| Aedge Services Pte Ltd | Island Wide | - | OM | CSO | Bukit Batok |
| Inhouse Employer | Island Wide | Construction | OM | CSO | Bukit Batok |
| 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 |
| 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 |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | In-House | SS | SS | Admiralty |
| GATES PCM Integrated Services Pte Ltd | Island Wide | - | OE | SS | Pasir Ris |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SO | Tampines |
| PICO Guards Pte Ltd | Island Wide | - | OM | SO | Tampines |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Yishun |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| SATS Ltd | Island Wide | - | OM | SS | Woodlands |
| Aedge Services Pte Ltd | Island Wide | - | OM | CSO | Sengkang |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | CSO | Sengkang |
| SATS Ltd | Island Wide | - | OM | CSO | Sengkang |
| Inhouse Employer | Island Wide | Construction | OM | CSO | Sengkang |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Aedge Services Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Sengkang |
