| Soverus Pte Ltd | South | Commercial | SS | SS | Hougang |
| Certis Group | South | Healthcare | SS | SS | Hougang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | CSO | Marsiling |
| Kingston Property Maintenance Services Pte Ltd | Central | - | SS | SSS | Tanjong Pagar |
| William Secure Solutions Pte Ltd | Central | Condominium | SS | SS | Ang Mo Kio |
| Certis Group | South | Healthcare | SS | SS | Ang Mo Kio |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Ang Mo Kio |
| Ascentiaa Security Management Pte Ltd | Island Wide | Condominium | SS | SS | Boon Lay |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | SS | SO | Marsiling |
| Dragnet Smartech Security Pte Ltd | West | Commercial | SS | SSS | Queenstown |
| Storm Protection Pte Ltd | West | Industrial / Factory | SS | SS | Joo Koon |
| Premier Security Co-operative Ltd | Central | - | SS | SSO | Simei |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | CSO | Boon Lay |
| Union Security Services Pte. Ltd. | Central | Industrial / Factory | SS | SO | - |
| Premier Security Co-operative Ltd | East | Commercial | SS | SO | - |
| IGC Security Services Pte Ltd | Central | Condominium | SS | SO | - |
| Chang & Chang Security Management Pte. Ltd. | Central | Condominium | SS | SO | - |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | - |
| Dragnet Smartech Security Pte Ltd | Central | Condominium | SS | SS | - |
| Reachfield Security & Safety Management Pte Ltd | West | Industrial / Factory | SS | SS | - |
| Uniforce Security Services Pte Ltd | Central | Condominium | SS | SS | - |
| SMS Investigation & Security Pte Ltd | South | Condominium | SS | SS | - |
| Eagle I Security Services Pte Ltd | Island Wide | - | SS | SS | - |
| Reachfield Security & Safety Management Pte Ltd | West | Commercial | SS | SS | - |
| Eagle I Security Services Pte Ltd | Island Wide | - | SS | SS | - |
