| RAS Security Pte Ltd | East | Commercial | SS | SS | Marsiling |
| GATES PCM Integrated Services Pte Ltd | East | Commercial | SS | SS | Marsiling |
| Inhouse Employer | North | Commercial | SO | SSO | Choa Chu Kang |
| First Security & Private Investigation (Singapore) Pte Ltd | South | Commercial | SO | SSO | Pasir Ris |
| Soverus Pte Ltd | Central | Commercial | SSS | SO | Choa Chu Kang |
| Inhouse Employer | North | Commercial | SO | SS | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SS | Choa Chu Kang |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Simei |
| Certis Group | Central | Commercial | SO | SS | Choa Chu Kang |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Choa Chu Kang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SO | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SO | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Toa Payoh |
| Primesafe Security & Investigation Pte Ltd | South | Commercial | SS | SSS | Yishun |
| SMS Investigation & Security Pte Ltd | South | Commercial | SS | SSS | Yishun |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | SS | SSS | Yishun |
| GATES PCM Integrated Services Pte Ltd | Central | Commercial | SSO | SSS | Yishun |
| PICO Guards Pte Ltd | Central | Commercial | SSS | SSS | Yishun |
| SMS Investigation & Security Pte Ltd | South | Commercial | SS | SSS | Yishun |
| RAS Security Pte Ltd | North | Commercial | OE | SSS | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | OE | SSS | Bukit Batok |
| Premier Security Co-operative Ltd | South | Commercial | SO | Nil | Bukit Batok |
