| Fervour Pte Ltd | East | School | SSO | SSO | Simei |
| Regal Security & Fire Management Services Pte Ltd | Central | Commercial | SO | SO | Hougang |
| SMS Security | Central | Gov Building | SO | SO | Tampines West |
| Securus Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Guthrie FMC Security Pte Ltd | West | Dormitory | SO | SO | Bukit Gombak |
| AGS Integration Pte. Ltd. | West | In-House | SS | CSO | Woodlands |
| Union Security Services Pte. Ltd. | North | - | SSO | SSS | Yishun |
| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SSO | Marsiling |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Yishun |
| Security Masters Pte Ltd | North | Commercial | CSO | SS | Woodlands |
| Orchid Hotel Private Limited | Central | In-House | OM | CSO | Toa Payoh |
| Inhouse Employer | Central | In-House | SS | CSO | Pioneer |
| York Hotel (Private) Limited | Central | In-House | OM | SSO | Hougang |
| Novotel Singapore on Stevens | Central | Hotel | SO | SO | Jurong East |
| TwinRock Global | Central | - | Security Mgt | CSO | Marsiling |
| Premier Security Co-operative Ltd | South | Commercial | SS | SSS | Tanjong Pagar |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Acestes Pte Ltd | Island Wide | - | Security Mgt | SSO | Marsiling |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Aedge Services Pte Ltd | Island Wide | - | OM | SS | Bukit Batok |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | Nil | Bukit Batok |
| Reachfield Security & Safety Management Pte Ltd | Central | Mix-Development | SO | SSO | Bukit Batok |
| Inhouse Employer | Island Wide | Construction | OM | CSO | Boon Lay |
| SATS Ltd | Island Wide | - | OM | CSO | Pasir Ris |
