| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SO | Choa Chu Kang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Simei |
| RAS Security Pte Ltd | North | Commercial | SSO | SO | Clementi |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SO | SO | Tuas Link |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Sembawang |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Sembawang |
| Soverus Pte Ltd | Central | Commercial | SSS | CSO | Yishun |
| RAS Security Pte Ltd | North | Commercial | SSO | Nil | Boon Lay |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Punggol |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Simei |
| Force-One Security | Central | Commercial | SO | SSO | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Simei |
| RAS Security Pte Ltd | North | Commercial | OE | CSO | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Simei |
| Force-One Security | Central | Commercial | SO | SSO | Simei |
| GoMobile Security Solutions Pte Ltd | East | Commercial | SSO | SSO | Simei |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Simei |
| Union Security Services Pte. Ltd. | North | Commercial | SS | Nil | Hougang |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Woodlands |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | CSO | Woodlands |
| Inhouse Employer | North | Commercial | SO | SSO | Boon Lay |
| Union Security Services Pte. Ltd. | North | Commercial | SS | Nil | Hougang |
