| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| ProtectPlus Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Inhouse Employer | Island Wide | - | OE | CSO | Pasir Ris |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | CSO | Pasir Ris |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Pasir Ris |
| Soverus Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Soverus Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Soverus Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSS | CSO | Marsiling |
| ProtectPlus Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSS | CSO | Marsiling |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| SATS Ltd | East | - | OE | CSO | Marsiling |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Peregrine Security Pte. Ltd. | Central | - | SSO | CSO | Marsiling |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SS | Bukit Panjang |
| 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 |
