| SATS Ltd | Island Wide | - | Inves | CSO | Choa Chu Kang |
| SATS Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| Soverus Pte Ltd | Central | Data Centre | SSS | CSO | Choa Chu Kang |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | CSO | Choa Chu Kang |
| RAS Security Pte Ltd | North | Commercial | SSO | CSO | Choa Chu Kang |
| Star Security Services | Island Wide | - | Security Mgt | CSO | Choa Chu Kang |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | CSO | Choa Chu Kang |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Choa Chu Kang |
| ProtectPlus Pte Ltd | Island Wide | - | OE | CSO | Choa Chu Kang |
| RAS Security Pte Ltd | North | Commercial | OE | CSO | Choa Chu Kang |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | CSO | Choa Chu Kang |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| SATS Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Soverus Pte Ltd | Island Wide | - | SSO | SSO | Choa Chu Kang |
