| Metropolis Security Systems Pte Ltd | East | Gov Building | SSO | SS | Aljunied |
| Metropolis Security Systems Pte Ltd | East | Gov Building | SSO | SS | Aljunied |
| Aigle Security Pte Ltd | South | Condominium | SSO | SS | Aljunied |
| Aigle Security Pte Ltd | South | Condominium | SSO | SS | Aljunied |
| Ranger Investigation & Security Services Pte Ltd | South | In-House | SSO | CSO | Bedok |
| A-SAT Pte Ltd | South | Mix-Development | SSO | CSO | Bedok |
| ADT Integrated Security Solutions Pte. Ltd. | West | Commercial | SSO | SS | Punggol |
| Inhouse Employer | Central | Hotel | SSO | SS | Simei |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSO | SS | Yishun |
| A-SAT Pte Ltd | Island Wide | - | SSO | SS | Yishun |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSO | SS | Yishun |
| A-SAT Pte Ltd | Island Wide | - | SSO | SSS | Boon Lay |
| A-SAT Pte Ltd | Island Wide | - | SSO | CSO | Bukit Panjang |
| A-SAT Pte Ltd | Island Wide | - | SSO | CSO | Bukit Panjang |
| TwinRock Global | West | Condominium | SSO | SSS | Jurong East |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Sengkang |
| SMS Security | East | Mix-Development | SSO | SS | Simei |
| Inhouse Employer | North | Industrial / Factory | SSO | SSS | Marsiling |
| Peregrine Security Pte. Ltd. | North | Commercial | SSO | SSO | Ang Mo Kio |
| Union Security Services Pte. Ltd. | North | Commercial | SSO | SSO | Ang Mo Kio |
| Peregrine Security Pte. Ltd. | North | Healthcare | SSO | SSO | Ang Mo Kio |
| Union Security Services Pte Ltd | North | Industrial / Factory | SSO | SSO | Ang Mo Kio |
| Ranger Investigation & Security Services Pte Ltd | East | In-House | SSO | CSO | Bedok |
| Union Security Services Pte. Ltd. | North | Commercial | SSO | SSO | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | CSO | Bedok |
