| GATES PCM Integrated Services Pte Ltd | East | Commercial | SO | CSO | Bedok |
| Certis Group | Island Wide | Commercial | SS | SS | Marsiling |
| IGC Security Services Pte Ltd | South | Commercial | SS | SS | Marsiling |
| Soverus Pte Ltd | South | Commercial | SS | SS | Marsiling |
| ADT Integrated Security Solutions Pte. Ltd. | West | Commercial | SSO | SS | Jurong East |
| PICO Guards Pte Ltd | Central | Commercial | SSS | CSO | Clementi |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSS | Tampines |
| Union Security Services Pte. Ltd. | North | Commercial | SS | SS | Marsiling |
| Elitez Security Pte Ltd | Central | Commercial | SSS | CSO | Clementi |
| Triple ‘S’ Protection Pte Ltd | Island Wide | Commercial | SO | SSO | Bishan |
| Fervour Pte Ltd | Central | Commercial | SSO | SSO | Bishan |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SO | Bedok |
| Triple ‘S’ Protection Pte Ltd | East | Commercial | SSO | SSO | Bedok |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Bedok |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | Commercial | SSO | SSO | Tanjong Pagar |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | CSO | SSS | Woodlands |
| Certis Group | Central | Commercial | SO | SO | Bukit Batok |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SO | Bukit Batok |
| Certis Group | Central | Commercial | SO | SO | Bukit Batok |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SO | Bukit Batok |
| Prosec Services Pte Ltd | Central | Commercial | SO | SO | Bukit Batok |
| A-SAT Pte Ltd | North | Commercial | SSO | SO | Bukit Batok |
| Premier Security Co-operative Ltd | South | Commercial | SO | SO | Bukit Batok |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SO | Bukit Batok |
