| RAS Security Pte Ltd | North | Commercial | OE | SS | Yishun |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SS | Yishun |
| Inhouse Employer | Island Wide | - | OE | SS | Sembawang |
| Soverus Pte Ltd | Island Wide | - | OE | SSS | Yishun |
| SATS Ltd | East | - | OE | SSS | Yishun |
| SATS Ltd | East | - | OE | SSS | Yishun |
| Mainguard Security Services (S) Pte Ltd | Island Wide | - | OE | Nil | Pasir Ris |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Sengkang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Pioneer |
| SATS Ltd | East | - | OE | SS | Pioneer |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Sembawang |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Yishun |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Marsiling |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SSO | Marsiling |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SSO | Marsiling |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Marsiling |
| RAS Security Pte Ltd | North | Commercial | OE | SSO | Marsiling |
| RAS Security Pte Ltd | North | Commercial | OE | SSO | Marsiling |
| Force-One Security | North | Data Centre | OE | SSO | Marsiling |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSO | Simei |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Securus Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
