| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| Soverus Pte Ltd | Island Wide | - | SSS | SSS | Yishun |
| Legion Protection Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Force-One Security | Central | Commercial | SO | SO | Hougang |
| Securus Pte Ltd | Island Wide | - | OE | SS | Punggol |
| Young Women's Christian Association of Singapore | Central | In-House | SO | SS | Aljunied |
| Inhouse Employer | North | In-House | SO | SS | Jalan Besar |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SSO | MacPherson |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| Elid Technology International Pte Ltd | North | Condominium | SO | SS | Yishun |
| Young Women's Christian Association of Singapore | Central | In-House | Security Mgt | SS | Sembawang |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SO | Choa Chu Kang |
| Certis Group | Central | School | SO | Nil | Jurong East |
| Peregrine Security Pte. Ltd. | Central | School | SO | SO | Bras Basah |
| Fervour Pte Ltd | Island Wide | - | OM | SSS | Lakeside |
| Inhouse Employer | West | Industrial / Factory | SO | SSO | Tuas Link |
| SMS Investigation & Security Pte Ltd | East | Condominium | SS | SS | Punggol |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | - |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | CSO | Bedok |
| Resorts World Sentosa | South | Commercial | SS | SS | Pasir Ris |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SSO | Simei |
| Securus Pte Ltd | Island Wide | - | OE | SO | - |
| FormTeam Consultancy Pte Ltd | West | Condominium | SSO | SSO | Woodlands |
| ProtectPlus Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
