| Force-One Security | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Dragnet Smartech Security Pte Ltd | West | Commercial | SSS | SSS | Choa Chu Kang |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SSO | Choa Chu Kang |
| Force-One Security | North | Data Centre | OE | SSS | Choa Chu Kang |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Choa Chu Kang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| TwinRock Global | Central | - | Security Mgt | SS | Choa Chu Kang |
| Acestes Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Inhouse Employer | West | In-House | OM | SS | Choa Chu Kang |
| PICO Guards Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| SATS Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Inhouse Employer | North | Commercial | SO | SSO | Choa Chu Kang |
| Soverus Pte Ltd | Island Wide | - | SSS | SS | Choa Chu Kang |
| Strive Security Pte Ltd | West | Dormitory | SO | SSO | Choa Chu Kang |
| Soverus Pte Ltd | Island Wide | - | SSS | SS | Choa Chu Kang |
| Inhouse Employer | West | In-House | OM | SS | Choa Chu Kang |
| Soverus Pte Ltd | Island Wide | - | SSS | SS | Choa Chu Kang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
