| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSO | Simei |
| SECOM Singapore Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| GATES PCM Integrated Services Pte Ltd | Central | Gov Building | SO | SS | Pioneer |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SSS | Punggol |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Sengkang |
| Inhouse Employer | West | School | SO | CSO | Bukit Panjang |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | SS | Admiralty |
| Metropolis Security Systems Pte Ltd | West | Condominium | SO | SO | Bukit Panjang |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Hougang |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Yishun |
| Mainguard Security Services (S) Pte Ltd | West | - | SS | SS | - |
| Certis Group | Central | School | SS | SS | Marsiling |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| SATS Ltd | Island Wide | Commercial | SO | SO | Hougang |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | CSO | Bedok |
| Eagle I Security Services Pte Ltd | Island Wide | - | SS | SSS | Choa Chu Kang |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Pioneer |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Hougang |
| Soverus Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSO | - |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | SS | SS | Tampines |
| Resorts World Sentosa | South | Commercial | SO | SSO | Bukit Batok |
