| Inhouse Employer | Central | Country Club | OM | SS | Choa Chu Kang |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | CSO | Pasir Ris |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | CSO | SSS | Jurong East |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Dragnet Smartech Security Pte Ltd | Island Wide | Commercial | SO | SSO | Tampines |
| SATS Ltd | East | - | OE | SS | Woodlands |
| Certis Group | Central | School | SS | SS | Bukit Panjang |
| M Social Singapore | Central | Hotel | Sec Tech / Eng | SO | Bukit Batok |
| Acestes Pte Ltd | Central | - | Security Mgt | SO | Tiong Bahru |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Punggol |
| Soverus Pte Ltd | Island Wide | - | SSS | SSS | Yishun |
| Acestes Pte Ltd | Central | - | Security Mgt | Nil | Yishun |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | SS | SSS | Pasir Ris |
| SMS Investigation & Security Pte Ltd | South | Condominium | SS | SS | - |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SO | Bukit Batok |
| Acestes Pte Ltd | Island Wide | - | OM | SS | Punggol |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SSO | Choa Chu Kang |
| Inhouse Employer | East | In-House | SO | SO | - |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | SS | Pioneer |
| PICO Guards Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Inhouse Employer | Central | In-House | SSS | SSS | Yishun |
| SMS Investigation & Security Pte Ltd | Central | Office Building | SSO | SS | Aljunied |
| Force-One Security | North | Data Centre | SS | SSS | Yishun |
