| Certis Group | Island Wide | - | SO | Nil | Braddell |
| Certis Group | Island Wide | Commercial | SO | Nil | Braddell |
| Certis Group | North | - | SO | Nil | Marsiling |
| Inhouse Employer | North | In-House | SO | Nil | Marsiling |
| SATS Ltd | Island Wide | - | OM | Nil | Serangoon |
| SATS Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| SATS Ltd | Island Wide | - | Inves | Nil | Yishun |
| Star Security Services | Island Wide | - | Security Mgt | Nil | Yishun |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | Nil | Yishun |
| Mainguard Security Services (S) Pte Ltd | Island Wide | - | OE | Nil | Pasir Ris |
| SATS Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| SATS Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| Brink's Singapore Pte Ltd | East | - | SO | Nil | Tampines |
| Acestes Pte Ltd | Central | - | Security Mgt | Nil | Yishun |
| Inhouse Employer | West | In-House | OM | Nil | Clementi |
| Prosegur Singapore Pte Ltd | South | Commercial | SSS | Nil | Sengkang |
| Orchid Hotel Private Limited | Central | In-House | OM | Nil | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | CSO | Nil | Sengkang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Grand Copthorne Waterfront Hotel | Central | Hotel | Security Managment | CSO | Jurong East |
| Danmax Security Management Pte Ltd | East | - | OE | CSO | Bedok |
