| Benard Property Holdings Ltd | Real estate | 2026 |
| Benavar IT Consulting Limited | Information & communication | 2016 |
| Benchmark Consultancy Services Ltd | Professional & scientific | 2004 |
| Bencolink Ltd | Health & social care | 2019 |
| Bend of Power Ltd | Construction | 2026 |
| Bendava Ltd | Wholesale & retail | 2026 |
| Benedict Hairdressing Ltd | Other services | 2018 |
| Bengal Blue Spice Limited | Hospitality | 2013 |
| Bengal Foods (UK) Ltd | Wholesale & retail | 2011 |
| Bengal Paradise Southampton Ltd | Hospitality | 2026 |
| Bengal Properties Management Ltd | Real estate | 2019 |
| Bengal Wholesale Ltd | Wholesale & retail | 2026 |
| Bengals Online Ltd | Wholesale & retail | 2025 |
| Benharvs Care Group Limited | Administrative & support | 2022 |
| Benhill Limited | Hospitality | 2019 |
| Benish Rafiq Ltd | Administrative & support | 2017 |
| Beniton Investments Limited | Real estate | 2017 |
| Benjamin's Cafe Ltd | Hospitality | 2021 |
| Benjamin's Cafe Luton Ltd | Hospitality | 2021 |
| Benkell Limited | Construction | 2007 |
| Bennetts Gate Bakery Limited | Wholesale & retail | 2002 |
| Benny's Tyres & Exhaust Ltd | Wholesale & retail | 1997 |
| Bennys Investment Ltd | Financial services | 2023 |
| Bentley & Co Properties Ltd | Real estate | 2018 |
| Benz Equestrian Ltd | Agriculture & fishing | 2020 |
| Berachah Investments Ltd | Real estate | 2020 |
| Bergamo Properties Ltd | Real estate | 2017 |
| Bergamo Solutions Ltd | Information & communication | 2014 |
| Berkeley & Aston Ltd | Wholesale & retail | 2019 |
| Berkeley Lowndes Limited | Transport & logistics | 2022 |
| Berkeley Nominees Limited | Professional & scientific | 1967 |
| Berkeley Royce Cherry Ltd | Real estate | 2023 |
| Berkeley Royce Moore 1 Ltd | Real estate | 2023 |
| Berkeley Royce Moore 2 Ltd | Real estate | 2023 |
| Berkeley Royce Moore 3 Ltd | Real estate | 2023 |
| Berkeley Royce Moore 9 Ltd | Real estate | 2024 |
| Berkeley Royce Moult Ltd | Real estate | 2024 |
| Berkeley Royce REG Ltd | Real estate | 2024 |
| Berkeley Square Financial Services Limited | Financial services | 2017 |
| Berkley Property Limited | Real estate | 2019 |
| Berko PSI Ltd | Construction | 2020 |
| Berlin Enterprise Ltd | Administrative & support | 2018 |
| Berlin Middle East Auto Spare Parts Limited | Manufacturing | 2025 |
| Berlin Pizza Ltd | Hospitality | 2020 |
| Bernard Davies Limited | Wholesale & retail | 2011 |
| Bernardin Limited | Other services | 2025 |
| Bernat Kitchens Ltd | Construction | 2016 |
| Bernat Properties Ltd | Real estate | 2023 |
| Bernie Limited | Health & social care | 2012 |
| Bernie's FIX and Trim Ltd | Other services | 2025 |
| Berry Lettings Ltd | Real estate | 2019 |
| Berryblossom Ltd | Real estate | 2025 |
| Berrygate Consulting Ltd | Administrative & support | 2016 |
| Berrygate Interactive Limited | Extraterritorial | 2015 |
| Berrygate Properties Ltd | Real estate | 2020 |
| Berrygate Property Management Ltd | Real estate | 2020 |
| Berylod Limited | Wholesale & retail | 2025 |
| Besaltn Limited | Construction | 2024 |
| Besan Training Ltd | Transport & logistics | 2015 |
| Bespoke Bites Desserts Ltd | Wholesale & retail | 2026 |
| Bespoke Driveways & Patios SW Ltd | Administrative & support | 2023 |
| Bespoke Fitting Services Limited | Construction | 2012 |
| Bespoke LG Limited | Wholesale & retail | 2025 |
| Bespoke Lifestyle Group Ltd | Other services | 2017 |
| Bespoke Marketing.Ai Ltd | Wholesale & retail | 2025 |
| Bespoke Medical Services Ltd | Health & social care | 2018 |
| Bespoke Patios & Drives Ltd | Administrative & support | 2025 |
| Bessimara Limited | Financial services | 2022 |
| Bessoft Limited | Information & communication | 2023 |
| Best Accounting Ltd | Professional & scientific | 2019 |
| Best Bargains Direct Limited | Wholesale & retail | 2019 |
| Best Buildings Construction Ltd | Construction | 2025 |
| Best Built Construction Ltd | Construction | 2026 |
| Best Business Centre Ltd | Transport & logistics | 2013 |
| Best Buy Convenience Store Limited | Wholesale & retail | 2016 |
| Best Buys First Limited | Wholesale & retail | 2016 |
| Best Carwash Luton Ltd | Other services | 2023 |
| Best Choice Luton Ltd | Wholesale & retail | 2025 |
| Best Curier Ltd | Transport & logistics | 2022 |
| Best Ebuyer Limited | Wholesale & retail | 2012 |
| Best Kebab and Peri Peri Ltd | Hospitality | 2026 |
| Best Kebabs (Flitwick) Limited | Hospitality | 2013 |
| Best Luton Ltd | Wholesale & retail | 2024 |
| Best More Ltd | Health & social care | 2020 |
| Best One (Dunstable) Limited | Wholesale & retail | 2008 |
| Best People Ltd | Administrative & support | 2019 |
| Best Practice Physio Ltd | Health & social care | 2010 |
| Best Systems Solutions Ltd | Other services | 2018 |
| Best Top Roofing Ltd | Construction | 2026 |
| Best Tyrez Ltd | Wholesale & retail | 2024 |
| Best Utility Groundworks Ltd | Construction | 2021 |
| Bestandery Limited | Agriculture & fishing | 2019 |
| Bestcon Ltd | Construction | 2010 |
| Bestfinish Design Ltd | Construction | 2026 |
| Bestlife BN Co Ltd | Manufacturing | 2025 |
| Bestquote Group Limited | Financial services | 2018 |
| Bestway Contract Cleaning & Support Services Limited | Other services | 1999 |
| Beta Henlow Ltd | Hospitality | 2015 |
| Beta Media Rigging Ltd | Construction | 2018 |
| BETA4 Construction Ltd | Construction | 2020 |