
| Inhouse Employer | Central | In-House | SS | SSO | Hougang |
| Focus Security Services Pte Ltd | West | Condominium | SS | SS | - |
| Chang & Chang Security Management Pte. Ltd. | East | Condominium | SO | SO | Tampines |
| Soverus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| GATES PCM Integrated Services Pte Ltd | Central | Commercial | SO | SO | Novena |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SSO | Bukit Batok |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | CSO | Ang Mo Kio |
| Acestes Pte Ltd | Island Wide | - | OM | SO | Yishun |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SSO | Bukit Batok |
| Inhouse Employer | Island Wide | Construction | OM | SS | Sengkang |
| Kingston Property Maintenance Services Pte Ltd | Central | - | SS | SSS | Yishun |
| Orchid Hotel Private Limited | Central | In-House | OM | CSO | Marsiling |
| SATS Ltd | Island Wide | - | Inves | CSO | Bedok |
