| Soverus Pte Ltd | South | In-House | SS | SS | Jurong East |
| William Secure Solutions Pte Ltd | Central | Condominium | SS | SS | Serangoon |
| Soverus Pte Ltd | South | In-House | SS | SS | Jurong East |
| SMS Investigation & Security Pte Ltd | South | Condominium | SS | SS | Marsiling |
| Certis Group | West | Depot | SS | SS | Marsiling |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Marsiling |
| Union Security Services Pte. Ltd. | North | Commercial | SS | SS | Marsiling |
| Bulls-Eye Security Services Pte Ltd | North | Condominium | SS | SS | Marsiling |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSO | Sengkang |
| Soverus Pte Ltd | Island Wide | - | SS | SS | Hougang |
| Dragnet Smartech Security Pte Ltd | Island Wide | - | SS | SS | Sengkang |
| Soverus Pte Ltd | South | In-House | SS | SS | Sengkang |
| Eagle I Security Services Pte Ltd | Island Wide | - | SS | SS | Sengkang |
| Security Masters Pte Ltd | Island Wide | - | SS | SS | Sengkang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Sengkang |
| York Hotel (Private) Limited | Central | In-House | SS | SS | Sengkang |
| Security Masters Pte Ltd | Island Wide | - | SS | SS | Sengkang |
| AGS Integration Pte. Ltd. | West | In-House | SS | SO | Bukit Batok |
| Reachfield Security & Safety Management Pte Ltd | West | Industrial / Factory | SS | SS | Lakeside |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | Lakeside |
| Security Masters Pte Ltd | Island Wide | - | SS | SS | Jurong East |
| Union Security Services Pte. Ltd. | North | Commercial | SS | SS | Hougang |
| Security Masters Pte Ltd | Island Wide | - | SS | SS | Hougang |
| Triple ‘S’ Protection Pte Ltd | East | Commercial | SS | SS | Hougang |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Hougang |
