| SATS Ltd | Island Wide | Commercial | SO | SO | Hougang |
| Jasa Investigation & Security Services Pte Ltd | East | Industrial / Factory | SO | SO | Hougang |
| Ranger Investigation & Security Services Pte Ltd | East | Industrial / Factory | SO | SO | Hougang |
| Regal Security & Fire Management Services Pte Ltd | Central | Commercial | SO | SO | Hougang |
| Horus I (Private Limited) | Central | Retail | SO | SO | Tai Seng |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | SO | SO | Tai Seng |
| SPH Retail Property Management Services Pte Ltd | Central | In-House | SO | SS | Khatib |
| Inhouse Employer | Central | In-House | SO | SS | Khatib |
| Royal Security Management Services Pte Ltd | East | Commercial | SO | SS | Toa Payoh |
| Inhouse Employer | North | Commercial | SO | SO | Choa Chu Kang |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Tampines East |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Tampines East |
| AETOS Holdings Pte Ltd | West | - | SO | SS | Buangkok |
| Security Enforcer Pte Ltd | Central | Hotel | SO | SO | Hougang |
| 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 |
| SATS Ltd | Island Wide | Commercial | SO | SS | Woodlands |
| Inhouse Employer | Central | In-House | SO | SS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | North | Shipyard / Port | SO | SO | Sembawang |
