| Inhouse Employer | North | Industrial / Factory | SSO | SO | Ang Mo Kio |
| Certis Group | Island Wide | - | SSO | SSO | Marsiling |
| Inhouse Employer | North | Industrial / Factory | SSO | SO | Sembawang |
| Inhouse Employer | North | Industrial / Factory | SSO | SSO | Yishun |
| Inhouse Employer | North | Industrial / Factory | SSO | SSO | Marsiling |
| Inhouse Employer | North | Industrial / Factory | SSO | CSO | Bukit Panjang |
| Triple ‘S’ Protection Pte Ltd | Central | Depot | SSO | SO | Hougang |
| Tiger Hong Security Services & Consultants Pte Ltd | West | Condominium | SSO | SO | Tuas Link |
| Inhouse Employer | North | Industrial / Factory | SSO | SSO | Yishun |
| Prosegur Singapore Pte Ltd | East | Industrial / Factory | SSO | SO | Sengkang |
| GoMobile Security Solutions Pte Ltd | West | Industrial / Factory | SSO | SO | Choa Chu Kang |
| Inhouse Employer | North | Industrial / Factory | SSO | SSO | Yishun |
| Kingston Property Maintenance Services Pte Ltd | Central | Condominium | SSO | SSO | - |
| Unique Security Services Pte Ltd | Central | Condominium | SSO | SS | Toa Payoh |
| Premier Security Co-operative Ltd | Central | Healthcare | SSO | SS | Toa Payoh |
| Chang & Chang Security Management Pte. Ltd. | Central | Condominium | SSO | SS | Toa Payoh |
| Focus Security Services Pte Ltd | West | Industrial / Factory | SSO | SSO | Jurong East |
| Securitas Guarding Services (Singapore) Pte Ltd | West | Data Centre | SSO | CSO | Boon Lay |
| Inhouse Employer | North | Industrial / Factory | SSO | CSO | Marsiling |
| Soverus Pte Ltd | Central | Data Centre | SSS | SSS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSS | CSO | Clementi |
| Dragnet Smartech Security Pte Ltd | South | Mix-Development | SSS | CSO | Sembawang |
| Security & Risk Solutions Pte. Ltd. | South | Office Building | SSS | SSS | Jurong East |
| Security & Risk Solutions Pte. Ltd. | South | Office Building | SSS | SSS | Jurong East |
| Oneberry Technologies Pte Ltd | East | School | SSS | SSS | Marsiling |
