| 98 Cromwell Road Limited | Households | 2005 |
| 98 Cross Road Freeholders Limited | Households | 2009 |
| 99 Preston Drove Ltd | Construction | 2018 |
| 99% Proof Direct Marketing Limited | Financial services | 2005 |
| 9LIVES Bars Ltd | Hospitality | 2019 |
| 9MM Ltd | Information & communication | 2023 |
| A & a Surgical Limited | Health & social care | 2016 |
| A & a Training Ltd | Administrative & support | 2002 |
| A & a Travel (Sussex) Limited | Transport & logistics | 2002 |
| A & B Property Development and Investment Ltd | Real estate | 2019 |
| A & D Patel Limited | Wholesale & retail | 2023 |
| A & E Comedy Limited | Information & communication | 2013 |
| A & E Construction Services Sussex Ltd | Construction | 2024 |
| A & J Barbers Limited | Other services | 2015 |
| A & J Trading Sussex Ltd | Other services | 2009 |
| A & K Chick Ltd | Education | 2011 |
| A & M Paving Contractors Limited | Construction | 2004 |
| A & M Plumbing & Heating Contractors Limited | Construction | 2009 |
| A & R Associates Limited | Professional & scientific | 1984 |
| A & S Cooling Ltd | Construction | 2006 |
| A & S Properties Sussex Limited | Real estate | 2021 |
| A .M Appliances Limited | Manufacturing | 2011 |
| A 2 H Services Limited | Professional & scientific | 2007 |
| A and C Waste Management Ltd | Water & waste | 2025 |
| A and R Decor Services Ltd | Construction | 2019 |
| A Azizi Media Ltd | Professional & scientific | 2024 |
| A BIT of What YOU Like Ltd | Wholesale & retail | 2025 |
| A C & D a Tunesi Limited | Hospitality | 2009 |
| A C G Property Services Limited | Construction | 2001 |
| A C G Renovations Limited | Financial services | 2014 |
| A Constanti Cars Limited | Wholesale & retail | 2010 |
| A D Williams Uxbridge Ltd | Wholesale & retail | 2018 |
| A D Wright Ltd | Financial services | 2012 |
| A Deeper Shade of Blue Ltd | Health & social care | 2024 |
| A FAB Foods Limited | Hospitality | 2024 |
| A Fantastic Racket Limited | Professional & scientific | 2024 |
| A Fitzy Limited | Administrative & support | 2024 |
| A Harvey Legal Limited | Professional & scientific | 2025 |
| A Hayes Electrical Limited | Construction | 2015 |
| A Hulme Ltd | Real estate | 2026 |
| A J F Seymours Limited | Administrative & support | 2010 |
| A K N (Sussex) LLP | | 2008 |
| A Lovibond Family Limited | Financial services | 2024 |
| A M Homes (Sussex) Limited | Real estate | 2017 |
| A M Q Ltd | Professional & scientific | 1999 |
| A Mose Investments Limited | Financial services | 2017 |
| A New Mark Ltd | Professional & scientific | 2025 |
| A Newman Property Ltd | Real estate | 2023 |
| A Property Business Ltd | Real estate | 2025 |
| A Room With a View Ltd | Hospitality | 2011 |
| A S Ramsay Block Limited | Construction | 2020 |
| A S Ramsay Building Contractors Limited | Construction | 1996 |
| A S Ramsay Commercial Limited | Construction | 2020 |
| A S Ramsay Fire and Security Limited | Construction | 2020 |
| A S Ramsay Group Limited | Financial services | 2020 |
| A S Tractors Limited | Wholesale & retail | 2015 |
| A Shade Above Limited | Manufacturing | 2000 |
| A Stallabrass Ltd | Professional & scientific | 2020 |
| A Star Study Ltd | Education | 2018 |
| A Stay Estates Ltd | Households | 2026 |
| A T Williams Ltd | Professional & scientific | 2017 |
| A Taste of Sahara Limited | Hospitality | 2017 |
| A Taylor-Bird Ltd | Professional & scientific | 2023 |
| A Touch of Asia Ltd | Health & social care | 2019 |
| A W Research Services Ltd | Administrative & support | 2016 |
| A World of Hands | Health & social care | 2016 |
| A&B Ltd | Real estate | 2024 |
| A&D Construction and Paving Ltd | Construction | 2018 |
| A&H Hospitality Ltd | Hospitality | 2026 |
| A&J Carpentry and Construction Ltd | Construction | 2021 |
| A&J Constructions Sussex Ltd | Transport & logistics | 2011 |
| A&M Premier Limited | Transport & logistics | 2024 |
| A&M Sedra Ltd | Real estate | 2018 |
| A-Shu Limited | Wholesale & retail | 2012 |
| A. & F. Pilbeam Construction Limited | Construction | 2008 |
| A. Christou Limited | Health & social care | 2022 |
| A. D. Construction Limited | Construction | 1996 |
| A. D. Williams Coach Works Limited | Wholesale & retail | 1986 |
| A. Martin Garden Services Ltd | Administrative & support | 2004 |
| A. T. Nail Limited | Arts & recreation | 2003 |
| A.B. Management 2000 Limited | Real estate | 1999 |
| A.C Prestige Limited | Wholesale & retail | 2018 |
| A.Coombs Pet Centre Limited | Wholesale & retail | 1966 |
| A.H.A.G. Limited | Real estate | 2006 |
| A.J. Mcleay Ltd | Information & communication | 2012 |
| A.J.B. Flooring Limited | Construction | 2003 |
| A.J.S. Boyne and Co. Ltd | Information & communication | 2024 |
| A.K. Riley Limited | Extraterritorial | 2004 |
| A.M Group Construction Limited | Construction | 2024 |
| A.R Transport Ltd | Transport & logistics | 2025 |
| A.R.C Build Limited | Construction | 2026 |
| A.R.T. Investments (1964) Limited | Real estate | 2006 |
| A.R.T. Leisure Limited | Construction | 2006 |
| A.R.T. Residential Limited | Real estate | 2009 |
| A.R.T.(1996) Limited | Real estate | 2025 |
| A.S Anderson and SON Electrical Contractors Limited | Professional & scientific | 2013 |
| A.S Anderson and SON GAS Contractors Ltd | Construction | 2026 |
| A.S Anderson Ltd | Other services | 2015 |
| A.S. Boiler Building Services Ltd | Manufacturing | 2015 |
| A.S.K Emea Ltd | Administrative & support | 2020 |