| 01034726 Limited | Professional & scientific | 1971 |
| 0I0 Consulting Ltd | Information & communication | 2025 |
| 1 & 2 Bell Lane Management Limited | Administrative & support | 2009 |
| 1-4 Rowans (Freehold) Limited | Households | 2020 |
| 101010 Limited | Financial services | 2014 |
| 106 Tachbrook Street Limited | Real estate | 2016 |
| 114 Reigate Road Limited | Hospitality | 2003 |
| 12 & 12A Paget Avenue RTM Company Ltd | Households | 2017 |
| 14 & 16 Highdown Road Ltd. | Households | 1989 |
| 14 South Road Newhaven Limited | Households | 2002 |
| 161 & 163 Bear Road (Brighton) Limited | Real estate | 2015 |
| 166 NKR Limited | Households | 2002 |
| 16A Butler Avenue Harrow Limited | Construction | 2025 |
| 170A-170B High ST RTM Company Ltd | Households | 2025 |
| 18 Almington Street Limited | Real estate | 2011 |
| 18 Highcroft Villas (Brighton) Limited | Extraterritorial | 2004 |
| 1859 Limited | Financial services | 2017 |
| 192.COM Ltd | Information & communication | 2021 |
| 193-198 Elmhurst Mansions Management Company Limited | Households | 1994 |
| 195 High Street Management Company Limited | Households | 2006 |
| 20 Old Shoreham Road (Freehold) Limited | Households | 2018 |
| 2000 BC Publishing Ltd | Administrative & support | 2012 |
| 210 to 216 Portland Road Limited | Real estate | 2012 |
| 23 High Street (Lewes) Limited | Households | 2025 |
| 28 Western Road Lewes Limited | Households | 2013 |
| 2ND Summit Limited | Professional & scientific | 2024 |
| 3 Jays Car Sales Limited | Wholesale & retail | 2021 |
| 3 Pelham (Sussex Freehold) Limited | Real estate | 2024 |
| 308 Car Storage Limited | Transport & logistics | 2018 |
| 33 Degrees Latitude Limited | Professional & scientific | 2001 |
| 34 Cambridge Road Hove Limited | Households | 2013 |
| 34 Clarendon Road (Hove) RTM Company Limited | Households | 2010 |
| 34-36 Cliffe High Street Freehold Company Limited | Households | 2022 |
| 35 Kenwyn Road Limited | Real estate | 1998 |
| 35 the Esplanade Ltd. | Households | 1998 |
| 39 to 49 Parkgate Road SW11 Limited | Households | 2013 |
| 4 Tisbury Road Management Company Limited | Real estate | 1995 |
| 41-60 Albert Palace Mansions (Freehold) Limited | Households | 2008 |
| 45 Egremont Place (Management) Limited | Households | 2002 |
| 47 Portland Management Limited | Households | 2019 |
| 48 Upperton Road Limited | Households | 2025 |
| 4AM Digital Ltd | Information & communication | 2018 |
| 5 Star Roofing & Building Sussex Limited | Construction | 2025 |
| 50 Pictures Ltd | Information & communication | 2013 |
| 51 South Terrace (Freehold) Limited | Households | 2026 |
| 63 Granville Park Limited | Real estate | 2002 |
| 69 Brighton Road Ltd | Households | 2021 |
| 7 & 8 Clapham Park Terrace Freehold Ltd | Real estate | 2021 |
| 7-8 Howard Terrace Brighton Management Company Limited | Households | 2023 |
| 72 Seventytwo Ltd | Professional & scientific | 2025 |
| 77 High Street DD Ltd | Households | 2023 |
| 8081SSHIGHST RTM Company Ltd | Real estate | 2022 |
| 9 Palmeira Avenue Limited | Households | 1997 |
| 97 Savernake Road Limited | Households | 2002 |
| A & P Estates Hove Limited | Households | 2024 |
| A & P Hove Development Limited | Real estate | 2024 |
| A F Metal Fabrication Limited | Manufacturing | 2012 |
| A Jupp & SON Limited | Manufacturing | 2004 |
| A T Leadworks Limited | Construction | 2017 |
| A-Z Taxis Lewes Ltd | Transport & logistics | 2020 |
| A. S. C. C. (UK) Limited | Education | 2014 |
| A.F.M Limited | Transport & logistics | 1997 |
| A.R.M. Property and Management Ltd | Real estate | 2026 |
| AAP Chemicals Limited | Financial services | 2014 |
| AB Automotive Mobile Mechanic Ltd | Wholesale & retail | 2021 |
| Ab,C Copywriter Limited | Professional & scientific | 2013 |
| Abacus Partnership Limited | Professional & scientific | 2024 |
| ABC Training Trust | Arts & recreation | 2008 |
| Above and Beyond Touring Limited | Arts & recreation | 2022 |
| Abstraxuk Ltd | Wholesale & retail | 2025 |
| Abvet Consultancy Limited | Professional & scientific | 2011 |
| Abyss Brewing Ltd | Manufacturing | 2016 |
| Accordia Care Limited | Health & social care | 2019 |
| Accordia Group Limited | Health & social care | 2018 |
| Accordia Supported Living Service Lincolnshire Limited | Health & social care | 2024 |
| Accordia Supported Living Services Limited | Health & social care | 2018 |
| Ackery Consulting Limited | Hospitality | 2003 |
| ACT ADR Limited | Construction | 2020 |
| Actuate Coaching Limited | Professional & scientific | 2022 |
| Adam Gray Legal Services Limited | Professional & scientific | 2019 |
| Adam Walker Limited | Professional & scientific | 2019 |
| Adams & Remers LLP | | 2010 |
| Adams & Remers Secretarial Services Limited | Administrative & support | 2009 |
| Addyman Family Investment Company Limited | Real estate | 2015 |
| Ades Lake Conservation Company Limited | Households | 2005 |
| Adlitil Limited | Real estate | 1959 |
| Adrm Consulting Ltd | Professional & scientific | 2024 |
| Advyse Limited | Professional & scientific | 2022 |
| AE Buddy Marketing Services Ltd | Professional & scientific | 2025 |
| Aefrs Ltd | Public administration | 2017 |
| Aerial Ecology Ltd | Professional & scientific | 2025 |
| Afina Ltd | Administrative & support | 2022 |
| Afom Limited | Real estate | 2024 |
| Afom Quality Care Limited | Health & social care | 2025 |
| Afri-Co-Lab CIC | Manufacturing | 2020 |
| After Nyne Consulting Ltd | Professional & scientific | 2016 |
| After Nyne Contemporary Limited | Wholesale & retail | 2020 |
| After Nyne Creative Services Group Ltd | Financial services | 2016 |
| Agars (Pearls) Limited | Other services | 2011 |
| Agathon Advisory Ltd | Professional & scientific | 2023 |