| 01 Films Ltd | Information & communication | 2009 |
| 10 Tables Limited | Manufacturing | 2018 |
| 10 Wellington Crescent Management Co. Limited | Households | 2002 |
| 103 Western Road Limited | Households | 2003 |
| 109 Bayford Road Limited | Real estate | 2026 |
| 110 Boulevard RTM Company Ltd | Households | 2016 |
| 110 Panjatani Ltd | Hospitality | 2026 |
| 1122 Whitehouse Invest Limited | Real estate | 2017 |
| 117 Bayford Road Limited | Real estate | 2026 |
| 123 Bayford Road Limited | Real estate | 2026 |
| 139 Sydney Road Management Company Limited | Households | 1988 |
| 14 Holdings Limited | Real estate | 2025 |
| 14 ST Catherines Road Limited | Real estate | 2026 |
| 147 Brighton Road Coulsdon Ltd | Real estate | 2006 |
| 17-32 Elgin Mansions RTM Company Limited | Households | 2004 |
| 19 Easter Park Limited | Real estate | 2023 |
| 19 Maxwell Road Limited | Real estate | 2026 |
| 196 QTR Ltd | Households | 2020 |
| 1LS Ventures Limited | Real estate | 2020 |
| 2 Pevensey Road Limited | Extraterritorial | 2016 |
| 2-6 Wilds Rents Limited | Households | 2019 |
| 20 Bigwood Avenue RTM Company Limited | Households | 2024 |
| 20 Montpelier Road Freehold Limited | Real estate | 2026 |
| 20-22 Lewes Crescent Limited | Households | 1982 |
| 2070PARTNERS Ltd | Professional & scientific | 2018 |
| 21 Prinsep Road Management Ltd | Households | 2024 |
| 23 Church Walk RTM Company Limited | Households | 2013 |
| 24/80 Limited | Information & communication | 2007 |
| 25 Albert Road (Brighton) Limited | Households | 2006 |
| 25 Cobham Street Management Limited | Real estate | 2018 |
| 27 Appledore Gardens Freehold Limited | Households | 2013 |
| 2DC Holdings Ltd | Real estate | 2025 |
| 3 Estelle Road Management Limited | Real estate | 1997 |
| 3 F International Limited | Health & social care | 1995 |
| 31105 Ltd | Administrative & support | 2025 |
| 33KV Ltd | Extraterritorial | 2020 |
| 35 Pier Road Limited | Real estate | 2026 |
| 359 Catering Ltd | Hospitality | 2025 |
| 36 Appledore Gardens Management Company Limited | Households | 2008 |
| 360 Corporation Ltd | Wholesale & retail | 2025 |
| 360X365 Limited | Information & communication | 2013 |
| 3D Morphosis Ltd | Professional & scientific | 2007 |
| 4 Browns Close Ltd | Construction | 2022 |
| 40/42 Appledore Management Company Limited | Hospitality | 2006 |
| 41-43 Kents Road Limited | Real estate | 2007 |
| 42IP Ltd | Professional & scientific | 2020 |
| 46 Lower Market Street Limited | Real estate | 2000 |
| 48 South Terrace Limited | Real estate | 2026 |
| 4FRONT Car Sales Limited | Wholesale & retail | 2002 |
| 4JRIN Limited | Wholesale & retail | 2005 |
| 5 Cavendish Place (Brighton) Limited | Real estate | 2000 |
| 50 First Avenue (Hove) Limited | Real estate | 2000 |
| 6 C'S Approach Ltd | Health & social care | 2023 |
| 64 Denbigh Street Limited | Real estate | 2005 |
| 65/67 Bassingham Road Limited | Real estate | 2011 |
| 7 Cobham Terrace Management Limited | Real estate | 2021 |
| 7 Western Place Limited | Real estate | 2026 |
| 79 Station Road (Redhill) Management Company Limited | Real estate | 2002 |
| 85 Sackville Road Limited | Real estate | 2002 |
| 94 Lyndhurst Way Management Limited | Households | 2002 |
| 97 Cambridge Street Management Limited | Other services | 1990 |
| 99 Concepts Limited | Professional & scientific | 2012 |
| 9TH Street Digital Ltd | Real estate | 2025 |
| A & F Documentation Limited | Professional & scientific | 2011 |
| A & M Electrical Services Sussex Limited | Construction | 2018 |
| A and J Stephenson Property Ltd | Real estate | 2024 |
| A G Pusey Associates | Other services | 2012 |
| A J Gardens & Grounds Care Ltd | Administrative & support | 2024 |
| A New View Cleaners Ltd | Construction | 2020 |
| A Nice Drop Limited | Information & communication | 2022 |
| A P Installations Limited | Other services | 2006 |
| A Pusey Osteopaths Ltd | Health & social care | 2024 |
| A Wealth of Difference LLP | | 2024 |
| A. Ridley Plumbing & Heating Ltd | Construction | 2012 |
| A.S.D.R. Limited | Administrative & support | 2007 |
| A.S.K Plumbing and Heating Limited | Manufacturing | 2010 |
| A1 Car Search Limited | Wholesale & retail | 2013 |
| AB Site Investigation Ltd | Construction | 2022 |
| AB Taylor Retail Ltd | Wholesale & retail | 2024 |
| ABC Brokerage Ltd | Wholesale & retail | 2019 |
| ABC GAS Limited | Construction | 2025 |
| ABK Building Consultancy Ltd | Professional & scientific | 2010 |
| Above and Beyond Home Cleaning Ltd | Administrative & support | 2026 |
| Above Board Ltd | Wholesale & retail | 2025 |
| Absolute Protection Limited | Wholesale & retail | 2003 |
| Abstractt Ltd | Construction | 2020 |
| ABW Carpentry Ltd | Manufacturing | 2022 |
| AC Mortgage Services Limited | Professional & scientific | 2018 |
| AC Performance Cars Ltd | Wholesale & retail | 2026 |
| Accelerated Business Consulting Limited | Professional & scientific | 2013 |
| Accomplish Education Limited | Education | 2016 |
| Accomplish Properties Limited | Real estate | 2019 |
| Accounts Agreed Limited | Professional & scientific | 2016 |
| Accredo Group Limited | Financial services | 2020 |
| Accredo Secured Business Finance Limited | Financial services | 2014 |
| Accuramatic Limited | Manufacturing | 2019 |
| Acorn Career Consulting Limited | Education | 2021 |
| Acosta Dance Centre Limited | Arts & recreation | 2021 |
| Acosta Dance Foundation Ltd | Arts & recreation | 2011 |
| ACS Aircon Limited | Construction | 2004 |