| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SSO | Bukit Batok |
| GCH Pte. Ltd. | Central | In-House | SSO | SSO | Bukit Batok |
| Pedro Investigations & Security Services Pte. Ltd. | Central | - | SSO | SSO | Bukit Batok |
| Soverus Pte Ltd | South | In-House | SSO | SSO | Bukit Batok |
| Ranger Investigation & Security Services Pte Ltd | East | In-House | SSO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Bukit Batok |
| Ademco Security Pte Ltd | West | Industrial / Factory | SSO | SSO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SSO | SSO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Bukit Batok |
| SATS Ltd | Island Wide | Commercial | SO | SO | Bukit Batok |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SSS | Bukit Batok |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SSS | Bukit Batok |
| Metropolis Security Systems Pte Ltd | South | Commercial | SSO | SSO | Bukit Batok |
| AGS Integration Pte. Ltd. | West | Condominium | SSO | SSO | Bukit Batok |
| Securistate Pte Ltd | West | Industrial / Factory | SSO | SSO | Bukit Batok |
| William Secure Solutions Pte Ltd | Central | Embassy | SSO | SSO | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | SSO | Nil | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | OE | SS | Bukit Batok |
| Certis Group | Central | Commercial | SO | SS | Bukit Batok |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Bukit Batok |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SS | Bukit Batok |
| Star Security Services | Island Wide | - | Security Mgt | SS | Bukit Batok |
