| Inhouse Employer | Island Wide | Construction | OM | SS | Tampines |
| Force-One Security | North | Data Centre | SS | SS | Woodlands South |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Pioneer |
| SATS Ltd | East | - | OE | SSO | Simei |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Marsiling |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Simei |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSO | Simei |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | SSO | Bedok North |
| Elid Technology International Pte Ltd | West | Condominium | SO | SO | Choa Chu Kang |
| G4S Secure Solutions (Singapore) Pte Ltd | West | School | SO | SO | Tampines West |
| PICO Guards Pte Ltd | Central | School | SSO | SSO | Jurong East |
| Inhouse Employer | Island Wide | - | OE | CSO | Ang Mo Kio |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| Inhouse Employer | South | In-House | SSO | SO | Bedok |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Inhouse Employer | Island Wide | Construction | OM | CSO | Boon Lay |
| Elitez Security Pte Ltd | East | Condominium | SO | SO | Mountbatten |
| Inhouse Employer | East | In-House | SO | SO | Bedok |
| Premier Security Co-operative Ltd | East | Commercial | SS | SO | - |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Ademco Security Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| RAS Security Pte Ltd | North | Commercial | SSO | CSO | Yishun |
| Securus Pte Ltd | Island Wide | - | OE | SS | Marsiling |
