| Beauty League Limited | Other services | 2020 |
| Beauty Nails 2026 Ltd | Wholesale & retail | 2026 |
| Beauty Shop Limited | Wholesale & retail | 2010 |
| Beauty Spot Saloon Ltd | Other services | 2025 |
| Beauty Trixx Ltd | Other services | 2018 |
| Beauty With LOU Ltd | Other services | 2023 |
| Beautybyd Studio Limited | Other services | 2025 |
| Beautyfix Training Academy Ltd | Other services | 2021 |
| Beautyloungebymo Ltd | Wholesale & retail | 2025 |
| Beauté Naturelle (Tropical Blend) Limited | Households | 2021 |
| Beaver Homes Limited | Construction | 2014 |
| Bebambooty Ltd | Wholesale & retail | 2026 |
| Bebbington Brick Services Ltd | Construction | 2003 |
| Bebe Cosmetics Limited | Wholesale & retail | 2019 |
| Bebida Beverage Solutions Limited | Hospitality | 1977 |
| BEC Property Consultants Ltd | Real estate | 2021 |
| Becerra Cortes Investment Partners Ltd | Financial services | 2025 |
| Beck & Co Barbers Ltd | Other services | 2024 |
| Beck Conroy Consulting Limited | Hospitality | 2000 |
| Beck Financial Planning Ltd | Real estate | 2019 |
| Beck Partnership LLP | | 2012 |
| Beck Property and Developments Ltd | Real estate | 2024 |
| Beckett Local Minimarket Limited | Wholesale & retail | 2022 |
| Beckwith Grove Ltd | Real estate | 2026 |
| Becoc Limited | Professional & scientific | 2019 |
| Becoh Developments Ltd | Real estate | 2020 |
| BED and Breakfast Limited | Hospitality | 2007 |
| Beda Business Limited | Other services | 2025 |
| Beda Properties Limited | Households | 2025 |
| Bedfield Property Ltd | Real estate | 2025 |
| Bedi Group of Business Ltd | Wholesale & retail | 2025 |
| Bedlow Hunter Ltd | Real estate | 2024 |
| Beds for Everyone (Sheffield) Limited | Wholesale & retail | 1999 |
| Beds Showroom Ltd | Manufacturing | 2025 |
| Bedshowroom Ltd | Wholesale & retail | 2019 |
| Beduhi Limited | Hospitality | 2025 |
| BEE & DEE Builders Limited | Construction | 2003 |
| BEE Birks Ltd | Real estate | 2023 |
| BEE Electrical Services Ltd | Construction | 2019 |
| BEE Flying Ltd | Professional & scientific | 2017 |
| BEE Green Energies Limited | Construction | 2025 |
| BEE Inspired Ltd | Wholesale & retail | 2024 |
| BEE Pharmaceuticals UK Limited | Wholesale & retail | 2022 |
| BEE Sweet Bakery Ltd | Manufacturing | 2018 |
| BEE Winter Ltd | Information & communication | 2025 |
| Bee&Bee Company Ltd | Wholesale & retail | 2020 |
| Bee&Property Ltd | Real estate | 2024 |
| Beech Accounting Services Limited | Professional & scientific | 2016 |
| Beech Hill Nursery School Limited | Health & social care | 2004 |
| Beech Hill Properties Limited | Real estate | 2023 |
| Beech House Property Investments Limited | Extraterritorial | 2013 |
| Beech Housing Limited | Real estate | 2012 |
| Beech Lettings Ltd | Real estate | 2024 |
| Beech NUT Property Ltd | Real estate | 2023 |
| Beechwood Court RTM Company Ltd | Households | 2025 |
| Beecroft Ventures Ltd | Real estate | 2025 |
| Beeecoming Ltd | Information & communication | 2026 |
| Beehive Food Ltd | Hospitality | 2016 |
| Beehouse Consultancy Ltd | Professional & scientific | 2026 |
| Beehouse Investments Ltd | Real estate | 2022 |
| Beek Advertising Ltd | Professional & scientific | 2025 |
| Beekay Digital Limited | Information & communication | 2026 |
| Beeley Fabrications Limited | Manufacturing | 1976 |
| Beeline Installation & Maintenance Limited | Manufacturing | 1997 |
| Beemac Ltd | Other services | 2019 |
| Been Conned? Limited | Administrative & support | 2014 |
| Beer Central Ltd | Wholesale & retail | 2024 |
| Beer Dog Ltd | Wholesale & retail | 2021 |
| Beer Scaffolding Ltd | Construction | 2024 |
| Beesknees Holidays Limited | Hospitality | 2025 |
| Beesknees Properties Limited | Construction | 2025 |
| Beetroot Productions Ltd | Arts & recreation | 2026 |
| Beetwo Limited | Professional & scientific | 2025 |
| Beewise Travel Ltd | Transport & logistics | 2016 |
| BEG Friend Limited | Arts & recreation | 2026 |
| Begley Ltd | Hospitality | 2025 |
| Begum Properties Ltd | Real estate | 2025 |
| Beharie Property Enterprise Limited | Extraterritorial | 2008 |
| Behaviour Smart Ltd | Education | 2020 |
| Behind the Scenes TV Ltd | Information & communication | 2021 |
| Behnam Specialist Cars Ltd | Wholesale & retail | 2024 |
| Behnam Spice Ltd | Hospitality | 2024 |
| Behold Accounting Ltd | Extraterritorial | 2024 |
| Bei-Fortune Trading Limited | Wholesale & retail | 2025 |
| Beiditu Limited | Wholesale & retail | 2025 |
| Beighton Block Paving Limited | Administrative & support | 2022 |
| Beighton Branch Works Limited | Manufacturing | 2023 |
| Beighton Community Partnership | Administrative & support | 1997 |
| Beighton Interiors Ltd | Construction | 2025 |
| Beighton Villages Development Trust | Administrative & support | 2002 |
| Beighton WOK Ltd | Hospitality | 2024 |
| Beijing Dance Academy Alumni Organisation of the UK C.I.C. | Arts & recreation | 2024 |
| Beijing House 269 Limited | Hospitality | 2022 |
| Beijing Rigour Culture and Media (UK) Ltd | Information & communication | 2020 |
| Being Well Group Limited | Health & social care | 2017 |
| BEK Properties Limited | Real estate | 2026 |
| BEL Environment Ltd | Wholesale & retail | 2025 |
| Belani Ltd | Wholesale & retail | 2025 |
| Beleza Holdings Limited | Construction | 2021 |
| Belfast Urology Limited | Health & social care | 2023 |