| Star Security Services | Island Wide | - | Security Mgt | SSO | Kaki Bukit |
| Pedro Investigations & Security Services Pte. Ltd. | Central | - | SSO | CSO | Bedok |
| 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 |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SSO | MacPherson |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SS | Yishun |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SS | Marsiling |
| Peregrine Security Pte. Ltd. | Island Wide | - | SS | SS | Marsiling |
| AETOS Holdings Pte Ltd | West | - | SO | SS | Buangkok |
| 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 |
| Danmax Security Management Pte Ltd | East | - | OE | CSO | Bedok |
| Strive Security Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | CSO | Yishun |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Pioneer |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SS | Pioneer |
| Acestes Pte Ltd | Central | - | Security Mgt | SO | Bedok |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | SS | Bukit Panjang |
| Star Security Services | Island Wide | - | Security Mgt | SS | Hougang |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | SSO | Bedok North |
