| Force-One Security | Central | Commercial | SO | SO | Bukit Batok |
| GWC Commercial Pte. Ltd. | Central | Commercial | SO | SO | Bukit Batok |
| Securus Pte Ltd | Island Wide | - | OE | SO | Bukit Batok |
| Inhouse Employer | North | In-House | SO | SO | Bukit Batok |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SO | Bukit Batok |
| M Social Singapore | Central | Hotel | Sec Tech / Eng | SO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SO | Bukit Batok |
| SECOM Singapore Pte Ltd | Island Wide | - | OE | SO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SO | Bukit Batok |
| Inhouse Employer | Central | Mix-Development | Security Mgt | SO | Yishun |
| York Hotel (Private) Limited | Central | In-House | OM | SO | Yishun |
| Soverus Pte Ltd | Island Wide | - | SSS | SO | Jurong East |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | SS | SO | Marsiling |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SO | Tampines |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | SO | Tampines |
| Soverus Pte Ltd | Island Wide | - | SSO | SO | Tampines |
| Inhouse Employer | Central | Mix-Development | Security Mgt | SO | Sengkang |
| SATS Ltd | Island Wide | - | OM | SO | Sengkang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SO | Sengkang |
| Orchid Hotel Private Limited | Central | In-House | OM | SO | Sengkang |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SO | Sengkang |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | SO | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SO | Yishun |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SSO | SO | Bukit Batok |
| Premier Security Co-operative Ltd | West | Dormitory | SO | SO | Bukit Batok |
