| Prosegur Singapore Pte Ltd | Central | Retail / Mall | SS | SS | Bishan |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | North | School | SO | SO | Serangoon |
| SATS Ltd | East | - | OE | SO | Tampines |
| SATS Ltd | Island Wide | - | OM | Nil | Toa Payoh |
| Aspectus Consultancy Pte Ltd | Central | Mix-Development | SO | SSO | Pasir Ris |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | CSO | Bedok |
| TwinRock Global | Central | - | Security Mgt | SSS | Sengkang |
| TwinRock Global | Central | - | Security Mgt | SO | Woodlands |
| TwinRock Global | Central | - | Security Mgt | SO | Yishun |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| Star Security Services | Island Wide | - | OE | SS | Bukit Panjang |
| GoMobile Security Solutions Pte Ltd | North | Industrial / Factory | SO | SO | Woodlands |
| Aedge Services Pte Ltd | Island Wide | - | OM | SS | Pioneer |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Punggol |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Metropolis Security Systems Pte Ltd | East | Condominium | SS | SSS | Tampines West |
| Horus I (Private Limited) | Central | Retail | SO | SO | Tampines |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Dover |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SSO | MacPherson |
| Bulls-Eye Security Services Pte Ltd | Central | In-House | SSO | SSO | Pasir Ris |
| Inhouse Employer | West | In-House | OM | SSS | Tampines |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Sengkang |
| York Hotel (Private) Limited | Central | In-House | OM | CSO | Marsiling |
| Pan Pacific Serviced Suites Beach Road | South | In-House | SO | SSO | Khatib |
