| Inhouse Employer | West | In-House | OM | SSS | Sengkang |
| Acestes Pte Ltd | Central | - | Security Mgt | SO | Bukit Batok |
| Force-One Security | North | Data Centre | OE | SSS | Woodlands |
| Inhouse Employer | Central | In-House | SS | SS | Hougang |
| Security Masters Pte Ltd | Central | Data Centre | SS | SSS | Yishun |
| Dragnet Smartech Security Pte Ltd | West | Commercial | SSS | SSS | Jurong East |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SS | SS | Marsiling |
| Soverus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Orchid Hotel Private Limited | Central | In-House | OM | SS | Tampines |
| Ranger Investigation & Security Services Pte Ltd | South | In-House | SSO | CSO | Bedok |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | SS | Woodlands |
| SATS Ltd | East | - | OE | CSO | Marsiling |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Punggol |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | In-House | SS | SS | Woodlands |
| York Hotel (Private) Limited | Central | In-House | OM | SSS | Yishun |
| Pan Pacific Singapore | South | In-House | Security Mgt | SSO | Hougang |
| SMS Security | East | Retail / Mall | SO | SO | Eunos |
| GATES PCM Integrated Services Pte Ltd | Central | School | SO | SO | Punggol |
| SATS Ltd | Island Wide | - | OM | SSO | Hougang |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SSO | Bishan |
| Crowne Plaza Changi Airport | East | Hotel | SO | SO | Tampines |
| Premier Security Co-operative Ltd | West | Dormitory | SO | SSO | Boon Lay |
| Sands Global Pte Ltd | Central | Condominium | SS | SS | Khatib |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | SS | Jurong East |
