| Prospect Protection Pte Ltd | West | Industrial / Factory | SO | SO | Bukit Gombak |
| King's Security and Safety Management Pte Ltd | Island Wide | - | Sec Tech / Eng | SO | Sengkang |
| Premier Security Co-operative Ltd | Central | Commercial | SS | SS | Hougang |
| SATS Ltd | Island Wide | - | OM | Nil | Commonwealth |
| RAS Security Pte Ltd | Island Wide | Commercial | SSO | SS | Sengkang |
| Danmax Security Management Pte Ltd | East | Condominium | SS | SO | Tampines |
| Inhouse Employer | North | In-House | SO | SSO | Woodlands |
| York Hotel (Private) Limited | Central | In-House | OM | SO | Serangoon |
| Inhouse Employer | Central | Mix-Development | OE | SSS | Tampines West |
| SATS Ltd | Island Wide | - | OM | Nil | Ang Mo Kio |
| Inhouse Employer | East | Country Club | SO | SO | Tampines |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SS | Choa Chu Kang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | Nil | Jurong East |
| Global Ritz Protection (Security Services) Pte Ltd | West | Industrial / Factory | SS | SS | Boon Lay |
| Total Protection Solutions Pte Ltd | North | - | SSO | SO | Bukit Batok |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | CSO | Bedok |
| Inhouse Employer | Central | In-House | SSS | CSO | Yishun |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Orchid Hotel Private Limited | Central | In-House | OM | Nil | Yishun |
| Inhouse Employer | East | In-House | SO | SS | Sengkang |
| Concorde Security Pte Ltd | Island Wide | - | OE | SO | Yishun |
| Jasa Investigation & Security Services Pte Ltd | East | Industrial / Factory | SO | SO | Yishun |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| SATS Ltd | Island Wide | - | Inves | SSO | Boon Lay |
