| Bamford Trezise Ltd | Construction | 2018 |
| Bamo Traditional Naan Ltd | Hospitality | 2017 |
| Bamo Travels Ltd | Administrative & support | 2008 |
| Bamora Heights Group Ltd | Administrative & support | 2025 |
| Bams Tech Limited | Manufacturing | 2022 |
| Bamyett Limited | Health & social care | 2020 |
| Bana & Co Accountants Ltd | Extraterritorial | 2020 |
| Bana Aram Accountancy Services Ltd | Extraterritorial | 2020 |
| Banafshe Schippel Ltd | Professional & scientific | 2014 |
| Banah Homes Ltd | Real estate | 2020 |
| Banah Properties Ltd | Real estate | 2021 |
| Banak Limited | Health & social care | 2024 |
| Banana Fritters Ltd | Information & communication | 2022 |
| Bananas Kitchn Ltd | Professional & scientific | 2021 |
| Banbury Dental Limited | Health & social care | 2023 |
| Banbury Foods Ltd | Hospitality | 2024 |
| Banbury Horseboxes Limited | | 1985 |
| Banbury Spice Ltd | Hospitality | 2021 |
| Bancom (GB) Ltd | Professional & scientific | 2000 |
| Bancom Ltd | Professional & scientific | 2009 |
| Bancrofts of London Limited | Real estate | 2003 |
| Band One Ltd | Education | 2024 |
| Bando FAM Limited | Other services | 2025 |
| Bandurance & Co Ltd | Other services | 2023 |
| Baneen's Collection Ltd | Wholesale & retail | 2025 |
| Baneens Ltd | Hospitality | 2025 |
| Banff Intergroup Ltd | Wholesale & retail | 2020 |
| Banff Retail Limited | Wholesale & retail | 2011 |
| Bang Bang Romeo Ltd | Arts & recreation | 2019 |
| Bangash Properties Ltd | Real estate | 2025 |
| Banger & Banger Property Ltd | Real estate | 2026 |
| Banger Properties Limited | Real estate | 2022 |
| Bangers N Mashup CIC | Hospitality | 2021 |
| Bangin Wings Ltd | Hospitality | 2020 |
| Bangla Connection CIC | Professional & scientific | 2021 |
| Bangla Enterprise Ltd | Administrative & support | 2022 |
| Bangla Fresh VEG Ltd | Wholesale & retail | 2013 |
| Bangla Halesowen Limited | Hospitality | 2023 |
| Bangla Investment Ltd | Hospitality | 2017 |
| Bangla Kagoj | Other services | 2006 |
| Bangla Port Fruit and VEG Ltd | Extraterritorial | 2024 |
| Bangla Store AR Limited | Wholesale & retail | 2019 |
| Bangla Voice Limited | Manufacturing | 2014 |
| Bangladesh Community Development | Education | 2004 |
| Bangladesh Community Regeneration Ltd | Administrative & support | 2024 |
| Bangladesh Education and Development Foundation | Other services | 2004 |
| Bangladesh Multi Purpose Centre | Health & social care | 1998 |
| Bangladesh Sports Association UK CIC | Education | 2022 |
| Bangladesh Welfare and Community Centre Birmingham CIC | Health & social care | 2026 |
| Bangladesh Welfare Association Birmingham | Health & social care | 2024 |
| Bangladesh Welfare Learning Centre Limited | Education | 2025 |
| Bangor Delight Limited | Hospitality | 2025 |
| Banh MI SAI GON Ltd | Hospitality | 2025 |
| Banh MI Sandwich Company Limited | Hospitality | 2019 |
| Banham Poultry (2018) Ltd | Manufacturing | 2018 |
| Bani Accountants Ltd | Professional & scientific | 2010 |
| Bani Bookkeeping Services Ltd | Professional & scientific | 2020 |
| Bani Filer Ltd | Administrative & support | 2021 |
| Bani Formations Ltd | Administrative & support | 2022 |
| Bani Gala Food Group Limited | Hospitality | 2026 |
| Bani List Ltd | Wholesale & retail | 2020 |
| Bani Transport Limited | Transport & logistics | 2024 |
| Banished Beats Ltd | Wholesale & retail | 2024 |
| Bank of Zurich Ltd | Real estate | 2004 |
| Bankershouse Limited | Administrative & support | 2008 |
| Banks & Banks Ltd | Information & communication | 2017 |
| Banks Property Group Limited | Administrative & support | 2019 |
| Banner Fire & Safety Limited | Public administration | 2023 |
| Banner Logistics (Midlands) Ltd | Transport & logistics | 2019 |
| Banner of Love Cares Ltd | Professional & scientific | 2022 |
| Banner Printing Service Ltd | Manufacturing | 2025 |
| Banner Theatre Company Limited | Arts & recreation | 1980 |
| Bannerley Studios Limited | Real estate | 2011 |
| Banners Court Residents Association Limited | Other services | 1982 |
| Bannister Ventures Ltd | Professional & scientific | 2022 |
| Bannu GUL Beef Pulao Restaurant Ltd | Hospitality | 2026 |
| Bano Ltd | Hospitality | 2026 |
| Bano Phool Balti Ltd | Hospitality | 2023 |
| Banoful BD Sweets Ltd | Hospitality | 2023 |
| Banoful UK Sweet Ltd | Hospitality | 2018 |
| Banq Studios Limited | Arts & recreation | 2024 |
| Banqyz Ltd | Transport & logistics | 2025 |
| Banroy Property Investments Ltd | Health & social care | 2019 |
| Bansal Construction Ltd | Construction | 2024 |
| Bansal Traders Ltd | Wholesale & retail | 2024 |
| Bansalfruits Ltd | Wholesale & retail | 2025 |
| Banstead Property Services Limited | Construction | 2021 |
| Bantaba Properties Ltd | Construction | 2026 |
| Bantamart Ltd | Wholesale & retail | 2026 |
| Bantham Capital Limited | Financial services | 2024 |
| Banu Indian Restaurant Birmingham Limited | Hospitality | 2023 |
| Banu Indian Restaurant Midlands Limited | Hospitality | 2025 |
| Banu Motors Ltd | Wholesale & retail | 2025 |
| Banwait Solutions Ltd | Transport & logistics | 2016 |
| Banwy Construction Ltd | Construction | 2019 |
| Banyan Tree Enterprise Limited | Wholesale & retail | 2012 |
| BAO Street Ltd | Hospitality | 2025 |
| Baoafrik Ltd | Wholesale & retail | 2025 |
| Baobab Assest Management Limited | Real estate | 2021 |
| Baobab Care Holdings Ltd | Health & social care | 2025 |