| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SSO | Boon Lay |
| Force-One Security | North | Data Centre | OE | SSO | Simei |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Crowne Plaza Changi Airport | East | In-House | OE | SS | Sengkang |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Sengkang |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Sengkang |
| Inhouse Employer | Island Wide | - | OE | CSO | Marsiling |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| SATS Ltd | East | - | OE | CSO | Pasir Ris |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Inhouse Employer | West | School | OE | SO | Woodlands |
| Concorde Security Pte Ltd | Island Wide | - | OE | SO | Yishun |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| SATS Ltd | East | - | OE | CSO | Pasir Ris |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | CSO | Pasir Ris |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | CSO | Pasir Ris |
| Star Security Services | Island Wide | - | OE | CSO | Pasir Ris |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| ProtectPlus Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Inhouse Employer | Island Wide | - | OE | CSO | Pasir Ris |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | CSO | Pasir Ris |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | CSO | Pasir Ris |
