| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SS | Kranji |
| Star Security Services | Island Wide | - | Security Mgt | SS | - |
| Inhouse Employer | West | School | OE | SS | Kranji |
| G4S Secure Solutions (Singapore) Pte Ltd | East | School | SO | SS | Punggol |
| G4S Secure Solutions (Singapore) Pte Ltd | East | School | SO | SS | Punggol |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SS | Dover |
| Inhouse Employer | South | In-House | OE | SS | Dover |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Dover |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Dover |
| TwinRock Global | Central | - | Security Mgt | SS | Dover |
| Certis Group | North | - | SO | SS | Woodlands |
| Bulls-Eye Security Services Pte Ltd | North | Condominium | SS | SS | Woodlands |
| PICO Guards Pte Ltd | North | Industrial / Factory | SS | SS | Woodlands |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Woodlands |
| Star Security Services | Island Wide | - | Security Mgt | SS | - |
| Star Security Services | Island Wide | - | Security Mgt | SS | - |
| Pan Pacific Singapore | South | In-House | Security Mgt | SS | - |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SS | - |
| Security & Risk Solutions Pte. Ltd. | Central | In-House | RSOC/CAMS Op | SS | - |
| SATS Ltd | Island Wide | - | Inves | SS | - |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SS | Punggol |
| York Hotel (Private) Limited | Central | In-House | OM | SS | - |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SS | - |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SS | - |
| Crowne Plaza Changi Airport | East | In-House | OM | SS | Punggol |
