| Beefy's Restaurants Limited | Hospitality | 2015 |
| Beermats Limited | Extraterritorial | 2013 |
| Beetroot & More Limited | Hospitality | 2023 |
| Beetroot & Mortar Ltd | Real estate | 2021 |
| Beetroot Group Limited | Hospitality | 2018 |
| Beeversa Ltd | Information & communication | 2025 |
| Beevra Ltd | Wholesale & retail | 2025 |
| Beginning 2 END Limited | Professional & scientific | 2003 |
| Behegan Lynes Limited | Professional & scientific | 2003 |
| Behold! Productions Limited | Education | 2020 |
| Beitel LLP | | 2023 |
| Beity Group Ltd | Hospitality | 2019 |
| Bejoy Hospitality Limited | Hospitality | 2021 |
| BEK Barber Ltd | Other services | 2020 |
| BEK Ltd | Information & communication | 1999 |
| Belem Investments Limited | Administrative & support | 2000 |
| Beleza Lounge Ltd | Other services | 2019 |
| Beleza Studio Ltd | Other services | 2025 |
| Belfey Limited | Wholesale & retail | 2022 |
| Belford Holdings Limited | Financial services | 2015 |
| Belford Publishing Limited | Information & communication | 2020 |
| Belgarum Consultancy Limited | Information & communication | 2002 |
| Belgrave Fitness Ltd | Arts & recreation | 2024 |
| Belgravia Models Ltd | Administrative & support | 2025 |
| Belikeed Limited | Wholesale & retail | 2025 |
| Belinda Clark Limited | Extraterritorial | 2015 |
| Bell Harmony Ltd | Wholesale & retail | 2025 |
| Bell Innovation Limited | Information & communication | 2005 |
| Bella 5 Beans Ltd | Manufacturing | 2024 |
| Bella Alice Yachting Ltd | Arts & recreation | 2016 |
| Bella Bars Limited | Hospitality | 2016 |
| Bella Hotels Limited | Hospitality | 2023 |
| Bella Nusa Ltd | Administrative & support | 2021 |
| Bella Vibe Studio Ltd | Other services | 2024 |
| Bellary Art Limited | Wholesale & retail | 2022 |
| Belle Casa (Berkshire) Ltd | Administrative & support | 2014 |
| Bellessa Lounge Limited | Other services | 2021 |
| Bellgrange Properties Limited | Real estate | 2004 |
| Bellisima the Salon Ltd | Other services | 2021 |
| Bellottnguyen Limited | Information & communication | 2016 |
| Bells Controls Ltd | Manufacturing | 2015 |
| Bellshourne Limited | Households | 1975 |
| Belong Design & Build Limited | Construction | 2026 |
| Belvedere Homes Ltd | Real estate | 2023 |
| BEN Dehaan Equine Limited | Arts & recreation | 2018 |
| BEN Grant Engineering Ltd | Manufacturing | 2012 |
| BEN Moss Education Ltd | Education | 2021 |
| BEN Tibbetts Electrical Limited | Construction | 2017 |
| BEN ZI BEN Carpentry & Joinery Limited | Manufacturing | 2024 |
| Ben's Sister Limited | Manufacturing | 2007 |
| Bena Surveys Ltd | Professional & scientific | 2010 |
| Benana Music Studios Ltd | Education | 2024 |
| Benanacademy Ltd | Professional & scientific | 2026 |
| Benchmark Construction & Development Ltd | Construction | 2012 |
| Benchmark Print & Embroidery Limited | Manufacturing | 2018 |
| Benedictus Community Services CIC | Health & social care | 2025 |
| Beneficial Apparatus Ltd | Wholesale & retail | 2025 |
| Benefit Administration Centre Ltd | Information & communication | 2006 |
| Benefit Cars Ltd | Wholesale & retail | 2015 |
| Beneiva Ltd | Hospitality | 2026 |
| Bengal Paradise Limited | Hospitality | 2010 |
| Bengyela Ltd | Health & social care | 2018 |
| Benham Holdings Limited | Administrative & support | 2019 |
| Benifel Logistics Ltd | Transport & logistics | 2024 |
| Benifex Financial Solutions Ltd | Information & communication | 2007 |
| Benifex Holdings Limited | Professional & scientific | 2007 |
| Benifex Limited | Information & communication | 2003 |
| Benifex Payments Limited | Information & communication | 2023 |
| Benify UK Limited | Administrative & support | 2013 |
| Benipal Transport Limited | Transport & logistics | 2026 |
| Benjamin Perham Designs Ltd | Professional & scientific | 2024 |
| BENJAMIN1 Installations Limited | Construction | 2024 |
| Benmaof Limited | Manufacturing | 2025 |
| Bennapp Limited | Transport & logistics | 2016 |
| Bennett & Merritt Coffee Lounge Limited | Hospitality | 2024 |
| Bennett House Ltd | Construction | 2024 |
| Bennett Plastering and Rendering Ltd | Construction | 2015 |
| Benni Ltd | Health & social care | 2018 |
| Benny 1505 Ltd | Transport & logistics | 2018 |
| Benny's Burgertown Ltd | Hospitality | 2017 |
| Benoco Productions Ltd | Arts & recreation | 2025 |
| Benson & Rogers Investments Ltd | Real estate | 2014 |
| Benson and Moore Limited | Extraterritorial | 2021 |
| Benson Consultants Limited | Financial services | 2015 |
| Bentley Construction Holdings Limited | Construction | 2006 |
| Bentley Marine Ltd | Professional & scientific | 2021 |
| Bentley Projects Limited | Construction | 2004 |
| Bentley SIP Systems Limited | Construction | 2004 |
| Beoly Ltd | Wholesale & retail | 2024 |
| BER Corporation Limited | Professional & scientific | 2022 |
| Berat Darvan Ltd | Wholesale & retail | 2024 |
| Bere Forest Tree Services & Logs Ltd | Administrative & support | 2026 |
| Bere Forest Tree Services Ltd | Administrative & support | 2025 |
| Berezan Ltd | Construction | 2025 |
| Berkeby Ltd | Information & communication | 2025 |
| Berkeley Court (Walled Garden) Management Company NO. 2 Limited | Households | 1991 |
| Berkeley Fintech Partners Limited | Information & communication | 2024 |
| Berkeley Tax Consultants (UK) Limited | Professional & scientific | 2011 |
| Berkelium Estate Ltd | Real estate | 2024 |
| Berkshire Cleaning Services Limited | Administrative & support | 2010 |