| Securus Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Strive Security Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Legion Protection Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Aigle Security Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Legion Protection Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Aigle Security Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | SS | Admiralty |
| SATS Ltd | Island Wide | - | OM | CSO | Bukit Batok |
| Aedge Services Pte Ltd | Island Wide | - | OM | CSO | Bukit Batok |
| Pedro Investigations & Security Services Pte. Ltd. | Central | - | SSO | CSO | Bedok |
| Dragnet Smartech Security Pte Ltd | East | - | SSO | CSO | Bedok |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SSS | Bukit Panjang |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Bukit Panjang |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | SSO | Bedok North |
| Aigle Security Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Admiralty |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | SS | Admiralty |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Aigle Security Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | CSO | Yishun |
| GATES PCM Integrated Services Pte Ltd | Island Wide | - | OE | SS | Pasir Ris |
