| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SS | Bukit Batok |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Dover |
| Soverus Pte Ltd | Central | Data Centre | SSS | SSS | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSO | Bedok |
| Star Security Services | Island Wide | - | Security Mgt | CSO | Toa Payoh |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SS | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Jurong East |
| PICO Guards Pte Ltd | Central | Commercial | SSS | CSO | Clementi |
| Inhouse Employer | Central | Hotel | SO | SSO | - |
| York Hotel (Private) Limited | Central | In-House | OM | SS | Ang Mo Kio |
| SMS Investigation & Security Pte Ltd | North | Condominium | SSO | SS | Woodlands South |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Pan Pacific Singapore | South | In-House | Security Mgt | SSS | Yishun |
| Inhouse Employer | Central | Mix-Development | OE | SSS | Tampines West |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | Nil | Dover |
| First Security & Private Investigation (Singapore) Pte Ltd | West | Condominium | SSO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SO | Bukit Batok |
| AGS Integration Pte. Ltd. | Island Wide | - | SS | SS | Punggol |
| Ascentiaa Security Management Pte Ltd | East | Condominium | SSO | SSO | Pasir Ris |
| Inhouse Employer | Central | In-House | SSS | CSO | Ang Mo Kio |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Sengkang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSO | Hougang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSO | Hougang |
| PICO Guards Pte Ltd | Island Wide | - | OE | SSS | Bedok |
