| Securus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| PICO Guards Pte Ltd | Island Wide | - | OE | SSO | MacPherson |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSO | MacPherson |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SS | Yishun |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Securus Pte Ltd | Island Wide | Commercial | OE | SS | Marsiling |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SS | Marsiling |
| Peregrine Security Pte. Ltd. | Island Wide | - | SS | SS | Marsiling |
| SMS Investigation & Security Pte Ltd | Island Wide | - | SSO | CSO | Bedok |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Bedok |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Aigle Security Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Strive Security Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | CSO | Yishun |
| A+ Officers Security Pte Ltd | Island Wide | Construction | SO | SO | Hougang |
| Inhouse Employer | Island Wide | Construction | OM | SS | Sengkang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Pioneer |
| SATS Ltd | Island Wide | Commercial | SO | SS | Woodlands |
| SATS Ltd | Island Wide | Commercial | APO | SO | Yishun |
| Star Security Services | Island Wide | - | Security Mgt | SS | Hougang |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | SSO | Bedok North |
| Aedge Services Pte Ltd | Island Wide | - | OM | CSO | Bukit Batok |
| Inhouse Employer | Island Wide | Construction | OM | CSO | Bukit Batok |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | CSO | Bukit Batok |
