| SATS Ltd | East | - | OE | CSO | Marsiling |
| Trek Investigations & Security Management Services Pte Ltd | Central | Condominium | SO | SSO | Pasir Ris |
| Inhouse Employer | West | In-House | OM | CSO | Toa Payoh |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SSS | Tampines West |
| Reachfield Security & Safety Management Pte Ltd | West | Industrial / Factory | SS | SS | Lakeside |
| Fervour Pte Ltd | Island Wide | - | OM | SO | Tampines East |
| Star Security Services | Island Wide | - | Security Mgt | SSS | Choa Chu Kang |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | SS | Woodlands |
| PICO Guards Pte Ltd | Island Wide | - | OE | SO | - |
| Security & Risk Solutions Pte. Ltd. | East | Office Building | SS | SS | Hougang |
| Inhouse Employer | Central | Mix-Development | Security Mgt | SSS | Sengkang |
| Resorts World Sentosa | South | Commercial | SS | SSS | Woodlands |
| Soverus Pte Ltd | Island Wide | - | SSS | SSS | Yishun |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | CSO | Toa Payoh |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SO | SO | Tuas Link |
| York Hotel (Private) Limited | Central | In-House | OM | SO | Yishun |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | CSO | Toa Payoh |
| Aspectus Consultancy Pte Ltd | North | Industrial / Factory | SO | SSS | Yishun |
| SATS Ltd | Island Wide | - | OM | Nil | Commonwealth |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines |
| Star Security Services | Island Wide | - | OE | SS | Woodlands |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SS | Choa Chu Kang |
| PICO Guards Pte Ltd | Island Wide | - | OM | SO | Sengkang |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SO | Bukit Batok |
| Crowne Plaza Changi Airport | East | In-House | OM | CSO | Toa Payoh |
