| Securus Pte Ltd | Island Wide | - | OE | SO | - |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SO | - |
| Securus Pte Ltd | Island Wide | - | OE | SO | - |
| Inhouse Employer | Island Wide | - | OE | SO | - |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SO | - |
| Certis Group | Island Wide | - | SSO | SSO | Marsiling |
| Star Security Services | Island Wide | - | Security Mgt | SSS | Sengkang |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| SATS Ltd | Island Wide | - | Inves | SSS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | Security Mgt | SSS | Woodlands |
| Acestes Pte Ltd | Island Wide | - | Security Mgt | SS | Yishun |
| Acestes Pte Ltd | Island Wide | - | Security Mgt | SS | Yishun |
| Acestes Pte Ltd | Island Wide | - | Security Mgt | SSS | Woodlands |
| Star Security Services | Island Wide | - | Security Mgt | SSS | Woodlands |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | SSS | Woodlands |
| SATS Ltd | Island Wide | - | OM | SSS | Woodlands |
| Fervour Pte Ltd | Island Wide | - | OM | SSS | Woodlands |
| Concorde Security Pte Ltd | Island Wide | - | OE | SO | Yishun |
| Concorde Security Pte Ltd | Island Wide | - | OE | SSS | Lakeside |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SSS | Sengkang |
| Acestes Pte Ltd | Island Wide | - | Security Mgt | SSO | Marsiling |
| Star Security Services | Island Wide | - | Security Mgt | SS | Pioneer |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | SSS | Bishan |
