| Billy Rashford Limited | Administrative & support | 2022 |
| Bilston Auto Services Ltd | Wholesale & retail | 2020 |
| Bilston Contract Flooring Ltd | Wholesale & retail | 2019 |
| Bilston Holdings Ltd | Real estate | 2025 |
| Bilston Meat Master Ltd | Wholesale & retail | 2020 |
| Bilston Rugs Ltd | Wholesale & retail | 2025 |
| Bilston Wines Ltd | Wholesale & retail | 2016 |
| Binachi Medical Services Ltd | Health & social care | 2010 |
| Bincy Joy Limited | Wholesale & retail | 2016 |
| Binder & Binder Investments Limited | Real estate | 2019 |
| Bindi Consultancy Ltd | Professional & scientific | 2010 |
| Bindi Wedding Services Ltd | Other services | 2025 |
| Bindi World Ltd | Wholesale & retail | 2019 |
| Binfaisal Ltd | Information & communication | 2025 |
| Bingham Design Services Ltd | Wholesale & retail | 2009 |
| Bingo Writers Ltd | Wholesale & retail | 2023 |
| Binning Corp LLP | | 2021 |
| Binning Holdings Limited | Other services | 2016 |
| Binning Investment Group LLP | | 2021 |
| BIO Innovation Ventures Limited | Manufacturing | 2025 |
| BIO Regeneration Clinic Ltd | Health & social care | 2021 |
| Bioland Ltd | Professional & scientific | 2023 |
| Biologyx Ltd | Professional & scientific | 2024 |
| Bioluminux Wolverhampton Ltd | Health & social care | 2024 |
| Bion Electrical Ltd | Construction | 2014 |
| Bioskin Aesthetics Limited | Wholesale & retail | 2020 |
| Bioskin Health CIC | Education | 2025 |
| Biotica Chemicals Ltd. | Manufacturing | 2022 |
| Biran Estates Ltd | Real estate | 2024 |
| Biran Homes Ltd | Construction | 2020 |
| Biran Homes Plot 1-18 Baldwin Road Ltd | Construction | 2024 |
| Birch Garden Supplies Limited | Wholesale & retail | 2014 |
| Birchcroft Associates Ltd | Professional & scientific | 2013 |
| Birchfield Educational Trust Limited | Education | 1962 |
| Birchwood Investments LLP | | 2008 |
| Bird BOI Limited | Hospitality | 2022 |
| Birford Cable & Harness Limited | Manufacturing | 1978 |
| Birkdale Homes UK Ltd | Health & social care | 2008 |
| Birmingham Deafblind Ltd | Professional & scientific | 2024 |
| Birmingham Drinks Stop Ltd | Wholesale & retail | 2024 |
| Birmingham Forktrucks Services Ltd | Manufacturing | 2016 |
| Birmingham Meat & EAT Ltd | Hospitality | 2025 |
| Birring 365 Ltd | Real estate | 2020 |
| Biryani Bites Ltd | Hospitality | 2025 |
| Bishop Building & Roofing Limited | Construction | 2012 |
| Bishop Oak Solutions Limited | Administrative & support | 2019 |
| Bishoprise Limited | Manufacturing | 2012 |
| Bishopsgate Land Management Limited | Real estate | 2013 |
| Biskay Property Traders Limited | Real estate | 2024 |
| Bisla Freight Ltd | Transport & logistics | 2025 |
| Bisla Holdings Limited | Health & social care | 2024 |
| Bisla Services Ltd | Construction | 2026 |
| Bislas Holdings Limited | Health & social care | 2024 |
| Bismark Amman Limited | Wholesale & retail | 2017 |
| Bitsgroup Tech Ltd | Information & communication | 2025 |
| Bittersweet Investments Ltd | Real estate | 2022 |
| Bittersweet Mortgages Ltd | Financial services | 2024 |
| Bituseal Ltd | Construction | 2025 |
| Biyaa & Azwa Ltd | Wholesale & retail | 2025 |
| Bizlive Limited | Information & communication | 2009 |
| Bizmore Limited | Wholesale & retail | 2025 |
| BJ Fleets Ltd | Manufacturing | 2021 |
| BJ Hughes Metals (Coseley) Limited | Water & waste | 2008 |
| BJ Powder Coating Ltd | Manufacturing | 2016 |
| BJB Hair Limited | Other services | 2022 |
| BJD Empire Limited | Health & social care | 2023 |
| BJM Holding Company Limited | Financial services | 2015 |
| BJS Pharma Ltd | Wholesale & retail | 2021 |
| BK Building Ltd | Construction | 2018 |
| BK Inspection Services Ltd | Professional & scientific | 2025 |
| BK Music Services Ltd | Arts & recreation | 2023 |
| BK Properties Services Limited | Real estate | 2018 |
| BK Transport and Logistics Ltd | Transport & logistics | 2018 |
| BK UK Builders Ltd | Construction | 2024 |
| BK3 Training Limited | Administrative & support | 2005 |
| Bkdj Commercial Ltd | Real estate | 2022 |
| Bkdj Properties Ltd | Real estate | 2021 |
| Bksh Property Investments Ltd | Real estate | 2024 |
| BL Health Solutions Ltd | Health & social care | 2016 |
| BL Watch Repair Ltd | Manufacturing | 2022 |
| Black & Diverse Safeguarding Professionals CIC | Professional & scientific | 2025 |
| Black & Gold Holdings Limited | Real estate | 2020 |
| Black Beatles Ltd | Financial services | 2025 |
| Black Bones Jewellery Ltd | Manufacturing | 2025 |
| Black Country Business Solutions Limited | Information & communication | 2022 |
| Black Country Chamber of Commerce & Industry | Other services | 2001 |
| Black Country Estates Ltd | Construction | 2026 |
| Black Country Landscapes Limited | Administrative & support | 2006 |
| Black Country Lettings Ltd | Real estate | 2023 |
| Black Country Make CIC | Other services | 2014 |
| Black Country Mortgages Ltd | Financial services | 2025 |
| Black Country Paints Limited | Manufacturing | 1993 |
| Black Country Partnership for Care C.I.C. | Other services | 2016 |
| Black Country Plumbing and GAS Ltd | Construction | 2026 |
| Black Country Reclamation Limited | Other services | 1992 |
| Black Country Solutions Limited | Professional & scientific | 2018 |
| Black Country Visual Arts CIC | Arts & recreation | 2014 |
| Black Diamond Printing Ltd | Manufacturing | 2025 |
| Black Family Heritage CIC | Education | 2026 |
| Black Kestrel Ltd | Professional & scientific | 2022 |