| SATS Ltd | Island Wide | - | OM | CSO | Marsiling |
| TwinRock Global | Central | - | Security Mgt | CSO | Marsiling |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Marsiling |
| Focus Security Services Pte Ltd | Island Wide | - | SS | CSO | Marsiling |
| Force-One Security | North | Data Centre | SS | CSO | Marsiling |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | Security Mgt | CSO | Marsiling |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Force-One Security | North | Data Centre | SO | SSO | Marsiling |
| Orchid Hotel Private Limited | Central | In-House | OM | CSO | Marsiling |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| TwinRock Global | Central | - | Security Mgt | CSO | Marsiling |
| Certis Group | Island Wide | - | SSO | SSO | Marsiling |
| Inhouse Employer | North | Industrial / Factory | SSO | SSO | Marsiling |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SSO | Marsiling |
| Acestes Pte Ltd | Island Wide | - | Security Mgt | SSO | Marsiling |
| Acestes Pte Ltd | Central | - | Security Mgt | SSO | Marsiling |
| Orchid Hotel Private Limited | Central | In-House | OM | SSO | Marsiling |
| Inhouse Employer | West | School | OE | SSO | Marsiling |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Inhouse Employer | North | Industrial / Factory | SSO | CSO | Marsiling |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SS | MacPherson |
| Securus Pte Ltd | Island Wide | - | OE | SS | MacPherson |
| Primesafe Security & Investigation Pte Ltd | Island Wide | - | OE | SS | MacPherson |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | OE | SS | MacPherson |
