| Assistance & Coaching Comptabilite & Administration Ltd | Financial services | 2017 |
| Assuredly Tech Consultancy Ltd | Information & communication | 2023 |
| Aston Spencer Company Ltd | Wholesale & retail | 2022 |
| Astrophe Enterprises LLC | | 2021 |
| Aswar Tours Limited | Administrative & support | 2025 |
| AT Cliffe Developments Limited | Real estate | 2017 |
| AT Your Service London Ltd | Construction | 2013 |
| Athena Solar and Electrical Solutions Limited | Construction | 2025 |
| Athletic Hawks Ltd | Administrative & support | 2025 |
| Atis (U.K) Private Ltd | Wholesale & retail | 2019 |
| Atlantic Investments, Inc. | | 2022 |
| Aucta AI Ltd | Information & communication | 2026 |
| Authority Builders, LLC | | 2022 |
| Auto Door Services Kent Limited | Construction | 2022 |
| Automation Academy Ltd | Education | 2019 |
| Automatize Ltd | Information & communication | 2011 |
| Aventur Trading Limited | Professional & scientific | 2018 |
| AW Fire Doors Limited | Construction | 2025 |
| AWM Power Ltd | Manufacturing | 2022 |
| AWS Administration Services Limited | Administrative & support | 2025 |
| Axisone Advisory Limited | Professional & scientific | 2026 |
| AXT Group Ltd | Administrative & support | 2020 |
| AY Business Law Limited | Professional & scientific | 2012 |
| Aycliffe Food and Wine Ltd | Wholesale & retail | 2022 |
| Ayda Construction Ltd | Construction | 2026 |
| Aylesham Auto's Limited | Wholesale & retail | 2018 |
| Aylward Dental Ltd | Health & social care | 2025 |
| AZ Customs Services Ltd | Transport & logistics | 2021 |
| Azymuth MAX Limited | Information & communication | 2006 |
| B & H Brickwork Limited | Construction | 2012 |
| B & R Stores Ltd | Wholesale & retail | 2021 |
| B & Sons Trading Limited | Wholesale & retail | 2021 |
| B Lane Commercial Works Limited | Construction | 2023 |
| B Sharp Pianos Limited | Other services | 1999 |
| B&H Fireplaces Limited | Construction | 2024 |
| B. Lane Groundwork and Landscaping Contractors Ltd | Construction | 2021 |
| B.S. Land and Engineering Surveys Limited | Professional & scientific | 2014 |
| B.S. Russell (Commercials) Limited | Wholesale & retail | 1992 |
| B1XKE Limited | Construction | 2019 |
| BA 2088 Ltd | Professional & scientific | 2025 |
| Babalaa Media Limited | Information & communication | 2013 |
| Babylon Dover Limited | Other services | 2020 |
| Bakerblake Ltd | Other services | 2023 |
| Balanced and Blissed Limited | Health & social care | 2013 |
| Baldwin Petrophysical Ltd | Professional & scientific | 2015 |
| Baldwin Salter Ltd | Construction | 2019 |
| Baldwin Salter Property Ltd | Construction | 2026 |
| Barbara Schonhofer Consulting Ltd | Professional & scientific | 2019 |
| Barnabas Holdings Ltd | Transport & logistics | 2017 |
| Barness Storage Limited | Transport & logistics | 2022 |
| Batchelor Building and Extensions Limited | Construction | 2025 |
| Batchelor Building Ltd | Construction | 2022 |
| Bates Retail Ltd | Wholesale & retail | 2026 |
| Battlebuddies Ltd | Wholesale & retail | 2025 |
| BAU Firms Limited | Hospitality | 2011 |
| Bay Reach Limited | Information & communication | 2021 |
| Bayclean LP | | 2020 |
| Bayliss Executive Travel (Daybreaks & Holidays) Ltd | Administrative & support | 2015 |
| Bayliss Executive Travel Limited | Transport & logistics | 2004 |
| Bayliss Properties (Deal) Limited | Extraterritorial | 2011 |
| BB Decorating Ltd | Construction | 2022 |
| BB Utilities Limited | Construction | 2022 |
| Beacon & Brand Ltd | Information & communication | 2025 |
| Beano Cafe Dover Ltd | Hospitality | 2022 |
| Beautybycarly Ltd | Other services | 2025 |
| Bee's Hand Car Wash Ltd | Administrative & support | 2026 |
| Befr Consult Ltd | Extraterritorial | 2024 |
| Belgian Woodworks Invest Ltd | Extraterritorial | 2017 |
| Belgian Woodworks Ltd | Extraterritorial | 2017 |
| Belle GC Trading Ltd | Wholesale & retail | 2025 |
| Benarth Hall LLC | | 2023 |
| Benedict Preece Limited | Arts & recreation | 2019 |
| Benjamin Hart Design Ltd | Professional & scientific | 2023 |
| Berelia Limited | Education | 2012 |
| Bergen Limited | Wholesale & retail | 2008 |
| Beruku Advisory Limited | Information & communication | 2021 |
| Beruku Identity Limited | Information & communication | 2019 |
| Beruku Knowledge Limited | Information & communication | 2020 |
| Besbox Ltd | Information & communication | 2019 |
| Bespoke Manufacturing (South East) Limited | Administrative & support | 2015 |
| Better Call SOL Ltd | Wholesale & retail | 2022 |
| Beulah Villas Limited | Households | 2010 |
| Beverage Belgium Ltd | Extraterritorial | 2024 |
| Beverage Invest Belgium Ltd | Extraterritorial | 2024 |
| Beyond Illusion Craft Ltd | Information & communication | 2024 |
| Beyond the Borders Tours Ltd | Administrative & support | 2025 |
| Beziers Commercial Ltd | Professional & scientific | 2021 |
| Big Transport Kent Ltd | Transport & logistics | 2024 |
| Biggin Newsin Ltd | Wholesale & retail | 2024 |
| Biggin Street General Store Ltd | Wholesale & retail | 2024 |
| Bigk-Uk Ltd | Wholesale & retail | 2025 |
| Bignet Limited | Financial services | 2020 |
| Birchington Trade Car Sales Ltd | Wholesale & retail | 2025 |
| BIZ Stock Ltd | Wholesale & retail | 2021 |
| Bizness Investments PLC | Extraterritorial | 2011 |
| Black & White Financial Planning Ltd | Financial services | 2012 |
| Black Cat Housing (North East) Ltd | Real estate | 2022 |
| Black Pearl Offshore Limited | Professional & scientific | 2010 |
| Black Rose Automotive Ltd | Professional & scientific | 2026 |
| Blasketts Ltd | Wholesale & retail | 2022 |