| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Tampines |
| Inhouse Employer | East | In-House | SO | SS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | School | SO | SO | Clementi |
| Inhouse Employer | Island Wide | Construction | OM | SS | Hougang |
| A-SAT Pte Ltd | North | Commercial | SSO | SS | Woodlands |
| Peregrine Security Pte. Ltd. | Central | School | SO | SO | Bras Basah |
| Reachfield Security & Safety Management Pte Ltd | South | - | OE | SSS | Jurong East |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Bedok |
| Securus Pte Ltd | Island Wide | - | OM | SS | Punggol |
| Premier Security Co-operative Ltd | East | In-House | Office Team | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Yishun |
| PICO Guards Pte Ltd | North | School | SO | SO | Yishun |
| Acestes Pte Ltd | Central | - | Security Mgt | Nil | Woodlands |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SS | Marsiling |
| PICO Guards Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| M Social Singapore | Central | Hotel | OE | SS | - |
| Inhouse Employer | South | Hotel | SO | SO | Woodlands |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| SMS Investigation & Security Pte Ltd | North | Condominium | SSO | SS | Woodlands |
| SATS Ltd | Island Wide | - | OM | CSO | Queenstown |
| Jasa Investigation & Security Services Pte Ltd | East | Healthcare | SO | SO | Pasir Ris |
| Fervour Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Inhouse Employer | Central | Hotel | OE | SSO | Boon Lay |
