| Bents Green Plumbing Limited | Construction | 2024 |
| Bents View Management Company Limited | Households | 2005 |
| Bentsfield Limited | Real estate | 2014 |
| Bentz-Amoru Limited | Hospitality | 2025 |
| Benvane Investments Limited | Health & social care | 2003 |
| Benvane Limited | Health & social care | 2004 |
| Benvenute Limited | Hospitality | 2018 |
| Benvenuto Caffee Ltd | Manufacturing | 2026 |
| Benzina Limited | Arts & recreation | 2011 |
| Ben’S Fire & Feast Limited | Hospitality | 2025 |
| Beonia E-Commerce Private Limited | Wholesale & retail | 2017 |
| BER 365 Ltd | Hospitality | 2025 |
| Berck Renovation Ltd | Construction | 2025 |
| Beresfordwillis Ltd | Hospitality | 2024 |
| Berg Detailing Rotherham Ltd | Administrative & support | 2024 |
| BERGAMOT12 Limited | Hospitality | 2025 |
| Berhe & Co. Limited | Information & communication | 2025 |
| Beritan Ltd | Wholesale & retail | 2018 |
| Berkeley Hurrell Limited | Professional & scientific | 2013 |
| Berkeley Latam Limited | Professional & scientific | 2014 |
| Berkeley Law Limited | Professional & scientific | 2009 |
| Berkeley Law Nominees Limited | Professional & scientific | 2014 |
| Berkeley Law Trust Company Limited | Professional & scientific | 2014 |
| Berkuk Technology Ltd | Wholesale & retail | 2024 |
| Berlin Calling Ltd | Hospitality | 2019 |
| Berlin Kebab SY Ltd | Hospitality | 2025 |
| Bernie's Small Plates Ltd | Hospitality | 2025 |
| Bernie’S Drinks Ltd | Hospitality | 2025 |
| Berresford Office Services Limited | Real estate | 2002 |
| Berriesfield Limited | Information & communication | 2020 |
| Berry & Hotson Limited | Professional & scientific | 1986 |
| Berry & Hotson LLP | | 2006 |
| Berry Commercial Finance Ltd | Other services | 2017 |
| Berry Hill Properties Limited | Real estate | 2011 |
| Berry Niche Ltd | Wholesale & retail | 2020 |
| Berry's Trees and Gardens Ltd | Agriculture & fishing | 2017 |
| Bertans Ltd | Administrative & support | 2016 |
| Bertie Gertie's Limited | Wholesale & retail | 2018 |
| Bertis Properties Ltd | Real estate | 2022 |
| Bertram & Illingworth Limited | Real estate | 1965 |
| Bertram Construction Ltd | Administrative & support | 2017 |
| Berts Trading Limited | Wholesale & retail | 2025 |
| Berwari Pizza Limited | Hospitality | 2024 |
| Berwyn Group Limited | Financial services | 2024 |
| Besa Ventures Ltd | Other services | 2026 |
| Besi Cafe Limited | Hospitality | 2018 |
| Besi Care Ltd | Health & social care | 2022 |
| Besi Group Ltd | Construction | 2023 |
| Besi Properties Ltd | Real estate | 2023 |
| Bespin Ltd | Information & communication | 2019 |
| Bespoke Assets Ltd | Real estate | 2025 |
| Bespoke Bathrooms Plumbing & Tiling Limited | Construction | 2015 |
| Bespoke Blinds & Poles Limited | Wholesale & retail | 2007 |
| Bespoke Brow Academy Limited | Other services | 2019 |
| Bespoke Ceilings and Interiors Ltd | Construction | 2007 |
| Bespoke Comp Chem Ltd. | Professional & scientific | 2011 |
| Bespoke Image Creations Limited | Other services | 2010 |
| Bespoke Information, Advice & Solutions Limited | Information & communication | 2020 |
| Bespoke Installers Limited | Extraterritorial | 2014 |
| Bespoke Joinery Solutions Limited | Construction | 2010 |
| Bespoke Quality Joinery Limited | Construction | 2023 |
| Bespoke Render Company (UK) Ltd | Construction | 2019 |
| Bespoke Trikes Ltd | Manufacturing | 2018 |
| Bespoke Vehicle Leasing Ltd | Administrative & support | 2022 |
| Bespoke Vehicles Ltd | Wholesale & retail | 2024 |
| Bespoken Limited | Education | 2023 |
| Bessema House Ltd | Real estate | 2018 |
| Best Bites Ltd | Wholesale & retail | 2025 |
| Best BOY Bagel Limited | Hospitality | 2023 |
| Best Cars 1 Ltd | Wholesale & retail | 2019 |
| Best Choice Properties Ltd | Real estate | 2025 |
| Best Face Forward Ltd | Other services | 2015 |
| Best Grill & Peri Peri Chicken Limited | Hospitality | 2022 |
| Best Housing Property Limited | Households | 2025 |
| Best Made Designs Limited | Construction | 2022 |
| Best Meat (UK) Limited | Wholesale & retail | 2008 |
| Best Multi Cuisine Takeaway Ltd | Hospitality | 2023 |
| Best Point Building Service Ltd | Construction | 2025 |
| Best Price Trading Ltd | Wholesale & retail | 2025 |
| Best Solicitors Limited | Professional & scientific | 2021 |
| Best Tests Ltd | Education | 2024 |
| Best Tissue Limited | Wholesale & retail | 2025 |
| Best Western Dance Academy | Other services | 2001 |
| Bestall & Co Landscape Design Ltd | Administrative & support | 2010 |
| Bestall Accountancy Ltd | Professional & scientific | 2010 |
| Bestall Solutions Ltd | Construction | 2012 |
| Bestby Limited | Real estate | 2024 |
| Bestelite Hardfacing Limited | Extraterritorial | 2008 |
| Bestfit Auto Care Limited | Wholesale & retail | 2020 |
| Bestfit Tyre Centre Ltd | Wholesale & retail | 1991 |
| Bestguest Limited | Administrative & support | 2016 |
| Bestsellers Direct Limited | Wholesale & retail | 1998 |
| Bestsign Ltd | Hospitality | 2024 |
| BET LMS Limited | Arts & recreation | 2025 |
| BET ST George Ltd | Arts & recreation | 2025 |
| Beta Climbing Designs Limited | Manufacturing | 2002 |
| Beta Design Office Ltd | Information & communication | 2020 |
| Beta LAB Ltd | Financial services | 2022 |
| Beta Technology Limited | Professional & scientific | 1984 |
| Betadean Limited | Wholesale & retail | 2021 |