| Certis Group | Central | Commercial | SO | CSO | Bedok |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| PICO Guards Pte Ltd | Central | Commercial | SSS | CSO | Bedok |
| Pedro Investigations & Security Services Pte. Ltd. | Central | - | SSO | CSO | Bedok |
| Certis Group | Central | Commercial | SO | CSO | Bedok |
| Pedro Investigations & Security Services Pte. Ltd. | Central | - | SSO | CSO | Bedok |
| GATES PCM Integrated Services Pte Ltd | East | Commercial | SO | CSO | Bedok |
| Aigle Security Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Eagle I Security Services Pte Ltd | East | - | SO | CSO | Bedok |
| Pedro Investigations & Security Services Pte. Ltd. | Central | - | SSO | CSO | Bedok |
| Union Security Services Pte. Ltd. | North | - | SSO | CSO | Bedok |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | CSO | Bedok |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | CSO | Bedok |
| GATES PCM Integrated Services Pte Ltd | East | Commercial | SO | CSO | Bedok |
| Soverus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| GATES PCM Integrated Services Pte Ltd | East | Commercial | SO | CSO | Bedok |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | CSO | Bedok |
| Soverus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Bedok |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Bedok |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | CSO | Bedok |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Bedok |
