| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| PICO Guards Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | CSO | Queenstown |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Queenstown |
| Orchid Hotel Private Limited | Central | In-House | OM | CSO | Queenstown |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Queenstown |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | CSO | Boon Lay |
| Inhouse Employer | Central | Mix-Development | Security Mgt | CSO | Marsiling |
| Fervour Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| York Hotel (Private) Limited | Central | In-House | OM | CSO | Marsiling |
| Inhouse Employer | West | In-House | OM | CSO | Marsiling |
| SMS Investigation & Security Pte Ltd | Central | - | OM | CSO | Marsiling |
| Star Security Services | Island Wide | - | OE | CSO | Marsiling |
| PICO Guards Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| ProtectPlus Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | CSO | Marsiling |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | CSO | Marsiling |
| SATS Ltd | East | - | OE | CSO | Marsiling |
