| Beamco Ltd | Wholesale & retail | 2026 |
| Beaming Mind Ltd | Health & social care | 2017 |
| Beatbrunch Ltd | Information & communication | 2025 |
| Beaumont Food & Wine Ltd | Wholesale & retail | 2025 |
| Beaute World Ltd | Wholesale & retail | 2020 |
| Beautiful World Training Academy Ltd | Education | 2016 |
| Beauts Aesthetics Academy Ltd | Education | 2025 |
| Beauty 11 Ltd | Other services | 2025 |
| Beauty Beautique Limited | Wholesale & retail | 2025 |
| Beauty by NAB Ltd | Other services | 2021 |
| Beauty by Nicky Limited | Other services | 2015 |
| Beauty Hub Palace Ltd | Other services | 2025 |
| Beauty Xpression Ltd | Wholesale & retail | 2024 |
| Beauty Zone Palace Ltd | Other services | 2020 |
| Beautyfit Ltd | Other services | 2021 |
| Beautyfitness Ltd | Health & social care | 2021 |
| Beauvais (International) Limited | Transport & logistics | 2012 |
| Beavers Farm Estate Management Limited | Real estate | 2012 |
| Become Entertainment Ltd | Information & communication | 2023 |
| Bedda Express Ltd | Transport & logistics | 2025 |
| Bee's PCO Rentals Ltd | Administrative & support | 2019 |
| Beerpol Ltd | Wholesale & retail | 2018 |
| Bees Bathrooms Ltd | Construction | 2023 |
| Beirut CUT Ltd | Other services | 2020 |
| Beit Beirut Ltd | Hospitality | 2018 |
| BEL Amour Salon & Supplies Ltd | Other services | 2026 |
| Bela Cleaning Services Ltd | Administrative & support | 2025 |
| Belibou Transport Ltd | Transport & logistics | 2020 |
| Bell Cafe Ltd | Hospitality | 2026 |
| Bell Corner Limited | Wholesale & retail | 2011 |
| Bell Food & Wines Ltd | Wholesale & retail | 2018 |
| Bella Decoration Ltd | Construction | 2024 |
| Bella Letting Ltd | Real estate | 2015 |
| Bella's Pinoy Oriental Limited | Wholesale & retail | 2021 |
| Bellaa Limited | Hospitality | 2020 |
| Bellaholic Beauty Treatments Ltd | Other services | 2019 |
| Bellavesto Limited | Wholesale & retail | 2025 |
| Bellaviva Academy of Beauty & Aesthetics Limited | Education | 2020 |
| Bellaviva Ltd | Other services | 2010 |
| Belle View Properties Limited | Real estate | 2013 |
| Bellview Court Limited | Real estate | 2006 |
| Belmondo UK Ltd | Wholesale & retail | 2021 |
| Belong Earth Ltd | Wholesale & retail | 2024 |
| Benchmark Expert Reports Ltd | Information & communication | 2022 |
| Benedicto Crasto Ltd | Professional & scientific | 2024 |
| Benevolee Ltd | Health & social care | 2026 |
| Bennavin Limited | Construction | 2025 |
| Bentry Capital Developments Ltd | Construction | 2024 |
| Bentry Capital Investments (AG) Ltd | Construction | 2025 |
| Bentry Capital Investments Co (CT) Ltd | Construction | 2024 |
| Bentry Capital Irwell Gardens Investment Co Limited | Construction | 2025 |
| Bentry Capital Irwell Gardens Limited | Construction | 2025 |
| Bentry Capital Limited | Construction | 2022 |
| Bentry Charlotte Terrace Capital Limited | Construction | 2024 |
| Bentry NO1 Hampstead Investment Co Ltd | Financial services | 2025 |
| Bentry NO1 Hampstead Ltd | Construction | 2025 |
| Bentry Security Trustee Ltd | Financial services | 2024 |
| Bentry Woking Limited | Construction | 2023 |
| Beresford Boundary Ltd | Real estate | 2018 |
| Beresford Construction Limited | Construction | 1996 |
| Beresford Estates Limited | Real estate | 2017 |
| Beresford Gardens Residents Association Limited | Real estate | 1964 |
| Beresford North Limited | Hospitality | 2014 |
| Berkeley BR Ltd | Other services | 2020 |
| Berkeley M.O.T. Service Limited | Wholesale & retail | 1997 |
| Berkshire Law Chamber Limited | Professional & scientific | 2011 |
| Bernardus Holdings Limited | Financial services | 2026 |
| Berries Limited | Wholesale & retail | 2023 |
| Berry Browne Limited | Wholesale & retail | 2025 |
| Berry Group Holdco Limited | Financial services | 2020 |
| Berry Transport Ltd | Transport & logistics | 2019 |
| Berwick Trans Services Ltd | Transport & logistics | 2025 |
| Bespoke Black Limited | Administrative & support | 2016 |
| Bespoke Interior Design Limited | Manufacturing | 2023 |
| Bessete Ltd | Manufacturing | 2024 |
| Best Barbers Ltd | Other services | 2015 |
| Best Cctv Ltd | Wholesale & retail | 2026 |
| Best Choice Food & Wine Ltd | Wholesale & retail | 2022 |
| Best Choice Travels Limited | Administrative & support | 2015 |
| Best Corporate Holdings Ltd | Real estate | 2025 |
| Best Daughters Ltd | Wholesale & retail | 2020 |
| Best FIX Group Ltd | Construction | 2020 |
| Best Food & Wine Reading Limited | Wholesale & retail | 2017 |
| Best Food & Wine Store Ltd | Wholesale & retail | 2019 |
| Best Food Supermarket Ltd. | Wholesale & retail | 2004 |
| Best London Concrete Supplier Ltd | Manufacturing | 2026 |
| Best Management Trading Ltd | Construction | 2019 |
| Best Plumbing Limited | Construction | 2022 |
| Best Shop Corner Limited | Wholesale & retail | 2025 |
| Best&Fast Body Work Limited | Wholesale & retail | 2020 |
| BEST2INSURE Ltd | Extraterritorial | 2009 |
| Bestamov Specialist Ltd | Health & social care | 2020 |
| Bestzon UK Ltd | Construction | 2012 |
| Better Pantry Ltd | Wholesale & retail | 2025 |
| Beverage Bear Ltd | Wholesale & retail | 2023 |
| Beverage Ville Ltd | Wholesale & retail | 2023 |
| Bey'Bi Transport Logistic Limited | Transport & logistics | 2026 |
| Beyond Border Solutions Limited | Professional & scientific | 2025 |
| Beyond Childhood CIC | Health & social care | 2021 |
| Beyond Just Service Ltd | Information & communication | 2023 |