| Titanium Safety & Security Pte Ltd | North | Dormitory | SO | SO | Hougang |
| Ranger Investigation & Security Services Pte Ltd | East | Industrial / Factory | SO | SO | Hougang |
| A+ Officers Security Pte Ltd | Island Wide | Construction | SO | SO | Hougang |
| Reachfield Security & Safety Management Pte Ltd | North | School | SO | SO | Hougang |
| Eagle I Security Services Pte Ltd | Central | Healthcare | SO | SO | Hougang |
| Hilton Garden Inn Singapore Serangoon | Central | In-House | SO | SO | Woodlands |
| Fervour Pte Ltd | Central | Data Centre | SO | SO | Hougang |
| Eagle I Security Services Pte Ltd | Central | Healthcare | SO | SO | Hougang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SO | Woodlands |
| Peregrine Security Pte. Ltd. | North | Industrial / Factory | SSO | SO | Woodlands |
| PICO Guards Pte Ltd | North | Industrial / Factory | SS | SO | Woodlands |
| Titanium Safety & Security Pte Ltd | West | Dormitory | SSO | SO | Woodlands |
| Acestes Pte Ltd | Central | - | Security Mgt | SO | Bedok |
| SATS Ltd | Island Wide | Commercial | APO | SO | Yishun |
| Triple ‘S’ Protection Pte Ltd | North | Shipyard / Port | SO | SO | Sembawang |
| TwinRock Global | North | Dormitory | SO | SO | Yishun |
| Metropolis Security Systems Pte Ltd | North | Condominium | SO | SO | Yishun |
| Singapore Security Force Pte Ltd | Central | Mix-Development | SSO | SO | Kaki Bukit |
| Elid Technology International Pte Ltd | West | Condominium | SO | SO | Choa Chu Kang |
| Metropolis Security Systems Pte Ltd | East | Gov Building | SO | SO | Kaki Bukit |
| Prosegur Singapore Pte Ltd | East | Industrial / Factory | SO | SO | Kaki Bukit |
| Crowne Plaza Changi Airport | East | Hotel | SO | SO | Sengkang |
| SMS Security | East | Condominium | SO | SO | Kaki Bukit |
| Inhouse Employer | South | Hotel | SO | SO | Woodlands |
| Metropolis Security Systems Pte Ltd | East | Gov Building | SO | SO | Kaki Bukit |
