| A-SAT Pte Ltd | North | Commercial | SSO | SS | Woodlands |
| GATES PCM Integrated Services Pte Ltd | East | Commercial | SO | CSO | Bedok |
| Premier Security Co-operative Ltd | Central | Commercial | SSO | SS | Farrer Park |
| Concorde Security Pte Ltd | Central | Commercial | SO | SS | Farrer Park |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Jurong East |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SO | SO | MacPherson |
| PICO Guards Pte Ltd | Central | Commercial | SSO | SS | Tiong Bahru |
| Excellent Security & Safety Pte Ltd | East | Commercial | SSO | SS | Aljunied |
| Force-One Security | Central | Commercial | SO | SO | Hougang |
| Royal Security Management Services Pte Ltd | East | Commercial | SO | SO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SO | SO | Pasir Ris |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | CSO | Bedok |
| Union Security Services Pte. Ltd. | North | Commercial | SS | SS | Bukit Panjang |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Triple ‘S’ Protection Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Triple ‘S’ Protection Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Securus Pte Ltd | Island Wide | Commercial | OE | SS | Admiralty |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Premier Security Co-operative Ltd | South | Commercial | SS | SS | Pioneer |
| Premier Security Co-operative Ltd | South | Commercial | SS | SS | Pioneer |
| Force-One Security | Central | Commercial | SO | SSO | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | CSO | Bedok |
| Certis Group | Central | Commercial | SO | SSO | - |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Hougang |
| Elitez Security Pte Ltd | Central | Commercial | SO | SO | Woodlands |
