| A.G.W. Electronics Limited | Manufacturing | 1974 |
| Actuit Limited | Financial services | 2016 |
| Agricultural Audio Ltd | Arts & recreation | 2023 |
| Behind Every Boss Ltd | Administrative & support | 2015 |
| Beresford Consultants Limited | Financial services | 1990 |
| Bevingdean Limited | Real estate | 2014 |
| CAR1508 Ltd | Transport & logistics | 2022 |
| County Gate Properties (Brighton) Limited | Real estate | 1992 |
| County Gate Properties (Handcross) Limited | Real estate | 1993 |
| County Gate Properties (Surrey) Limited | Real estate | 2003 |
| County Gate Properties (Tongdean Lane) Limited | Real estate | 2016 |
| County Gate Properties Holdings Limited | Real estate | 2003 |
| County Gate Properties Limited | Real estate | 1989 |
| COW Design Limited | Professional & scientific | 2024 |
| Etal (UK) Limited | Wholesale & retail | 2008 |
| Gbvi Holdings Limited | Financial services | 2023 |
| Giant Events Limited | Administrative & support | 2001 |
| Giant Exhibitions Limited | Administrative & support | 2001 |
| Isabel Skincare Limited | Wholesale & retail | 2025 |
| Kings Controls LLP | | 2022 |
| Kitchen Originals Limited | Public administration | 2025 |
| London Production House Ltd | Extraterritorial | 2012 |
| MTS Sussex Limited | Education | 2025 |
| Oakmill Services Ltd | Agriculture & fishing | 2021 |
| Pruden & Smith Limited | Manufacturing | 2002 |
| Schoolplan Travel Limited | Administrative & support | 1997 |
| Siga (Electronics) Limited | Manufacturing | 1961 |
| Siga Limited | Administrative & support | 1997 |
| Standen's of Ditchling Limited | Administrative & support | 1964 |
| THE Elms Residents Association Limited | Households | 2000 |
| THE Entomologist Ltd | Professional & scientific | 2021 |
| THE Nutmeg Tree Ditchling Ltd | Hospitality | 2023 |
| THE Pearl Portfolio Limited | Professional & scientific | 2024 |
| Tops Travel Limited | Administrative & support | 1997 |
| Verjuice Limited | Manufacturing | 2015 |
| Westmeston Estate LLP | | 2009 |