| Star Security Services | Island Wide | - | Security Mgt | SO | Tiong Bahru |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | Security Mgt | SSO | Hougang |
| Inhouse Employer | Island Wide | - | OE | SSO | Hougang |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SO | Choa Chu Kang |
| SATS Ltd | Island Wide | - | Inves | SS | Choa Chu Kang |
| Concorde Security Pte Ltd | Island Wide | - | OE | SS | Choa Chu Kang |
| Aedge Services Pte Ltd | Island Wide | - | OM | SS | Bukit Batok |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | SS | Bukit Batok |
| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SS | Hougang |
| Inhouse Employer | Island Wide | Construction | OM | SSS | MacPherson |
| Inhouse Employer | Island Wide | Construction | OM | SS | Sengkang |
| Inhouse Employer | Island Wide | Construction | OM | SS | Pioneer |
| SATS Ltd | Island Wide | - | OM | SS | Pioneer |
| Prosegur Singapore Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SS | Sengkang |
| Concorde Security Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Inhouse Employer | Island Wide | Construction | OM | SO | Sembawang |
| Inhouse Employer | Island Wide | Construction | OM | SO | Sembawang |
| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SS | Kaki Bukit |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Kaki Bukit |
| Singapore Security Force Pte Ltd | Island Wide | - | OE | SS | Kaki Bukit |
| Inhouse Employer | Island Wide | - | OE | SS | Kaki Bukit |
| Star Security Services | Island Wide | - | Security Mgt | SS | Kaki Bukit |
