| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SO | Woodlands |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| Reachfield Security & Safety Management Pte Ltd | Central | Gov Building | SO | SO | Pasir Ris |
| Brink's Singapore Pte Ltd | East | - | SO | SO | Pasir Ris |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SO | Choa Chu Kang |
| William Secure Solutions Pte Ltd | South | Condominium | SO | SO | Mountbatten |
| Inhouse Employer | East | School | SO | SO | Pasir Ris |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Yishun |
| Apro Asian Protection Pte Ltd | East | School | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
| Certis Group | Island Wide | - | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | South | School | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | North | School | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | South | School | SO | SO | Punggol |
| GATES PCM Integrated Services Pte Ltd | East | Condominium | SO | SO | Sengkang |
| Securus Pte Ltd | North | Commercial | SO | SO | Yishun |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SO | Bukit Batok |
| York Hotel (Private) Limited | Central | In-House | SO | SO | - |
| Inhouse Employer | Central | In-House | SO | SO | - |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | SO | SO | Bukit Gombak |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SO | Punggol |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SO | Choa Chu Kang |
| Force-One Security | North | Data Centre | OE | SO | Choa Chu Kang |
| PICO Guards Pte Ltd | Island Wide | - | OE | SO | Choa Chu Kang |
