| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Clementi |
| Acestes Pte Ltd | Island Wide | - | OM | SS | Clementi |
| SATS Ltd | Island Wide | - | Inves | SS | Clementi |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Clementi |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SS | Clementi |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SS | Clementi |
| SATS Ltd | East | - | OE | SS | Clementi |
| Soverus Pte Ltd | Island Wide | - | OE | SS | Clementi |
| Star Security Services | Island Wide | - | Security Mgt | SS | Clementi |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SS | Clementi |
| TwinRock Global | Central | - | Security Mgt | SS | Clementi |
| Reachfield Security & Safety Management Pte Ltd | North | School | SSS | SS | Woodlands |
| Security Masters Pte Ltd | North | Commercial | CSO | SS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | North | School | SSS | SS | Woodlands |
| Security Masters Pte Ltd | Island Wide | - | SS | SS | Woodlands |
| Kingston Property Maintenance Services Pte Ltd | Central | Mix-Development | SS | SS | Woodlands |
| Ascentiaa Security Management Pte Ltd | Island Wide | Condominium | SS | SS | Woodlands |
| Inhouse Employer | Central | Hotel | SS | SS | Woodlands |
| York Hotel (Private) Limited | Central | In-House | OM | SS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | SS | SS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | North | School | SSS | SS | Woodlands |
| SATS Ltd | Island Wide | - | OM | SS | Yishun |
| Peregrine Security Pte. Ltd. | Central | Commercial | SS | SS | Hougang |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Crowne Plaza Changi Airport | East | In-House | OE | SS | Sengkang |
