| Aysan Limited | Hospitality | 2025 |
| Azcro Holdings Ltd | Real estate | 2026 |
| Azcro House Construction an Development Ltd | Other services | 2021 |
| Azcro Motors Ltd | Wholesale & retail | 2025 |
| Azcrow Holdings Ltd | Real estate | 2026 |
| Aztek Construction South East Ltd | Construction | 2024 |
| Aztek Consultancy South East Ltd | Administrative & support | 2024 |
| Aztek Property Group Ltd | Real estate | 2021 |
| B & B Developments Limited | Real estate | 2007 |
| B & I Property Management Limited | Real estate | 2026 |
| B G Utilities Limited | Energy | 2022 |
| B Howard Event Services Ltd | Hospitality | 2019 |
| B J Translations Limited | Professional & scientific | 2005 |
| B Nunn Consulting Ltd | Construction | 2026 |
| B P Drains Ltd | Construction | 2011 |
| B&T Importing Limited | Wholesale & retail | 2024 |
| B'S Blooms Ltd | Administrative & support | 2023 |
| B. & S. Fire Protection Limited | Public administration | 2000 |
| B2B Digital Media Limited | Administrative & support | 2014 |
| B4U Construction Kent Ltd | Construction | 2026 |
| B4U Construction Ltd | Construction | 2019 |
| Babiker Ltd | Professional & scientific | 2024 |
| Backup Typing Limited | Administrative & support | 2009 |
| Bailum Ltd | Financial services | 2025 |
| Baker Smith Holdings Ltd | Financial services | 2020 |
| Baldwin & Haines Ltd | Hospitality | 2026 |
| Balmoral Mansions Ltd | Real estate | 2025 |
| Bangbizbuys Limited | Wholesale & retail | 2014 |
| Bar 152 Limited | Hospitality | 2016 |
| Barney and the Pizza Ltd | Hospitality | 2019 |
| Barney Howard & Co Limited | Financial services | 2023 |
| Barnsole Vineyard Limited | Agriculture & fishing | 2014 |
| Baron UK Holdings Limited | Real estate | 2023 |
| Barretts Accountancy Ltd | Professional & scientific | 2025 |
| Barrett’S Bookkeeping Ltd | Professional & scientific | 2024 |
| Basement Plan Ltd | Professional & scientific | 2023 |
| Bashford Limited | Information & communication | 2011 |
| Bastion Point Ltd | Real estate | 2022 |
| Battleofthebeers Ltd | Hospitality | 2023 |
| Bay Tree Broadstairs Investments Limited | Other services | 2021 |
| Bay Tree Broadstairs Limited | Hospitality | 1999 |
| Bayview Bar Ltd | Hospitality | 2022 |
| Bayview Manor Management Co. Ltd | Households | 2010 |
| BB Financial Solutions Ltd | Financial services | 2008 |
| BB Pasta & Pizza Ltd | Hospitality | 2021 |
| BE Better Sustainability Limited | Professional & scientific | 2024 |
| Be&Be Ltd | Hospitality | 2025 |
| Beach Flats Margate Limited | Real estate | 2017 |
| Beach Haven Management Limited | Households | 2018 |
| Beach House Birchington Limited | Health & social care | 2013 |
| Beach Retreat Limited | Households | 2015 |
| Beach the Variety Store Ltd | Wholesale & retail | 2018 |
| Beachbody Academy Ltd | Arts & recreation | 2019 |
| Bealeo Electrical Services Ltd | Construction | 2018 |
| Beam Cleaning Thanet Limited | Administrative & support | 2024 |
| Beano Cafe Ramsgate Ltd | Hospitality | 2023 |
| BEC Construction Limited | Construction | 2003 |
| Beck Maintenance Limited | Professional & scientific | 2015 |
| Beckies Bakery Limited | Wholesale & retail | 2026 |
| BEE ZEE Accountancy Ltd | Professional & scientific | 2023 |
| Beechlawns Caravan Park Limited | Hospitality | 2026 |
| Beechwood Properties (Southern) Limited | Administrative & support | 2012 |
| Beer Central Festival Limited | Hospitality | 2018 |
| Befu Living Limited | Real estate | 2025 |
| Beginner D. J. Lessons Ltd | Education | 2018 |
| Bell & Beerling Pubs Ltd | Hospitality | 2018 |
| Belle and Bay Salon Ltd | Other services | 2023 |
| Bellows Group Ltd | Manufacturing | 2026 |
| Bellpepper Industries Ltd | Arts & recreation | 2018 |
| Belmont Accommodation Ltd | Administrative & support | 2017 |
| Belsize Landscapes Limited | Administrative & support | 2025 |
| BEN Samworth Development Limited | Information & communication | 2018 |
| Benjy Media Ltd | Information & communication | 2014 |
| Benjysmotorcycle&Mobile Ltd | Wholesale & retail | 2021 |
| Benjytreads Limited | Wholesale & retail | 2004 |
| Benjytyres&Service Ltd | Wholesale & retail | 2020 |
| Benko Developments Limited | Construction | 2016 |
| Bennycrime Limited | Administrative & support | 2010 |
| Bentleys Construction Limited | Wholesale & retail | 2005 |
| Berry Langer Sheppard Stembridge Ltd | Households | 2022 |
| Bert Ventures Limited | Wholesale & retail | 2024 |
| Besmart Digital Solutions Ltd | Professional & scientific | 2026 |
| Bespoke Building Projects Kent Ltd | Construction | 2020 |
| Bespoke Glazing Solutions Kent Ltd | Construction | 2018 |
| Best Foods Kent Limited | Hospitality | 2025 |
| Betacor Limited | Information & communication | 2018 |
| Beth-El Industries (UK) Ltd | Manufacturing | 2016 |
| Bethanysbuffets Limited | Hospitality | 2022 |
| Betterness Manifesto Ltd | Administrative & support | 2023 |
| Beyond Energy Networks Ltd | Professional & scientific | 2023 |
| Beysucenter Ltd | Wholesale & retail | 2026 |
| Bezemu Ltd | Wholesale & retail | 2024 |
| Bgflanagan Ltd | Construction | 2019 |
| Big Jelly Buildings Limited | Financial services | 2016 |
| Big Jelly Studios Ltd | Information & communication | 2013 |
| Bigsby Consultancy Limited | Real estate | 2004 |
| Billy Young Productions Limited | Information & communication | 2026 |
| Birch Court (Birchington) Limited | Households | 1992 |
| Birch Hill Court (North) Limited | Households | 1989 |
| Birch Hill Court (South) Limited | Households | 1989 |