| Elid Technology International Pte Ltd | East | Condominium | SO | SO | Mountbatten |
| C&W Services (S) Pte Ltd | Central | Gov Building | SO | SO | Mountbatten |
| Metropolis Security Systems Pte Ltd | Central | Condominium | SO | SO | Mountbatten |
| TwinRock Global | East | Condominium | SO | SO | Mountbatten |
| Elitez Security Pte Ltd | East | Condominium | SO | SO | Mountbatten |
| First Security & Private Investigation (Singapore) Pte Ltd | South | Commercial | SO | SO | Punggol |
| Inhouse Employer | East | In-House | SO | SO | Punggol |
| King's Security and Safety Management Pte Ltd | Island Wide | - | Sec Tech / Eng | SO | Sengkang |
| Inhouse Employer | West | In-House | OM | SO | Yishun |
| Acestes Pte Ltd | Island Wide | - | OM | SO | Yishun |
| Securus Pte Ltd | Island Wide | - | OE | SO | Yishun |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SO | Yishun |
| TwinRock Global | Central | - | Security Mgt | SO | Yishun |
| Fervour Pte Ltd | Island Wide | - | OM | SO | Yishun |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SO | Sengkang |
| King's Security and Safety Management Pte Ltd | Island Wide | - | Sec Tech / Eng | SO | Sengkang |
| Inhouse Employer | West | In-House | OM | SO | Sengkang |
| SATS Ltd | Island Wide | - | Inves | SO | Sengkang |
| Inhouse Employer | West | In-House | OM | SO | Sengkang |
| PICO Guards Pte Ltd | Island Wide | - | OM | SO | Sengkang |
| SATS Ltd | Island Wide | - | OM | SO | Sengkang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SO | Sengkang |
| Inhouse Employer | South | In-House | SO | SO | Pasir Panjang |
| Inhouse Employer | South | In-House | SO | SO | Pasir Panjang |
| Force-One Security | North | Data Centre | SS | SO | Sengkang |
