| Beetrainedonline Limited | Arts & recreation | 2021 |
| Beetroot Consulting Ltd | Information & communication | 2022 |
| Beever Hire Limited | Administrative & support | 2022 |
| Beewise Energy Ltd | Construction | 2026 |
| Beewrite MCR Ltd | Education | 2025 |
| Beewyse Holdings Limited | Wholesale & retail | 2024 |
| Beezie Ltd | Wholesale & retail | 2022 |
| Beezu Taxi & Parcel Services Limited | Transport & logistics | 2025 |
| Bee’S Knees Nursery & Pre-School Eccles Limited | Education | 2025 |
| Bee’S Knees Nursery & Pre-School Ltd | Education | 2023 |
| Befad Logistics Ltd | Transport & logistics | 2025 |
| Befreaky Ltd | Professional & scientific | 2018 |
| BEG, Steal & Borrow Ltd | Wholesale & retail | 2023 |
| Begal Fast Food Oldham Ltd | Hospitality | 2021 |
| Beged Limited | Other services | 2019 |
| Begh Ltd | Hospitality | 2024 |
| Begi Kebabs Ltd | Hospitality | 2021 |
| Begubeeni Ltd | Wholesale & retail | 2018 |
| Begum Takeaway Ltd | Hospitality | 2017 |
| Behappy (the DEN) Limited | Health & social care | 2023 |
| Behemoth Inst. for Research and Development Ltd | Administrative & support | 2025 |
| Behind Sport Ltd | Other services | 2019 |
| Behind the Agent Limited | Professional & scientific | 2011 |
| Behind the Counter Group Ltd | Financial services | 2017 |
| Behind the Counter Ltd | Hospitality | 2018 |
| Behive Design Ltd | Information & communication | 2017 |
| Behtech Systems Limited | Administrative & support | 2017 |
| Beijing Bert Ltd | Hospitality | 2018 |
| Beijing Express Limited | Hospitality | 2018 |
| Beijo Sweets Market Ltd | Wholesale & retail | 2025 |
| Being One Ltd | Extraterritorial | 2022 |
| Beinhaker Design Services Limited | Professional & scientific | 2015 |
| Beinhaker Sutton Limited | Real estate | 2021 |
| Beinit Energy Limited | Mining & quarrying | 2020 |
| Beirne M Limited | Wholesale & retail | 2017 |
| Beis Hamedrash Hechodosh | Other services | 2003 |
| Beis Hamedrash OHR Chodosh Limited | Other services | 2002 |
| Beis Hatalmud Manchester | Education | 2006 |
| Beis Property Limited | Real estate | 2015 |
| Beis Yaakov Jewish High School Academy | Education | 2012 |
| Beis Yisroel Trust | Administrative & support | 2011 |
| Beit Al-Hummus Ltd | Other services | 2024 |
| Beit AVI Limited | | 2010 |
| Beith Ltd | Administrative & support | 2022 |
| Bejaia Home Ltd | Wholesale & retail | 2021 |
| Bekan Investments Limited | Real estate | 2005 |
| Bekey Co., Ltd | Extraterritorial | 2022 |
| Bekky and Sons Limited | Wholesale & retail | 2020 |
| Bekoh Ltd | Wholesale & retail | 2019 |
| Bekyarov Building & Decorating Limited | Other services | 2023 |
| Bekyarov Painting & Decorating Limited | Transport & logistics | 2017 |
| BEL Air Realty Ltd | Construction | 2023 |
| BEL BEL Beauty Ltd | Wholesale & retail | 2022 |
| BEL Cielo Worldwide LP | | 2014 |
| BEL Investments (London) Ltd | Real estate | 2020 |
| BEL Maison Limited | Wholesale & retail | 2018 |
| BEL Mendes Ltd | Information & communication | 2023 |
| BEL Services Ltd | Administrative & support | 2022 |
| BEL Viso Aesthetics Studio Ltd | Other services | 2023 |
| Belal and Mohamed for Advanced Trade Ltd | Wholesale & retail | 2025 |
| Belal Khaled Mohammed Othman for Trading Ltd | Wholesale & retail | 2026 |
| Belarch Limited | Professional & scientific | 2025 |
| Belatime (UK) Ecology Technology Co., Ltd. | Extraterritorial | 2019 |
| Belatun Ltd | Real estate | 2021 |
| Belavita Trademark Ltd | Wholesale & retail | 2025 |
| Belde Fixing Ltd | Construction | 2020 |
| Belema Limited | Real estate | 2009 |
| Belfast Cityside Assets (NO 2) Limited | Real estate | 2021 |
| Belfast Cityside Assets (NO 3) Limited | Real estate | 2022 |
| Belfast Cityside Assets Limited | Real estate | 2021 |
| Belfast Cityside LP | | 2021 |
| Belfast Coleraine Assets (NO 2) Limited | Extraterritorial | 2015 |
| Belfast Coleraine Assets Limited | Extraterritorial | 2015 |
| Belfast Dundonald Assets (NO 2) Limited | Extraterritorial | 2017 |
| Belfast Dundonald Assets Limited | Extraterritorial | 2017 |
| Belfast Holywood GP LLP | | 2020 |
| Belfast Holywood LP | | 2020 |
| Belfast Holywood Nominees 1 Limited | Real estate | 2020 |
| Belfast Holywood Nominees 2 Limited | Real estate | 2020 |
| Belfast Shane LP | | 2020 |
| Belfast Springvale Assets (NO 2) Limited | Extraterritorial | 2015 |
| Belfast Springvale Assets Limited | Extraterritorial | 2015 |
| Belfast Victoria Assets (NO 2) Limited | Extraterritorial | 2015 |
| Belfast Victoria Assets Limited | Extraterritorial | 2015 |
| Belfield & Co Limited | Professional & scientific | 2010 |
| Belfmoor Investments Limited | Real estate | 2019 |
| Belgrave Day Nurseries Limited | Education | 1991 |
| Belgrave Industrial Limited | Real estate | 2007 |
| Belgrave Property Management Services Limited | Real estate | 2024 |
| Belgravia Commercial Ltd | Professional & scientific | 2003 |
| Belgravia Construction Limited | Construction | 2022 |
| Belgravia Family Ltd | Construction | 2023 |
| Belgravia Freehold Limited | Real estate | 2024 |
| Belgravia Management Limited | Construction | 2023 |
| Belgravia Worldwide Limited | Other services | 2023 |
| Belhaven Clean Ltd | Administrative & support | 2025 |
| Belhaven Estates Ltd | Construction | 2024 |
| Believe and Achieve Support Ltd | Health & social care | 2022 |
| Believer X Ltd | Wholesale & retail | 2025 |
| Believers Business Network (BBN) CIC | Administrative & support | 2025 |