| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SSO | - |
| RAS Security Pte Ltd | North | Commercial | SSO | Nil | Boon Lay |
| Titanium Safety & Security Pte Ltd | North | Dormitory | SO | SSO | Sengkang |
| Inhouse Employer | North | In-House | SO | SS | Tuas Link |
| A-SAT Pte Ltd | North | Mix-Development | SSO | SO | Clementi |
| RAS Security Pte Ltd | North | Commercial | OE | CSO | Woodlands |
| Premier Security Co-operative Ltd | North | School | SSS | CSO | Woodlands |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Simei |
| Union Security Services Pte. Ltd. | North | Commercial | SS | Nil | Hougang |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Woodlands |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Woodlands |
| Inhouse Employer | North | Commercial | SO | SSO | Boon Lay |
| Union Security Services Pte. Ltd. | North | Commercial | SS | Nil | Hougang |
| Inhouse Employer | North | In-House | SO | SS | Yishun |
| RAS Security Pte Ltd | North | Commercial | SSO | SSS | Yishun |
| Force-One Security | North | Data Centre | SS | SS | Bishan |
| Inhouse Employer | North | In-House | SO | SO | Woodlands |
| Inhouse Employer | North | In-House | SO | SO | Woodlands |
| Inhouse Employer | North | In-House | SO | SO | Woodlands |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SSO | Sembawang |
| Union Security Services Pte. Ltd. | North | Commercial | SS | SSO | Sembawang |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Bukit Batok |
| Fervour Pte Ltd | North | Data Centre | SO | SSO | Woodlands |
| Inhouse Employer | North | In-House | SO | SSS | Marsiling |
| Inhouse Employer | North | Commercial | SO | SSO | Bukit Gombak |
