| B&E Global Properties Ltd. | Hospitality | 2017 |
| B&P Appeals Ltd | Professional & scientific | 2026 |
| B&P Mentoring Ltd | Education | 2024 |
| B&P Sviluppo Ltd | Real estate | 2020 |
| B&P X JM Developments Ltd | Real estate | 2026 |
| B. U. Industrial Components Limited | Manufacturing | 1976 |
| B.E Chairs Limited | Other services | 2022 |
| B.H.W. Ceramics Limited | Manufacturing | 1973 |
| B22 Driving Ltd | Transport & logistics | 2019 |
| B2B Rentals Limited | Other services | 2012 |
| BA Coaching Ltd | Health & social care | 2024 |
| Baakd Ltd | Wholesale & retail | 2021 |
| Baani Bains Ltd | Hospitality | 2025 |
| Babington Technical & Professional Services Limited | Professional & scientific | 2018 |
| Babstar Ltd | Real estate | 2023 |
| Bacchus Wine Merchants Ltd | Wholesale & retail | 2021 |
| Bach Timber Frame Ltd | Construction | 2024 |
| Bachra Enterprises Limited | Real estate | 2020 |
| Back Berry Bars Ltd | Hospitality | 2023 |
| BAD Boys Burger Ltd | Hospitality | 2025 |
| Badhan Factory Limited | Administrative & support | 1997 |
| Badhan Properties Limited | Construction | 2009 |
| Badhan Sales Limited | Wholesale & retail | 2020 |
| Badnell Heating Services Limited | Construction | 2004 |
| Bagri & Co Ltd | Professional & scientific | 1997 |
| BAI Lang Kickboxing Limited | Arts & recreation | 2022 |
| Bailey Asset Limited | Wholesale & retail | 2023 |
| Baileys Utilities and Training Ltd | Energy | 2024 |
| Baillie Limited | Professional & scientific | 2003 |
| Baked Bean Bakery Limited | Hospitality | 2026 |
| Baker & Bellfield Limited | Manufacturing | 1993 |
| Bakers Patterns Limited | Manufacturing | 2001 |
| Balagim Ltd | Other services | 2019 |
| Balanceability Limited | Wholesale & retail | 2007 |
| Balation Ltd | Other services | 2019 |
| Balkan Romanian Grill Limited | Hospitality | 2026 |
| Ball Sports Ltd | Professional & scientific | 2008 |
| Ballissimo Pizza Limited | Hospitality | 2026 |
| Balloon Investors Ltd | Real estate | 2024 |
| Ballpoint Complex Ltd | Wholesale & retail | 2025 |
| Balls UP! Leisure Ltd | Hospitality | 2023 |
| Baltic Bidco Limited | Financial services | 2022 |
| Baltic Holdco Limited | Financial services | 2022 |
| Baltic Midco Limited | Financial services | 2022 |
| Baltic Topco Limited | Extraterritorial | 2022 |
| Bamboo Telford Ltd | Hospitality | 2025 |
| Banabay Limited | Wholesale & retail | 2012 |
| Bananaa Ltd | Wholesale & retail | 2023 |
| Banants Ltd | Other services | 2019 |
| Banbel Ltd | Administrative & support | 2019 |
| Bangla Pride (Telford) Limited | Hospitality | 2015 |
| Banks & Cooper Ltd | Wholesale & retail | 2011 |
| Bantama Market Limited | Professional & scientific | 2021 |
| BAO Property Ltd | Real estate | 2018 |
| Barbers 2021 Limited | Real estate | 2021 |
| Barden Fabrication & Installation Ltd | Professional & scientific | 2024 |
| Barfield Enterprises Ltd | Financial services | 2023 |
| Bargain Jungle Limited | Wholesale & retail | 2024 |
| Barkat Production Limited | Information & communication | 2022 |
| Barker Support Services Limited | Financial services | 2001 |
| Barkhamj Limited | Health & social care | 2022 |
| Barley MOW (Midlands) Limited | Hospitality | 2025 |
| Barratt Workwear & Graphics Ltd | Manufacturing | 2021 |
| Barrclay Solutions Limited | Administrative & support | 2006 |
| Barreda Ltd | Other services | 2019 |
| Barrett Garage Doors Ltd | Construction | 2020 |
| Barrow Village Preschool Ltd | Education | 2016 |
| Bars & Pubs Limited | Hospitality | 2018 |
| Bartell Machinery Limited | Manufacturing | 1998 |
| Basil Investment Ltd | Public administration | 2023 |
| Batas Group Limited | Construction | 2020 |
| Bathroom Fitters (UK) Ltd | Construction | 2010 |
| Baton Training Ltd | Education | 2026 |
| Battery Examination Services & Training Limited | Manufacturing | 2016 |
| Bauhaus Crafts Ltd | Manufacturing | 2019 |
| Bauromat (UK) Ltd | Manufacturing | 1997 |
| Bauromat Holdings Limited | Financial services | 2015 |
| Bavaza Ltd | Other services | 2020 |
| Bayleys MOT Centre Ltd | Wholesale & retail | 2022 |
| Bayleys Vehicle Locksmiths Ltd | Wholesale & retail | 2018 |
| BB Commercial Vehicle & Tail Lift Repairs Limited | Wholesale & retail | 2014 |
| BBF Engagement Ltd | Education | 2022 |
| BBQ Smokers Limited | Hospitality | 2026 |
| BC Commercial Property SPV Ltd | Real estate | 2026 |
| BC Electrical & Home Ltd | Manufacturing | 2022 |
| BC Property SPV Ltd | Real estate | 2024 |
| Bcal Global Holdings Ltd | Administrative & support | 2023 |
| Bcrm Ltd | Households | 2026 |
| BCT Trading Limited | Hospitality | 2019 |
| BCU Clinical Service Ltd | Health & social care | 2026 |
| BD Property Investments Ltd | Real estate | 2020 |
| Bdesha Investment Properties Ltd | Real estate | 2021 |
| BDW Developments Limited | Construction | 2010 |
| BE Happy Support Limited | Health & social care | 2020 |
| BE My Guest Events Ltd | Administrative & support | 2024 |
| BE Personal Gifts Ltd | Wholesale & retail | 2018 |
| Beanprint Ltd | Professional & scientific | 2013 |
| Bear Asset Management Limited | Households | 2023 |
| Bear PIT Promotions and Events Ltd | Arts & recreation | 2023 |
| Bearcroft Capital Ltd | Agriculture & fishing | 2020 |