| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| 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 |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | CSO | Choa Chu Kang |
| Fervour Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| SATS Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Securus Pte Ltd | Island Wide | - | OM | SS | Punggol |
| Acestes Pte Ltd | Island Wide | - | OM | SS | Punggol |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Punggol |
| SATS Ltd | Island Wide | - | OM | SS | Punggol |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Punggol |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Punggol |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SS | Punggol |
| Star Security Services | Island Wide | - | Security Mgt | CSO | Pasir Ris |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Pasir Ris |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Strive Security Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | CSO | Pasir Ris |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
