| Certis Group | Central | Commercial | SO | SS | Choa Chu Kang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Toa Payoh |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Toa Payoh |
| Resorts World Sentosa | South | Commercial | SS | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| Resorts World Sentosa | South | Commercial | SS | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| Resorts World Sentosa | South | Commercial | SS | SSS | Woodlands |
| Resorts World Sentosa | South | Commercial | SS | SS | Pasir Ris |
| Resorts World Sentosa | South | Commercial | SS | SSS | Woodlands |
| Metropolis Security Systems Pte Ltd | South | Commercial | SSS | SSS | Woodlands |
| PICO Guards Pte Ltd | Central | Commercial | SSS | SSS | Woodlands |
| Resorts World Sentosa | South | Commercial | SS | SSS | Dover |
| Securus Pte Ltd | North | Commercial | SO | SO | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SO | SSO | Jurong East |
| Force-One Security | Central | Commercial | SO | SS | Hougang |
| SMS Investigation & Security Pte Ltd | Central | Commercial | SS | SS | Hougang |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Choa Chu Kang |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | Choa Chu Kang |
| Resorts World Sentosa | South | Commercial | SS | SSS | Woodlands |
| Soverus Pte Ltd | Central | Commercial | SSS | SSS | Pioneer |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
