| Balco Ltd | Other services | 2017 |
| Balereeve Properties Limited | Hospitality | 2014 |
| Balik Trading Limited | Hospitality | 2023 |
| Ball Brother Properties Ltd | Real estate | 2021 |
| Balloonscapes Ltd | Arts & recreation | 2023 |
| Bamboo Development Limited | Information & communication | 2023 |
| Bamboo Staging Ltd. | Construction | 2022 |
| Banrif Limited | Real estate | 2005 |
| Bantou Limited | Wholesale & retail | 2025 |
| BAP Project Management Limited | Professional & scientific | 2001 |
| Bar 29 2025 Ltd | Hospitality | 2025 |
| Bar Fish Rugby Ltd | Wholesale & retail | 2025 |
| Barakiel Ltd | Transport & logistics | 2021 |
| Barby Moorings Ltd | Arts & recreation | 2008 |
| Barby Nurseries Ltd | Wholesale & retail | 2021 |
| Barby Vehicle Solutions Ltd | Wholesale & retail | 2026 |
| Bark & Brush Dog Grooming Ltd | Other services | 2025 |
| Barkat ALI 1896 Limited | Real estate | 2021 |
| Barley MOW Newbold Limited | Hospitality | 2014 |
| Barnyard Trade Cars Limited | Wholesale & retail | 2012 |
| Barrow & Smith Ltd | Wholesale & retail | 2023 |
| Barry Cockcroft Consulting Ltd | Health & social care | 2024 |
| Bartrans Limited | Transport & logistics | 2018 |
| Base Camp Studios LLP | | 2020 |
| Bataton Ltd | Transport & logistics | 2017 |
| Bath Street Mews Limited | Other services | 2003 |
| Bausan Ltd | Professional & scientific | 2014 |
| Baxen Partners Ltd | Professional & scientific | 2025 |
| Baylis & Peet Hair Ltd | Other services | 2022 |
| Baziloko Limited | Transport & logistics | 2017 |
| BB Transport (Midlands) Ltd | Transport & logistics | 2012 |
| BC Logistics Limited | Hospitality | 2014 |
| BCA Industries Ltd | Extraterritorial | 2022 |
| Bciti Clothings Ltd | Professional & scientific | 2026 |
| BDR Services Ltd | Professional & scientific | 2021 |
| BDR UK Holdings Ltd | Financial services | 2025 |
| BDR UK Properties Ltd | Real estate | 2025 |
| BE Awesome Music Ltd | Information & communication | 2023 |
| BE Subsea Consult Limited | Professional & scientific | 2015 |
| Beacon Hill Retail Consultancy Ltd | Professional & scientific | 2021 |
| Beant Properties LLP | | 2017 |
| Bear Automotive Movements Ltd | Transport & logistics | 2022 |
| Beardgames Ltd | Wholesale & retail | 2022 |
| Beaumont Products Limited | Manufacturing | 2000 |
| Beautiful Things Events Ltd | Wholesale & retail | 2018 |
| Beautique Midlands Limited | Other services | 2011 |
| Beauty by Lauren Colledge Ltd | Other services | 2024 |
| Beauty Collective (Rugby) Ltd | Other services | 2026 |
| Beauty Layer Ltd | Wholesale & retail | 2021 |
| Beauty Leaders Hair Ltd | Other services | 2026 |
| Beauty Leaders Ltd | Other services | 2023 |
| Beautyandbrushes Ltd | Other services | 2020 |
| Beautygroupe Ltd | Wholesale & retail | 2025 |
| Beaver Valley Limited | Real estate | 1989 |
| Becca&Ella Ltd | Transport & logistics | 2019 |
| Becel Properties Ltd | Extraterritorial | 2024 |
| Beck Sport Holdings Ltd | Manufacturing | 2018 |
| BEE Build Properties Ltd | Construction | 2022 |
| BEE Clean Cleaning Services Ltd | Administrative & support | 2022 |
| BEE Smart Today Ltd | Energy | 2018 |
| Beech Tree Medical Practice Ltd | Health & social care | 2006 |
| Beeches Burbage Management Company Limited | Households | 2010 |
| Beechwood Home Management Ltd | Real estate | 2024 |
| Bees Knees Travel Ltd | Transport & logistics | 2016 |
| Beetle Bricks Limited | Real estate | 2015 |
| Before I DIE Ltd | Extraterritorial | 2022 |
| Beith Contract Services Limited | Transport & logistics | 2014 |
| Bell Motors Diagnostic and Tuning Ltd | Wholesale & retail | 2023 |
| Belle Peau J'Adore Spa Ltd | Other services | 2025 |
| Belleberyl Ltd | Professional & scientific | 2024 |
| Belles Accountants Ltd | Professional & scientific | 2022 |
| Bello Cleaning Ltd | Administrative & support | 2024 |
| Beluga Consultant Limited | Information & communication | 2025 |
| Beme Joinery Limited | Manufacturing | 2019 |
| BEN Cheshire PUB Services Ltd | Hospitality | 2023 |
| BEN Street Mortgage Services Limited | Financial services | 2019 |
| Benbold Associates Limited | Professional & scientific | 2024 |
| Bend-X Limited | Wholesale & retail | 2024 |
| Benee Consulting Limited | Professional & scientific | 2017 |
| Bengal Spice ( Rugby ) Limited | Hospitality | 2016 |
| Benn Partnership Centre | Education | 1998 |
| Bennett and Mann Limited | Manufacturing | 2026 |
| Bennett's Signalling Ltd | Manufacturing | 2023 |
| Benridge Limited | Construction | 2010 |
| Benridge SE Limited | Construction | 2021 |
| Bereg Limited | Wholesale & retail | 2023 |
| Bernhard & Co. Holdings Limited | Financial services | 2023 |
| Bernhard Development Company Limited | Construction | 2015 |
| Bernhard Investments Limited | Construction | 2021 |
| Bernhard's Rugby Nurseries Limited | Agriculture & fishing | 1973 |
| Bernhard's Rugby Plant Services Limited | Professional & scientific | 1973 |
| Bernhards Landscapes (Wakefield) Limited | Transport & logistics | 1996 |
| Bernhards Landscapes Limited | Administrative & support | 1996 |
| Bernhards Sports Surfaces Limited | Construction | 1996 |
| Berni LEE Consultancy Limited | Health & social care | 2015 |
| Berrington-Hunsbury Limited | Information & communication | 2017 |
| Berrybalereeve Limited | Administrative & support | 2012 |
| Berserker Services Ltd | Transport & logistics | 2020 |
| Bertalan Euro Trans Ltd | Extraterritorial | 2017 |
| Bespoke Hairdressing Education Ltd | Other services | 2017 |