| G4S Secure Solutions (Singapore) Pte Ltd | North | School | SO | SO | Bras Basah |
| Hilton Garden Inn Singapore Serangoon | Central | In-House | SO | SSO | Woodlands |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| Inhouse Employer | Island Wide | Construction | OM | SS | Hougang |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Premier Security Co-operative Ltd | South | Commercial | SO | SO | Bukit Batok |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | CSO | Jurong East |
| Crowne Plaza Changi Airport | East | In-House | OE | SS | Woodlands |
| RAS Security Pte Ltd | Island Wide | Commercial | SSO | SO | Punggol |
| AGS Integration Pte. Ltd. | Island Wide | - | SS | SSS | Sengkang |
| York Hotel (Private) Limited | Central | In-House | OM | SS | Woodlands |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Security Masters Pte Ltd | Island Wide | - | SS | SS | Jurong East |
| Inhouse Employer | North | Industrial / Factory | SSO | CSO | Marsiling |
| Royal Security Management Services Pte Ltd | East | Gov Building | SO | SO | Simei |
| Orchid Hotel Private Limited | Central | In-House | OM | SS | Punggol |
| Peregrine Security Pte. Ltd. | Central | Commercial | SS | SSS | Woodlands |
| Inhouse Employer | South | In-House | SSO | SO | Bedok |
| William Secure Solutions Pte Ltd | East | Condominium | SO | SSO | Sengkang |
| Eagle I Security Services Pte Ltd | East | Commercial | SO | SO | Pasir Ris |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Queenstown |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Force-One Security | North | Data Centre | OE | SSS | Toa Payoh |
| Peregrine Security Pte. Ltd. | North | Industrial / Factory | SSO | SS | Woodlands |
| SATS Ltd | Island Wide | - | OM | SSS | Sengkang |
