| G4S Secure Solutions (Singapore) Pte Ltd | North | School | SSO | SSO | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSO | Bukit Batok |
| SMS Security | East | Mix-Development | SSO | SS | Aljunied |
| Singapore Security Force Pte Ltd | Central | Mix-Development | SSO | SO | Kaki Bukit |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | CSO | Bedok |
| Park Regis by Prince, Singapore | Central | Hotel | SSO | SS | Aljunied |
| Dragnet Smartech Security Pte Ltd | East | Commercial | SSO | SS | Aljunied |
| Aigle Security Pte Ltd | South | Condominium | SSO | SS | Aljunied |
| AGS Integration Pte. Ltd. | East | Condominium | SSO | SSO | Bedok North |
| Prosec Services Pte Ltd | East | Data Centre | SSO | SSO | Bedok North |
| Jasa Investigation & Security Services Pte Ltd | East | Condominium | SSO | SSO | Bedok Reservoir |
| Acestes Pte Ltd | East | Commercial | SSO | SSO | Bedok North |
| Soverus Pte Ltd | Island Wide | - | SSO | SSO | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SSO | Jurong East |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | SSO | Jurong East |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SSO | SSO | Jurong East |
| ADT Integrated Security Solutions Pte. Ltd. | West | Commercial | SSO | SSO | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSO | Jurong East |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Jurong East |
| AETOS Holdings Pte Ltd | Island Wide | Commercial | SSO | SSO | Jurong East |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SSO | SSO | Jurong East |
| SMS Security | East | Mix-Development | SSO | SS | Aljunied |
| TwinRock Global | West | Condominium | SSO | SSO | Woodlands |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Boon Lay |
| SMS Investigation & Security Pte Ltd | Central | Office Building | SSO | SS | Aljunied |
