| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SSO | SSO | Bukit Batok |
| A-SAT Pte Ltd | North | Commercial | SSO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Bukit Batok |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SSO | Bukit Batok |
| GWC Commercial Pte. Ltd. | Central | Commercial | SO | SSO | - |
| Securus Pte Ltd | Island Wide | Commercial | SO | SO | Tampines |
| Royal Security Management Services Pte Ltd | East | Commercial | SO | SO | Tampines |
| Securus Pte Ltd | Island Wide | Commercial | SO | SO | Punggol |
| Securus Pte Ltd | Island Wide | Commercial | SO | SO | Punggol |
| Eagle I Security Services Pte Ltd | East | Commercial | SS | SO | Tampines |
| Focal Investigation & Security Agency Pte Ltd | South | Commercial | SO | SO | Tampines |
| Eagle I Security Services Pte Ltd | East | Commercial | SS | SO | Tampines |
| Union Security Services Pte. Ltd. | East | Commercial | SSO | SO | Tampines |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | SS | SO | Yishun |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | Woodlands |
| Eagle I Security Services Pte Ltd | East | Commercial | SS | SS | Woodlands |
| Securus Pte Ltd | East | Commercial | SS | SS | Woodlands |
| Jasa Investigation & Security Services Pte Ltd | Central | Commercial | SS | SS | Woodlands |
| SMS Investigation & Security Pte Ltd | South | Commercial | SS | SS | Woodlands |
| Soverus Pte Ltd | South | Commercial | SS | SS | Woodlands |
| Premier Security Co-operative Ltd | East | Commercial | SS | SS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Panjang |
| Eagle I Security Services Pte Ltd | East | Commercial | SO | SO | Tampines |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | SS | SSS | Pasir Ris |
