| PICO Guards Pte Ltd | Island Wide | - | OM | SS | Pioneer |
| Orchid Hotel Private Limited | Central | In-House | OM | SS | Pioneer |
| SATS Ltd | Island Wide | - | OM | SS | Pioneer |
| 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 |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SS | Bedok |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Bedok |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SS | Yishun |
| Soverus Pte Ltd | Island Wide | - | SS | SS | Hougang |
| Inhouse Employer | North | Industrial / Factory | SSO | SS | Yishun |
| TwinRock Global | Central | - | Security Mgt | SS | Tampines |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SS | Tampines |
| SECOM Singapore Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Sengkang |
| Stalwart Security Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Sengkang |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Soverus Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Aigle Security Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Dragnet Smartech Security Pte Ltd | Island Wide | - | SS | SS | Sengkang |
| Soverus Pte Ltd | South | In-House | SS | SS | Sengkang |
