| Bearwood Market Ltd | Arts & recreation | 2021 |
| Bearwood Nursing Home Limited | Hospitality | 2003 |
| Bearwood Snooker Complex Ltd | Hospitality | 2021 |
| Bearwood Tools Ltd | Wholesale & retail | 2024 |
| Bearwood Tyre Centre Ltd | Manufacturing | 2019 |
| BEC Group Limited | Construction | 2018 |
| BEE Logistics WM Ltd | Transport & logistics | 2020 |
| Beeba Motors Ltd | Wholesale & retail | 2025 |
| Being Resolver Ltd | Wholesale & retail | 2021 |
| Belaire Cars Limited | Wholesale & retail | 2019 |
| Belaire Property Limited | Real estate | 2021 |
| Bell - a - Pizza Smethwick Ltd | Hospitality | 2023 |
| Bell-A-Pizza U.K. Ltd | Hospitality | 2023 |
| Bellavitaboost Ltd | Other services | 2025 |
| Bellefield Auto Services Ltd | Wholesale & retail | 2024 |
| Bellefield Brewery (1911) Ltd | Hospitality | 2021 |
| Bellefield Court Developments Limited | Construction | 2022 |
| Bemusa UK Limited | Wholesale & retail | 2021 |
| Benchmarkk Global Ltd | Wholesale & retail | 2021 |
| Bensam Ltd | Information & communication | 2024 |
| Benwell Fireworks Limited | Wholesale & retail | 2005 |
| Bespoke Broadway Kitchens Ltd | Manufacturing | 2020 |
| Bessa Trading Ltd | Wholesale & retail | 2022 |
| Best Choice Befriending Services CIC | Health & social care | 2020 |
| Best Choice Events Limited | Hospitality | 2022 |
| Best Dish Limited | Hospitality | 2014 |
| Best One Heating & Plumbing Ltd | Construction | 2016 |
| BESTGRACE4U Ltd | Wholesale & retail | 2021 |
| BET on Yourself Productions Ltd | Information & communication | 2025 |
| Bety Beauty Ltd | Other services | 2020 |
| Bevin Ltd | Manufacturing | 2012 |
| BG Creationz Ltd | Information & communication | 2025 |
| BG Suiting Ltd | Wholesale & retail | 2017 |
| BGJ Transport Ltd | Transport & logistics | 2025 |
| Bharawan DA Dhaba Ltd | Manufacturing | 2021 |
| BHM Housing Ltd | Real estate | 2025 |
| BHM Transport Limited | Transport & logistics | 2016 |
| Bhsh Ltd | Wholesale & retail | 2026 |
| Bhullar Cargo Ltd | Transport & logistics | 2025 |
| Bhullar Properties Ltd | Real estate | 2019 |
| Bhullar Transport (UK) Ltd | Transport & logistics | 2010 |
| Bhullar Transport Ltd | Transport & logistics | 2014 |
| Big Boss Music Ltd | Information & communication | 2011 |
| Big Fann Ltd | Transport & logistics | 2026 |
| Big Wave Management Ltd | Professional & scientific | 2015 |
| Big Work Group Ltd | Construction | 2024 |
| Biggleswade PJ Ltd | Hospitality | 2024 |
| Bilston Supernewz Ltd | Wholesale & retail | 2018 |
| Binary SYS Limited | Information & communication | 2015 |
| Bionix Gear Ltd | Wholesale & retail | 2022 |
| Biovelle Ltd | Health & social care | 2025 |
| Birmingham Automotive Ltd | Wholesale & retail | 2023 |
| Birmingham Bond Limited | Transport & logistics | 2020 |
| Birmingham Drink Ltd | Wholesale & retail | 2022 |
| Birmingham Iron Bulls Football Academy Ltd | Education | 2026 |
| Birmingham IVA Services Ltd | Wholesale & retail | 2022 |
| Birmingham Kebabs WM Ltd | Hospitality | 2017 |
| Birmingham Music Archive C.I.C. | Arts & recreation | 2017 |
| Birmingham Passenger Transport Ltd | Transport & logistics | 2024 |
| Birmingham Roller Derby Limited | Administrative & support | 2017 |
| Birmingham SA Limited | Hospitality | 2025 |
| Birmingham Security Systems Ltd | Administrative & support | 2009 |
| Birmingham Shutters Ltd | Wholesale & retail | 2018 |
| Birmingham Steel Limited | Manufacturing | 2021 |
| Birmingham Superstore Limited | Wholesale & retail | 2024 |
| Birmingham Travel Services Ltd | Administrative & support | 2025 |
| Birring Haulage Limited | Administrative & support | 2016 |
| Bismaad Properties Ltd | Real estate | 2023 |
| Bisnabane Ltd | Professional & scientific | 2023 |
| Bita Tailoring Ltd | Professional & scientific | 2021 |
| Bitz and Bytes (WM) Ltd | Wholesale & retail | 2022 |
| BJ Cheese (Holdings) Limited | Financial services | 2016 |
| BJ Cheese Group Limited | Financial services | 2024 |
| BJM Motors Limited | Wholesale & retail | 2026 |
| BJS Builders Ltd | Construction | 2024 |
| BK MOT Centre Limited | Wholesale & retail | 2012 |
| BK Properties WM Ltd | Real estate | 2024 |
| BLA Transport Ltd | Transport & logistics | 2025 |
| Black Country Alpha Developments Ltd | Construction | 2025 |
| Black Country Associates Ltd | Construction | 2025 |
| Black Country Property Limited | Real estate | 2019 |
| Black Country Touring | Arts & recreation | 1997 |
| Black Eagle Career Consultancy Ltd | Education | 2025 |
| Black Panther Software Ltd | Information & communication | 2020 |
| Black Star Restaurant Ltd | Hospitality | 2026 |
| Black Swan Investments Limited | Real estate | 2025 |
| Blackcountry Motors Ltd | Wholesale & retail | 2023 |
| Blackocean Ltd | Professional & scientific | 2015 |
| Blackthorne 1968 Limited | Extraterritorial | 2014 |
| Blake Building Solutions Ltd | Construction | 2017 |
| Blakey's Eastern Memories Ltd | Hospitality | 2016 |
| Blakeys Eastern Ltd | Hospitality | 2021 |
| Blaze Computers Ltd | Construction | 2020 |
| Blest Health Ltd | Health & social care | 2024 |
| Blinds DUO Ltd | Other services | 2024 |
| Blissful Home Builders UK Ltd | Construction | 2023 |
| Bloxwich Valley Wines Ltd | Wholesale & retail | 2023 |
| Blue Diamond Software Ltd | Construction | 2020 |
| Blue Eyee Ltd | Information & communication | 2023 |
| Blue Gates (UK) Ltd | Wholesale & retail | 2012 |