| Inhouse Employer | Central | In-House | SS | SS | Yishun |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Queenstown |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Toa Payoh |
| Premier Security Co-operative Ltd | Central | Healthcare | SSO | SS | Toa Payoh |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Admiralty |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SO | Woodlands |
| Inhouse Employer | East | Country Club | SO | SO | Bedok |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Horus I (Private Limited) | North | Retail | SO | SO | Tampines |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Boon Lay |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Yishun |
| Union Security Services Pte. Ltd. | Island Wide | - | SSO | SO | Bukit Batok |
| Securus Pte Ltd | North | Commercial | SO | SO | Yishun |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Soverus Pte Ltd | South | In-House | SS | SS | Woodlands South |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | CSO | Marsiling |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SS | Sengkang |
| Prosegur Singapore Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Eunos |
| Elid Technology International Pte Ltd | East | Condominium | SS | SS | Hougang |
| GWC Commercial Pte. Ltd. | Central | Commercial | SO | SSO | - |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Tampines |
| Inhouse Employer | West | School | OE | SSS | Dover |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | SS | SS | Admiralty |
