| B6 Lighting Limited | Wholesale & retail | 2011 |
| B6 Squeaky Clean Limited | Administrative & support | 2012 |
| B63FOODS Ltd | Hospitality | 2025 |
| B69 Limited | Households | 2007 |
| B7 Capital Limited | Real estate | 2020 |
| B7 Catering Ltd | Wholesale & retail | 2020 |
| B7 Housing Ltd | Real estate | 2024 |
| B7 Properties Limited | Real estate | 2021 |
| B70 Investments Ltd | Real estate | 2025 |
| B75 Ltd | Hospitality | 2012 |
| B8 C ENG Limited | Professional & scientific | 2022 |
| B88 Restaurant and KTV Ltd | Hospitality | 2025 |
| B98 Property Investments Limited | Real estate | 2020 |
| B:Music (Enterprises) Ltd | Other services | 1996 |
| B:Music Ltd | Administrative & support | 1996 |
| B:Rap Ltd | Administrative & support | 1999 |
| BA Academy Limited | Education | 2026 |
| BA Accountants (WM) Ltd | Professional & scientific | 2021 |
| BA Gibbons Ltd | Financial services | 2025 |
| BA Holding Group Ltd | Other services | 2025 |
| BA Homes Limited | Real estate | 2024 |
| BA Hundal Property Ltd | Households | 2025 |
| BA Investments(Uk) Limited | Real estate | 2013 |
| BA Legal Limited | Professional & scientific | 2019 |
| BA Studio Ltd | Professional & scientific | 2025 |
| BA Suppliers Ltd | Manufacturing | 2024 |
| BAA Management Limited | Arts & recreation | 2014 |
| BAA Property Management Ltd | Households | 2016 |
| Baabzi Kings Heath Ltd | Hospitality | 2024 |
| Baaco Ltd | Construction | 2019 |
| Baad X 2025 Ltd | Wholesale & retail | 2025 |
| Baafi Commerce Limited | Wholesale & retail | 2025 |
| Baaj Associates Ltd | Real estate | 2021 |
| Baana Workwear Ltd | Manufacturing | 2024 |
| Baari Solutions Limited | Wholesale & retail | 2017 |
| Baasha Trading Co. Ltd | Wholesale & retail | 2025 |
| Baata Linen Limited | Other services | 2023 |
| Baay Resources UK Limited | Real estate | 2008 |
| Baaz Property Holdings Ltd | Real estate | 2024 |
| Baaz Taxis Ltd | Transport & logistics | 2018 |
| Baazuk Limited | Wholesale & retail | 2023 |
| BAB AL Hara Catering Ltd | Other services | 2023 |
| BAB AL Hara Lounge Ltd | Other services | 2023 |
| BAB AL Hara Properties Ltd | Real estate | 2025 |
| BAB AL Rayana Banqueting and Restaurant Ltd | Hospitality | 2024 |
| BAB Al-Ridha Publications Ltd | Wholesale & retail | 2021 |
| BAB Alhara Banqueting Suite Ltd | Other services | 2013 |
| Bab-E-Khybar Limited | Hospitality | 2015 |
| Baba ALI Ltd | Manufacturing | 2012 |
| Baba ALI Non-Profit Organisation Ltd | Administrative & support | 2018 |
| Baba Deep Singh Ltd | Transport & logistics | 2025 |
| Baba Fashion Limited | Wholesale & retail | 2025 |
| Baba Shop Ltd | Wholesale & retail | 2022 |
| Babaji Limited | Other services | 2009 |
| Babans Car Ltd | Wholesale & retail | 2025 |
| Babar Builders Ltd | Construction | 2020 |
| Babaraqis Traders Ltd | Wholesale & retail | 2009 |
| Babarfayyaz Ltd | Wholesale & retail | 2025 |
| Babay Limited | Education | 2021 |
| Babay Medical Ltd | Health & social care | 2014 |
| Babber Jewellers Limited | Manufacturing | 2016 |
| Babbergdp Limited | Wholesale & retail | 2024 |
| Babbu Builder UK Constructions Ltd | Construction | 2024 |
| BABEL42 Ltd | Information & communication | 2026 |
| Baberali-Cars Ltd | Wholesale & retail | 2020 |
| Babes in the Wood CIC | Health & social care | 2018 |
| Babettas (UK) Ltd | Real estate | 2019 |
| Bablu Limited | Real estate | 2018 |
| Babs Enterprises Limited | Other services | 2019 |
| Babscareuk Community Interest Company | Public administration | 2025 |
| Babx Trade Ltd | Wholesale & retail | 2025 |
| Baby AID Birmingham Community Interest Company | Other services | 2020 |
| Baby Gorilla Ltd | Information & communication | 2026 |
| Baby Harvey Ltd | Education | 2021 |
| Baby Mama Love Ltd | Wholesale & retail | 2024 |
| Baby Sensory (Birmingham South) Limited | Education | 2010 |
| Baby Snooze Limited | Wholesale & retail | 2018 |
| Babyam Traders Limited | Wholesale & retail | 2025 |
| Babybabyonline Limited | Wholesale & retail | 2018 |
| Babybond Limited | Health & social care | 2009 |
| Babybuys Limited | Wholesale & retail | 2015 |
| Babylon Cafe Limited | Hospitality | 2021 |
| Babylon Property Holdings Limited | Real estate | 2026 |
| BABYLON2008 Limited | Transport & logistics | 2025 |
| Babynattz & Shay Ltd | Construction | 2025 |
| Babyshop AB Limited | Wholesale & retail | 2024 |
| BAC Transport Services Ltd | Transport & logistics | 2021 |
| Bacanu Express Ltd | Transport & logistics | 2025 |
| Bacchus Associates Ltd | Administrative & support | 2021 |
| Bacchus Convenience Store Limited | Wholesale & retail | 2022 |
| Bacchus Leisure Limited | Hospitality | 2008 |
| Bacchus Sun Ltd | Wholesale & retail | 2020 |
| Bace Construction Consultants Ltd | Professional & scientific | 2004 |
| Bache Medico Legal Limited | Health & social care | 2025 |
| Bache Samuels Ltd | Professional & scientific | 2013 |
| Bachi's Investment Properties Limited | Real estate | 2020 |
| Bachmann Electrical Engineering Limited | Manufacturing | 2011 |
| Back 2 Life Chiropractors Limited | Health & social care | 2011 |
| Back Office Limited | Professional & scientific | 2002 |
| Back Office Management Limited | Information & communication | 2012 |