| Inhouse Employer | West | Industrial / Factory | SO | SS | Jalan Besar |
| First Security & Private Investigation (Singapore) Pte Ltd | North | Condominium | SO | SO | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | North | Commercial | SO | SO | Woodlands |
| Inhouse Employer | Central | In-House | SO | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SO | SSO | Pasir Ris |
| Artyzen Singapore | Central | Hotel | SO | SO | Sengkang |
| Elid Technology International Pte Ltd | West | Condominium | SO | SO | Choa Chu Kang |
| TwinRock Global | North | Dormitory | SO | SO | Admiralty |
| First Security & Private Investigation (Singapore) Pte Ltd | North | Condominium | SO | SSO | Woodlands |
| Certis Group | Island Wide | - | SO | Nil | Braddell |
| Certis Group | Island Wide | Commercial | SO | Nil | Braddell |
| Inhouse Employer | Central | In-House | SO | SO | Telok Blangah |
| Resorts World Sentosa | South | Commercial | SO | SO | Telok Blangah |
| Securus Pte Ltd | North | Commercial | SO | SSO | Woodlands |
| Inhouse Employer | West | Industrial / Factory | SO | SSS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | North | Shipyard / Port | SO | SO | Yishun |
| Triple ‘S’ Protection Pte Ltd | North | Shipyard / Port | SO | SSO | Woodlands |
| First Security & Private Investigation (Singapore) Pte Ltd | North | Condominium | SO | SSO | Woodlands |
| First Security & Private Investigation (Singapore) Pte Ltd | North | Condominium | SO | SSO | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SO | SSO | Woodlands |
| GWC Commercial Pte. Ltd. | Central | Commercial | SO | SSO | Woodlands |
| Inhouse Employer | East | School | SO | SO | Bedok |
| Inhouse Employer | East | School | SO | SO | Bedok |
| Inhouse Employer | East | In-House | SO | SO | Bedok |
| Inhouse Employer | East | School | SO | SO | Bedok |
