| 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 | Woodlands |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Choa Chu Kang |
| Premier Security Co-operative Ltd | East | Commercial | SO | Nil | Simei |
| Peregrine Security Pte. Ltd. | Central | Commercial | SS | SSS | Woodlands |
| RAS Security Pte Ltd | North | Commercial | OE | SSS | Toa Payoh |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Triple ‘S’ Protection Pte Ltd | East | Commercial | SO | SSO | Pasir Ris |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Buona Vista |
| Reachfield Security & Safety Management Pte Ltd | North | Commercial | SO | SO | Woodlands |
| Resorts World Sentosa | South | Commercial | SS | SSS | Dover |
| Peregrine Security Pte. Ltd. | Central | Commercial | SS | SSS | Woodlands |
| Peregrine Security Pte. Ltd. | Central | Commercial | SS | SSS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | Lakeside |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SO | SSO | Pasir Ris |
| Prosegur Singapore Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | CSO | Yishun |
| Metropolis Security Systems Pte Ltd | South | Commercial | SSS | SSS | Tanjong Pagar |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| Prosegur Singapore Pte Ltd | East | Commercial | SSO | Nil | Pasir Ris |
| Certis Group | Island Wide | Commercial | SO | Nil | Braddell |
| Resorts World Sentosa | South | Commercial | SO | SO | Telok Blangah |
| Securus Pte Ltd | North | Commercial | SO | SSO | Woodlands |
