| Force-One Security | Central | Commercial | SO | SS | Ang Mo Kio |
| Elitez Security Pte Ltd | Central | Commercial | SSS | SSS | Tanjong Pagar |
| Elitez Security Pte Ltd | Central | Commercial | SSS | SSS | Tampines West |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | SS | SO | Marsiling |
| SATS Ltd | Island Wide | Commercial | SO | SS | Woodlands |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SSO | Tampines |
| Dragnet Smartech Security Pte Ltd | West | Commercial | SS | SSS | Queenstown |
| Prosec Services Pte Ltd | South | Commercial | SSS | SSS | Tanjong Pagar |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SSO | Tampines |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | SSS | Sengkang |
| SATS Ltd | Island Wide | Commercial | SO | SS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | CSO | Marsiling |
| Triple ‘S’ Protection Pte Ltd | Central | Commercial | SSO | SS | Buona Vista |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SSO | SO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | Island Wide | Commercial | SO | SO | Pioneer |
| Premier Security Co-operative Ltd | South | Commercial | SO | SO | Redhill |
| Dragnet Smartech Security Pte Ltd | Island Wide | Commercial | SO | SSO | Tampines |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | CSO | Marsiling |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Marsiling |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SSO | Tampines |
| Premier Security Co-operative Ltd | East | Commercial | SS | SO | - |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | - |
| Triple ‘S’ Protection Pte Ltd | East | Commercial | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | West | Commercial | SS | SS | - |
