| Storm Protection Pte Ltd | West | Industrial / Factory | SS | SS | Joo Koon |
| Premier Security Co-operative Ltd | Central | - | SS | SSO | Simei |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | CSO | Boon Lay |
| Union Security Services Pte. Ltd. | Central | Industrial / Factory | SS | SO | - |
| Premier Security Co-operative Ltd | East | Commercial | SS | SO | - |
| IGC Security Services Pte Ltd | Central | Condominium | SS | SO | - |
| Chang & Chang Security Management Pte. Ltd. | Central | Condominium | SS | SO | - |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | - |
| Dragnet Smartech Security Pte Ltd | Central | Condominium | SS | SS | - |
| Reachfield Security & Safety Management Pte Ltd | West | Industrial / Factory | SS | SS | - |
| Uniforce Security Services Pte Ltd | Central | Condominium | SS | SS | - |
| SMS Investigation & Security Pte Ltd | South | Condominium | SS | SS | - |
| Eagle I Security Services Pte Ltd | Island Wide | - | SS | SS | - |
| Reachfield Security & Safety Management Pte Ltd | West | Commercial | SS | SS | - |
| Eagle I Security Services Pte Ltd | Island Wide | - | SS | SS | - |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | SS | SS | Lakeside |
| Kingston Property Maintenance Services Pte Ltd | Central | Mix-Development | SS | SSS | Pasir Ris |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | SS | Simei |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | SS | SS | Pioneer |
| York Hotel (Private) Limited | Central | In-House | SS | SS | Sengkang |
| Security Masters Pte Ltd | Central | Data Centre | SS | SS | Hougang |
| PICO Guards Pte Ltd | North | Data Centre | SS | SS | Hougang |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Hougang |
| Kingston Property Maintenance Services Pte Ltd | Central | Mix-Development | SS | SS | Hougang |
