| Beontvuk Ltd | Professional & scientific | 2020 |
| Beorma Transport Ltd | Transport & logistics | 2025 |
| Beornred Management Company Limited | Households | 1982 |
| Bepilates Limited | Arts & recreation | 2024 |
| Bepo Ltd | Construction | 2023 |
| Bepo Swiss Limited | Administrative & support | 2010 |
| Beqis Limited | Wholesale & retail | 2025 |
| Berben Building Services Limited | Construction | 2017 |
| Bercott Haven Ltd | Real estate | 2025 |
| Berengrave Gardens Residents Management Company Limited | Households | 2019 |
| Beresford Consulting Group Limited | Administrative & support | 2025 |
| Beresford Enterprises Limited | Administrative & support | 2026 |
| Bergado Ltd | Information & communication | 2014 |
| Bergel Bidco Limited | Financial services | 2019 |
| Bergel Midco Limited | Financial services | 2020 |
| Bericote Croft Limited | Households | 2006 |
| Berihyt Limited | Other services | 2012 |
| Bering Productions Limited | Information & communication | 2026 |
| Berkeley Auto Centre Ltd | Wholesale & retail | 2015 |
| Berkeley Capital Assets PLC | Extraterritorial | 2021 |
| Berkeley Court (Phase 2) Limited | Households | 2000 |
| Berkeley ROW Portfolio Ltd | Professional & scientific | 2023 |
| Berkeley Windows Limited | Construction | 2022 |
| Berkhal (UK) Holdings Ltd | Real estate | 2024 |
| Berki Consultancy Limited | Other services | 2017 |
| Berkley Housing Ltd | Real estate | 2023 |
| Berkley Property Management Limited | Real estate | 2025 |
| Berkley Strategy Ltd | Professional & scientific | 2025 |
| Berkor Ltd | Administrative & support | 2025 |
| Berkshire Beauty Limited | Other services | 2017 |
| Berkshire Estates Limited | Real estate | 2001 |
| Berkshire General Surgeons Limited | Health & social care | 2003 |
| Berlins (UK) Limited | Professional & scientific | 2014 |
| Berlins Associates Ltd | Professional & scientific | 2022 |
| Berlins First Limited | Professional & scientific | 2022 |
| Berlins Limited | Professional & scientific | 2008 |
| Berlins Solutions Ltd | Professional & scientific | 2022 |
| Bermuda Park (Nuneaton) Management Company Limited | Households | 2004 |
| Bermuda Subs Ltd | Administrative & support | 2014 |
| Bernadette Wilde Limited | Professional & scientific | 2002 |
| Bernafon (UK) Limited | Extraterritorial | 1989 |
| Bernard James Ltd | Transport & logistics | 2024 |
| Bernard Matthews Foods (Derby) Limited | Manufacturing | 2019 |
| Bernard Matthews Foods (Sunderland) Limited | Manufacturing | 2015 |
| Bernard Matthews Foods Limited | Manufacturing | 2016 |
| Bernard Matthews Frozen Limited | Manufacturing | 2016 |
| Bernardine Limited | Wholesale & retail | 2022 |
| Bernardino Inter LP | | 2015 |
| Bernice EYE Care Limited | Health & social care | 2014 |
| Bero Brewing - UK Ltd | Manufacturing | 2025 |
| Beroa Care Limited | Health & social care | 2020 |
| Beroa Limited | Health & social care | 2019 |
| Beronbrim Limited | Other services | 1987 |
| Berrington & SON Contracts Limited | Construction | 2010 |
| Berrow Bar Ltd | Hospitality | 2025 |
| Berrow Court Hotel Ltd | Hospitality | 2025 |
| Berrow Court Ltd | Hospitality | 2021 |
| Berrow Mansion Limited | Hospitality | 2025 |
| Berry & Bailey Ltd | Professional & scientific | 2023 |
| Berry Coffee Ltd | Hospitality | 2026 |
| Berry Fresh Produce Ltd | Wholesale & retail | 2019 |
| Berry N Bean Ltd | Hospitality | 2025 |
| Berry Staffing Services Limited | Administrative & support | 2017 |
| Berrys (Holdings) Technologies Limited | Professional & scientific | 2006 |
| Berrys Global Innovations Limited | Manufacturing | 2011 |
| Berrys Technologies Limited | Manufacturing | 1966 |
| Bert and Gerts Ltd | Professional & scientific | 2012 |
| Bert Dalton & SON Limited | Wholesale & retail | 1949 |
| Bert Dalton Holdings Limited | Real estate | 2015 |
| Bertisa Ltd | Manufacturing | 2024 |
| Bertoni Construction Ltd | Construction | 2017 |
| Bertsgrove Limited | Health & social care | 2024 |
| Bertz Associates Ltd | Information & communication | 2020 |
| Bert’S Bike Parts Ltd | Wholesale & retail | 2026 |
| Bery Grange Portfolio Ltd | Extraterritorial | 2021 |
| Beryl's World of Flowers Limited | Wholesale & retail | 1981 |
| Beryllium Training and Consultancy Ltd | Professional & scientific | 2025 |
| BES Birmingham Limited | Hospitality | 2024 |
| BES Catering Ltd | Hospitality | 2023 |
| BES Legal Limited | Professional & scientific | 2018 |
| BES Street Food Ltd | Hospitality | 2023 |
| Besa Coffee Ltd | Hospitality | 2025 |
| Besal Construction Ltd | Construction | 2018 |
| Bescot Pharma Ltd | Wholesale & retail | 2026 |
| Besoke .Shop Limited | Wholesale & retail | 2024 |
| Bespoco Innovations Limited | Manufacturing | 2022 |
| Bespoke Accommodation Limited | Real estate | 2019 |
| Bespoke Aluminium Systems Limited | Manufacturing | 2026 |
| Bespoke Ballast Services Ltd | Water & waste | 2023 |
| Bespoke Bean Ltd | Wholesale & retail | 2023 |
| Bespoke Car Care Ltd | Wholesale & retail | 2025 |
| Bespoke Carpentry Services Ltd | Manufacturing | 2017 |
| Bespoke Caterers Limited | Hospitality | 2022 |
| Bespoke Commercial Finance Limited | Financial services | 2018 |
| Bespoke Detailing and Sales Limited | Wholesale & retail | 2026 |
| Bespoke Direct Care Ltd | Health & social care | 2021 |
| Bespoke Doors Ltd | Wholesale & retail | 2024 |
| Bespoke Facilities Management (Holdings) Ltd | Financial services | 2024 |
| Bespoke Facilities Management Ltd | Administrative & support | 2015 |
| Bespoke INK 2.0 Ltd | Other services | 2025 |