| Regal Security & Fire Management Services Pte Ltd | West | Dormitory | SO | SO | Bras Basah |
| G4S Secure Solutions (Singapore) Pte Ltd | North | School | SO | SO | Bras Basah |
| Force-One Security | Central | Industrial / Factory | SO | SO | Bras Basah |
| Peregrine Security Pte. Ltd. | Central | School | SO | SO | Bras Basah |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Bras Basah |
| Regal Security & Fire Management Services Pte Ltd | West | Dormitory | SO | SO | Bras Basah |
| Eagle I Security Services Pte Ltd | East | Commercial | SO | SO | Bras Basah |
| Inhouse Employer | North | In-House | SO | SO | Bras Basah |
| Fervour Pte Ltd | Central | Mix-Development | SO | SO | Bras Basah |
| Horus I (Private Limited) | Central | Retail | SO | SO | Bras Basah |
| Inhouse Employer | West | Industrial / Factory | SO | SO | Bras Basah |
| Inhouse Employer | Central | School | SO | SO | Bras Basah |
| Inhouse Employer | West | Industrial / Factory | SO | SO | Marsiling |
| Inhouse Employer | West | Industrial / Factory | SO | SSO | Boon Lay |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Force-One Security | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Force-One Security | Central | Commercial | SO | SO | Yishun |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| GATES PCM Integrated Services Pte Ltd | Central | Gov Building | SO | SS | Pioneer |
| G4S Secure Solutions (Singapore) Pte Ltd | North | School | SO | SO | Bras Basah |
