| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Force-One Security | North | Data Centre | SO | SO | Serangoon |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Jurong East |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SS | Choa Chu Kang |
| Securus Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Bishan |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| Securus Pte Ltd | East | Condominium | SS | SS | - |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Clementi |
| Metropolis Security Systems Pte Ltd | Central | Industrial / Factory | SO | SSO | Commonwealth |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Sengkang |
| A-SAT Pte Ltd | East | Hotel | SSO | SSO | Bedok North |
| Triple ‘S’ Protection Pte Ltd | Island Wide | Commercial | SO | SSO | Bishan |
| TwinRock Global | Central | Hotel | SO | SO | Jurong East |
| Metropolis Security Systems Pte Ltd | East | Gov Building | SO | SO | Kaki Bukit |
| Soverus Pte Ltd | Island Wide | - | SS | SS | Hougang |
| TwinRock Global | Central | - | Security Mgt | SS | Clementi |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Managment | SSS | Pasir Ris |
| RAS Security Pte Ltd | North | Commercial | SSO | SO | Clementi |
| Furama RiverFront, Singapore | South | Hotel | OE | SS | - |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | CSO | Bukit Batok |
| Inhouse Employer | Central | Country Club | OM | CSO | Sengkang |
| Premier Security Co-operative Ltd | East | Commercial | SS | SS | Woodlands |
| Inhouse Employer | North | In-House | SO | SS | Punggol |
| Reachfield Security & Safety Management Pte Ltd | North | School | SSS | SS | Woodlands |
