| SMS Investigation & Security Pte Ltd | South | Commercial | SS | SS | Woodlands |
| Soverus Pte Ltd | South | Commercial | SS | SS | Woodlands |
| IGC Security Services Pte Ltd | Central | Condominium | SS | SS | Woodlands |
| Premier Security Co-operative Ltd | East | Commercial | SS | SS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | Woodlands |
| SMS Investigation & Security Pte Ltd | South | Condominium | SS | SS | Woodlands |
| Danmax Security Management Pte Ltd | East | Condominium | SS | SO | Tampines |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | SS | SSS | Pasir Ris |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SSS | Pasir Ris |
| Soverus Pte Ltd | South | In-House | SS | SSS | Pasir Ris |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SO | Tampines |
| FormTeam Consultancy Pte Ltd | West | Condominium | SS | SS | Jurong East |
| Metropolis Security Systems Pte Ltd | Central | Condominium | SS | SS | Jurong East |
| AGS Integration Pte. Ltd. | West | In-House | SS | CSO | Bedok |
| Reachfield Security & Safety Management Pte Ltd | West | Industrial / Factory | SS | Nil | Pioneer |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Commercial | SS | Nil | Pioneer |
| AGS Integration Pte. Ltd. | West | In-House | SS | Nil | Pioneer |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | SS | SS | Redhill |
| Kingston Property Maintenance Services Pte Ltd | Central | - | SS | SSS | Yishun |
| Kingston Property Maintenance Services Pte Ltd | Central | - | SS | SSS | Yishun |
| IGC Security Services Pte Ltd | South | Commercial | SS | SSS | Yishun |
| Reachfield Security & Safety Management Pte Ltd | West | Industrial / Factory | SS | SSS | Yishun |
| Bulls-Eye Security Services Pte Ltd | North | Condominium | SS | SSS | Yishun |
| Hawkeye Security Solutions Pte Ltd | West | Industrial / Factory | SS | SS | Woodlands |
