| Bayt AL Fann Ltd | Wholesale & retail | 2021 |
| Bayt Nuba Ltd | Wholesale & retail | 2025 |
| Baytree Convenience Store Limited | Wholesale & retail | 2019 |
| Bayyinah Ltd | Professional & scientific | 2025 |
| BAZ & DAD Ltd | Construction | 2020 |
| BAZ Foods Ltd | Hospitality | 2019 |
| BAZ Travel Limited | Administrative & support | 2017 |
| Bazaar Gyros Ltd | Hospitality | 2025 |
| Bazaarnet Ltd | Wholesale & retail | 2025 |
| Bazhaa Limited | Wholesale & retail | 2025 |
| Bazs Barbers MCR Ltd | Other services | 2024 |
| Baztex Ltd | Wholesale & retail | 2024 |
| Bazuka Environmental Ltd | Wholesale & retail | 2024 |
| Bazysky Ltd | Wholesale & retail | 2022 |
| Bazzar Market Ltd | Wholesale & retail | 2020 |
| BB 2021 Ltd | Administrative & support | 2021 |
| BB Aesthetics Limited | Other services | 2017 |
| BB Consultancies Ltd | Information & communication | 2015 |
| BB Corner Shop Limited | Wholesale & retail | 2024 |
| BB Dinner Limited | Wholesale & retail | 2018 |
| BB Europe Ukeig | Professional & scientific | 1992 |
| BB Fibre Limited | Information & communication | 2026 |
| BB MCR Ltd | Wholesale & retail | 2025 |
| BB Nannies Ltd | Health & social care | 2021 |
| BB Realisations 2026 Limited | Wholesale & retail | 2007 |
| BB Recruitment Ltd | Financial services | 2024 |
| BB Vision Design Build Limited | Construction | 2025 |
| Bb&J Consulting Limited | Professional & scientific | 2018 |
| BBA London Finance Limited | Financial services | 2022 |
| Bbcomm Ltd | Professional & scientific | 2010 |
| BBF (Shropshire) Limited | Wholesale & retail | 2008 |
| Bbfd Limited | Real estate | 2013 |
| Bbhh Investments LLP | | 2016 |
| BBJ Estates Ltd | Administrative & support | 2020 |
| BBK HQ Limited | Financial services | 2024 |
| BBL Brothers Ltd | Hospitality | 2025 |
| BBL Realisations Limited | Manufacturing | 2023 |
| Bblm 888 Ltd | Construction | 2016 |
| BBM 786 Ltd | Wholesale & retail | 2024 |
| BBM Afghan Food Ltd | Hospitality | 2023 |
| BBM Afghan Longsight Ltd | Wholesale & retail | 2025 |
| BBM Bar Store Ltd | Wholesale & retail | 2024 |
| BBM Bargain Castleford Ltd | Wholesale & retail | 2025 |
| BBM Bargain Eastwood Ltd | Wholesale & retail | 2026 |
| BBM Chorlton Limited | Wholesale & retail | 2025 |
| BBM North West Services Limited | Construction | 2025 |
| BBN Realisations Limited | Manufacturing | 2023 |
| Bboujee Ltd | Wholesale & retail | 2017 |
| BBQ Sticks Ltd | Hospitality | 2026 |
| Bbquantum Ltd | Wholesale & retail | 2023 |
| BBS Car Rental Ltd | Wholesale & retail | 2025 |
| BBS Contracting Limited | Construction | 2018 |
| BBT Bolton Ltd | Hospitality | 2025 |
| Bbtrading NW Ltd | Other services | 2020 |
| BC Audiology Services Ltd | Wholesale & retail | 2018 |
| BC Capital Group Limited | Real estate | 2020 |
| BC Financial Search Ltd | Administrative & support | 2026 |
| BC Invest Ltd | Real estate | 2026 |
| BC Joinery & Construction Ltd | Administrative & support | 2018 |
| BC Manchester Construction Ltd | Construction | 2024 |
| BC Nwaiwu & Co Ltd | Professional & scientific | 2020 |
| BC Property Holdings Ltd | Real estate | 2026 |
| BC Trade Network Limited | Wholesale & retail | 2021 |
| BC Transport (Bollington) 1991 Limited | Professional & scientific | 2017 |
| BC Transport 2017 Limited | Transport & logistics | 2004 |
| BC1.0 Ltd | Real estate | 2009 |
| BC1.03 Ltd | Real estate | 2009 |
| BC1.04 Ltd | Real estate | 2009 |
| BC1.05 Ltd | Real estate | 2009 |
| BC1.07 Ltd | Real estate | 2009 |
| BC1.08 Ltd | Real estate | 2009 |
| BC21.0 Ltd | Real estate | 2009 |
| BC21.01 Ltd | Real estate | 2009 |
| BC21.02 Ltd | Real estate | 2009 |
| BC21.05 Ltd | Real estate | 2009 |
| BC21.06 Ltd | Real estate | 2009 |
| BC21.07 Ltd | Real estate | 2009 |
| BC21.08 Ltd | Real estate | 2009 |
| BC21.09 Ltd | Real estate | 2009 |
| BC21.10 Ltd | Real estate | 2009 |
| BC3.01 Ltd | Real estate | 2009 |
| BCA BUS Engineering Ltd | Information & communication | 2016 |
| Bcbb Limited | Professional & scientific | 2026 |
| BCD Logistics Ltd | Transport & logistics | 2014 |
| BCD Transport & Distribution Ltd | Transport & logistics | 2021 |
| Bcdnq Ltd | Hospitality | 2022 |
| Bcdventures Ltd | Hospitality | 2025 |
| Bceg International (UK) Ltd | Construction | 2013 |
| Bcegi Construction (UK) Ltd | Construction | 2013 |
| Bcegi Holdings (UK) Limited | Financial services | 2014 |
| BCF Capital Limited | Financial services | 1998 |
| BCF CIV Limited | Financial services | 2025 |
| BCF Healthcare Ltd | Health & social care | 2025 |
| Bcfj Property Ltd | Households | 2026 |
| BCH Trust | Administrative & support | 2010 |
| Bchaintech Ltd | Information & communication | 2023 |
| Bcherished Merchandise Limited | Wholesale & retail | 2021 |
| BCI Service Ltd | Construction | 2017 |
| Bckc Holdings Limited | Construction | 2022 |
| BCL (North West) Limited | Wholesale & retail | 2006 |