| Beacon Podiatry Limited | Health & social care | 2010 |
| Beake Medicom Ltd | Professional & scientific | 2021 |
| Bean & Brew Ltd | Hospitality | 2014 |
| Beanstalk PUB Co Limited | Hospitality | 2014 |
| Bear & FOX Construction Ltd | Construction | 2024 |
| Bear Holdings Limited | Financial services | 2019 |
| Beardsley Heath Plumbing & Heating Limited | Construction | 2016 |
| Bears Trading Ltd | Wholesale & retail | 2021 |
| Beauchamp Properties Ltd | Real estate | 2010 |
| Beaudent UK Limited | Health & social care | 2021 |
| Beautiful Digital Ltd | Information & communication | 2020 |
| Beautiful Property Investments Limited | Construction | 2025 |
| Beauty Factory Clinic Ltd | Wholesale & retail | 2018 |
| Beauty Sweet Sun Limited | Wholesale & retail | 2025 |
| Beauty With Christina Ltd | Other services | 2022 |
| Beaux Properties Limited | Administrative & support | 2002 |
| Beaver Agriculture Ltd | Agriculture & fishing | 2023 |
| Beaveremu Ltd | Health & social care | 2021 |
| Becca Aesthetics UK Limited | Other services | 2021 |
| Becks PMS Ltd | Professional & scientific | 2021 |
| Becksford Cyber Analytics Limited | Information & communication | 2014 |
| Becsbackstage Limited | Arts & recreation | 2025 |
| Bedford Cleaners Ltd | Administrative & support | 2011 |
| Bedford Grove (Eastbourne) Management Company Limited | Professional & scientific | 2000 |
| Bedfordshire Property Services Ltd | Construction | 2021 |
| Bedside Manners Limited | Information & communication | 2016 |
| Bee-Leaf Project Ltd | Hospitality | 2020 |
| Beech Antler Properties Limited | Real estate | 2025 |
| Beech Estate Shooting Limited | Agriculture & fishing | 2014 |
| Beech House Dental Practice Limited | Health & social care | 2021 |
| Beechenhurst Ltd | Financial services | 2025 |
| Beechwood Crescent Limited | Households | 1988 |
| Beedog Inc Ltd | Real estate | 2024 |
| Beehive Beauty Limited | Other services | 2017 |
| Beehive, Deli on the Green Ltd | Wholesale & retail | 2022 |
| Bees Honey Ltd | Professional & scientific | 2015 |
| Behan Associates Ltd. | Transport & logistics | 2015 |
| Belarosa Ltd | Information & communication | 2025 |
| Belgravia Land Limited | Construction | 2017 |
| Believe in YOU Teens Limited | Education | 2015 |
| Believe in YOU Wellbeing CIC | Education | 2025 |
| Belkas Rail Services Ltd | Manufacturing | 2012 |
| Bella's Secret Ltd | Manufacturing | 2013 |
| Bellcom Communications Limited | Information & communication | 2011 |
| Belmore Court RTM Company Limited | Households | 2026 |
| Belong Here UK Limited | Real estate | 2019 |
| Beltry Court Residents Association Company Limited | Households | 1993 |
| Bemac Medical Ltd | Health & social care | 2024 |
| BEN Hockings Limited | Extraterritorial | 2016 |
| BEN Lilly Limited | Wholesale & retail | 2008 |
| BEN Salt Radiology Limited | Health & social care | 2018 |
| Ben'Je Limited | Other services | 2015 |
| Benacome Limited | Mining & quarrying | 2012 |
| Benbow Freeholders (64-74) Limited | Hospitality | 1995 |
| Benchmark Brighton Limited | Construction | 1997 |
| Benchmark Medical Limited | Health & social care | 2011 |
| Benenden Holdings Limited | Real estate | 2026 |
| Benerose Ltd | Administrative & support | 2012 |
| Benerose Manufacturing Ltd | Manufacturing | 2022 |
| Benjamins Trees Ltd | Administrative & support | 2014 |
| Benn's Developments Limited | Construction | 2015 |
| Bentley Hotels Limited | Hospitality | 2024 |
| Benton Lodge Management Company Limited | Households | 1974 |
| Berkeley Citation Limited | Information & communication | 2014 |
| Berkeley Court Limited | Households | 1997 |
| Berkeley Wilton Limited | Real estate | 2004 |
| Berkhamsted Eyecare Ltd | Wholesale & retail | 2015 |
| Berkshire Foot and Ankle Ltd | Health & social care | 2019 |
| Berkshire Property and Lets Limited | Real estate | 2024 |
| Bertie Property Sussex Limited | Real estate | 2025 |
| Beson Estates Ltd | Real estate | 2024 |
| Bespoke Electrical Contractors Ltd | Construction | 2023 |
| Bespoke Gastroenterology Limited | Health & social care | 2016 |
| Bespoke Healthcare Solutions Ltd | Health & social care | 2023 |
| Bespoke Orthodontics Limited | Health & social care | 2013 |
| Bespoke Property Renovations (UK) Ltd | Construction | 2013 |
| Bespoke Test Equipment Ltd | Professional & scientific | 2025 |
| Best Bookings Ltd | Information & communication | 2017 |
| Best Life Wealth Partners Limited | Financial services | 2026 |
| Best Practice @ Work Limited | Professional & scientific | 2004 |
| Best Smile Aesthetics Ltd | Health & social care | 2019 |
| Best Sourced Ltd | Real estate | 2019 |
| Bestcourt Properties Limited | Real estate | 2004 |
| Beta Exec Services Ltd | Professional & scientific | 2019 |
| Betil Properties Limited | Real estate | 2018 |
| Betoli Limited | Information & communication | 2014 |
| Betray Ltd | Professional & scientific | 2026 |
| Better Buys Boutique Ltd | Wholesale & retail | 2024 |
| Better Home Builders Limited | Construction | 2012 |
| Betty Holdings Limited | Construction | 2018 |
| Beumée Group Ltd | Public administration | 2025 |
| Bexfield Court Freehold Limited | Households | 2016 |
| Bexfield Court Limited | Households | 1959 |
| Bexhill Beauty Ltd | Extraterritorial | 2025 |
| Bexhill Community Church | Other services | 2000 |
| Bexlet Limited | Hospitality | 2017 |
| BEY Security Ltd | Administrative & support | 2021 |
| Beyond Expert Ltd | Education | 2024 |
| BG Dental Limited | Health & social care | 2025 |
| Bhaktnivas Property Ltd | Real estate | 2023 |