| York Hotel (Private) Limited | Central | In-House | OM | SS | Hougang |
| SMS Investigation & Security Pte Ltd | South | Condominium | SS | SS | - |
| SATS Ltd | Island Wide | - | OM | SSS | Sengkang |
| PICO Guards Pte Ltd | North | Industrial / Factory | SS | SS | Woodlands |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | CSO | Tampines |
| Orchid Hotel Private Limited | Central | In-House | SSO | SS | Sengkang |
| Fervour Pte Ltd | Island Wide | - | OM | SO | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Simei |
| Acestes Pte Ltd | Island Wide | - | OM | SSS | Choa Chu Kang |
| SMS Security | East | Commercial | SSO | SS | Simei |
| SATS Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| Fervour Pte Ltd | Island Wide | - | OM | SSS | Jurong East |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | CSO | Pasir Ris |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Woodlands |
| Orchid Hotel Private Limited | Central | In-House | OM | SS | Punggol |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | - |
| Young Women's Christian Association of Singapore | Central | In-House | SS | SSS | Marsiling |
| York Hotel (Private) Limited | Central | In-House | OM | SS | Choa Chu Kang |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SO | SSO | Simei |
| SATS Ltd | Island Wide | - | OM | Nil | Woodlands |
| Securus Pte Ltd | Island Wide | - | OM | Nil | Ang Mo Kio |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SSO | SO | Bukit Batok |
| SATS Ltd | East | - | OE | SSO | Simei |
| Excellent Security & Safety Pte Ltd | Central | Industrial / Factory | SS | SS | Hougang |
