| Security Masters Pte Ltd | North | Commercial | CSO | SSS | Bishan |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SSS | Dover |
| RAS Security Pte Ltd | North | Commercial | OE | SS | Bukit Batok |
| Force-One Security | North | Data Centre | OE | SSO | Simei |
| Force-One Security | North | Data Centre | SO | SSO | Marsiling |
| Force-One Security | North | Data Centre | OE | SSO | Simei |
| Force-One Security | North | Data Centre | OE | SO | - |
| Triple ‘S’ Protection Pte Ltd | North | Depot | SSO | SSO | Choa Chu Kang |
| Inhouse Employer | North | Industrial / Factory | SSO | SO | Ang Mo Kio |
| First Security & Private Investigation (Singapore) Pte Ltd | North | Condominium | SO | SSO | Woodlands |
| Inhouse Employer | North | Industrial / Factory | SSO | SO | Sembawang |
| Inhouse Employer | North | Industrial / Factory | SSO | SSO | Yishun |
| Inhouse Employer | North | Industrial / Factory | SSO | SSO | Marsiling |
| Reachfield Security & Safety Management Pte Ltd | North | School | SSS | SSS | Lakeside |
| Inhouse Employer | North | Industrial / Factory | SSO | CSO | Bukit Panjang |
| First Security & Private Investigation (Singapore) Pte Ltd | North | Industrial / Factory | SO | SO | Hougang |
| Force-One Security | North | Data Centre | OE | SSO | Sengkang |
| Force-One Security | North | Data Centre | OE | CSO | Ang Mo Kio |
| Guthrie FMC Security Pte Ltd | North | Dormitory | SO | SSO | Yishun |
| Inhouse Employer | North | Industrial / Factory | SSO | SSO | Yishun |
| Inhouse Employer | North | Industrial / Factory | SSO | SSO | Yishun |
| Force-One Security | North | Data Centre | SS | CSO | Ang Mo Kio |
| Inhouse Employer | North | Industrial / Factory | SSO | CSO | Marsiling |
| Certis Group | North | Commercial | SO | SO | - |
| Fervour Pte Ltd | North | Data Centre | SO | SO | - |
