| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Marsiling |
| Security Masters Pte Ltd | North | Commercial | CSO | SSS | Bishan |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Premier Security Co-operative Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSS | Sengkang |
| Excellent Security & Safety Pte Ltd | West | Commercial | SSO | SSS | Clementi |
| RAS Security Pte Ltd | North | Commercial | OE | SS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | Commercial | SSO | SS | Choa Chu Kang |
| Resorts World Sentosa | South | Commercial | SS | SS | HarbourFront |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Simei |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SS | Pasir Ris |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SS | Pasir Ris |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Sengkang |
| Prosegur Singapore Pte Ltd | South | Commercial | SO | SO | Hougang |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | CSO | CSO | Sembawang |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | CSO | CSO | Sembawang |
| Prosegur Singapore Pte Ltd | South | Commercial | SSS | Nil | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | CSO | Nil | Sengkang |
| Prosegur Singapore Pte Ltd | South | Commercial | SSS | SO | Sengkang |
| Security & Risk Solutions Pte. Ltd. | East | Commercial | SO | SO | Punggol |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Hougang |
| Peregrine Security Pte. Ltd. | Central | Commercial | SS | SS | Sengkang |
| Certis Group | North | Commercial | SO | SO | - |
| Power Security Guard Agency Pte Ltd | North | Condominium | SO | SO | Khatib |
| Primesafe Security & Investigation Pte Ltd | Central | Condominium | SSO | SSO | Bedok |
