| Benjamin Kane Limited | Real estate | 2021 |
| Bennett Whitehouse Group Limited | Professional & scientific | 2019 |
| Bennett Whitehouse Limited | Professional & scientific | 2004 |
| Bennett Whitehouse Service Charge Limited | Professional & scientific | 2021 |
| Bentley Road Engineering Limited | Administrative & support | 2021 |
| Benztec Limited | Wholesale & retail | 2014 |
| Beracah Works Limited | Construction | 2025 |
| Bespoke Pet and Garden Supplies Ltd | Wholesale & retail | 2018 |
| Bespoke Welding Ltd | Manufacturing | 2019 |
| Best Day (Brierley Hill) Ltd | Wholesale & retail | 2019 |
| Best Experience Limited | Hospitality | 2012 |
| Betol Machinery Limited | Manufacturing | 1998 |
| Betony Limited | Construction | 2004 |
| Bewdley Gate Management Limited | Real estate | 2006 |
| BG53 Properties Ltd | Real estate | 2024 |
| Bhamra Commercial Consultancy Ltd | Administrative & support | 2022 |
| Bidpro Solutions Limited | Administrative & support | 2016 |
| Big Smoke Grill Ltd | Hospitality | 2022 |
| Big Willie 180 Limited | Arts & recreation | 2021 |
| Billingham Biomass Limited | Manufacturing | 2018 |
| Binary Convergence Ltd | Information & communication | 2019 |
| Biogas Products Limited | Manufacturing | 2008 |
| Birmingham Mint International Limited | Professional & scientific | 2003 |
| BJ Group Ltd | Wholesale & retail | 2025 |
| BK and Sons Properties Limited | Real estate | 2022 |
| Bkre Homes Limited | Real estate | 2025 |
| BKS Plumbing and Fitting Services Limited | Construction | 2010 |
| BL50 Properties Ltd | Real estate | 2024 |
| Black Country Fencing Ltd | Construction | 2019 |
| Black Country Furniture Repairs and Reupholstery Limited | Other services | 2022 |
| Black Country GAS Ltd | Construction | 2023 |
| Black Country Hampers Limited | Wholesale & retail | 2015 |
| Black Country Inns Limited | Hospitality | 2004 |
| Black Country Safety Inspections Ltd | Administrative & support | 2021 |
| Black Horse Grill House Limited | Hospitality | 2022 |
| Blackbrook Estates Limited | Construction | 1988 |
| Blackcountry Horses Ltd | Agriculture & fishing | 2023 |
| Blackthorns 60 Limited | Professional & scientific | 2010 |
| Blackthorns 61 Limited | Financial services | 2012 |
| Blackthorns 62 Limited | Extraterritorial | 2017 |
| Blackthorns House Group Limited | Professional & scientific | 2017 |
| Blackthorns House Limited | Professional & scientific | 2010 |
| Blair Holding Company Ltd | Financial services | 2010 |
| Blair Metals Limited | Wholesale & retail | 2005 |
| Blake Construction Ltd | Construction | 2018 |
| Blake Evans Upholstery Ltd | Manufacturing | 2026 |
| Blanket Travel Ltd | Administrative & support | 2023 |
| Bleas Limited | Real estate | 2022 |
| Blewitt Ltd | Wholesale & retail | 2026 |
| Blithfield Safety Training Limited | Administrative & support | 2003 |
| BLJ Cars Limited | Wholesale & retail | 2014 |
| Blocryx Ltd | Wholesale & retail | 2025 |
| BLS Consultancy Limited | Professional & scientific | 2025 |
| Blue Flame Cooker Ltd | Wholesale & retail | 2024 |
| Blue Sky Catering Services Limited | Hospitality | 2018 |
| Blue Sky Commercial Limited | Administrative & support | 2003 |
| Blueclays Digital Marketing Ltd | Information & communication | 2024 |
| Blueline Service Centre Limited | Wholesale & retail | 2024 |
| Bluestream 786 Limited | Wholesale & retail | 2025 |
| Blusafe Solutions UK Ltd | Wholesale & retail | 2020 |
| Blush Touch the Brow Edit Ltd | Other services | 2026 |
| BMA Express Limited | Professional & scientific | 2012 |
| BMA Motor Hub Ltd | Wholesale & retail | 2020 |
| BMA Motor Sales Ltd | Wholesale & retail | 2023 |
| Bmbc Holdings Ltd | Construction | 2016 |
| BMC Mini Club Limited | Other services | 2026 |
| BMD Properties Limited | Real estate | 2019 |
| BNR Jewellery Limited | Manufacturing | 2021 |
| Boing Software Limited | Information & communication | 2021 |
| Bonnert Acoustics Limited | Professional & scientific | 2026 |
| Boonen Property Ltd | Real estate | 2024 |
| Bostin Sweets Ltd | Wholesale & retail | 2026 |
| Bostin’ Hardware Ltd | Wholesale & retail | 2021 |
| Boswell Holdings Limited | Wholesale & retail | 1963 |
| Boswell ROD and Wire Limited | Manufacturing | 1984 |
| Boutique House Ltd | Real estate | 2024 |
| Bovdn Services Ltd | Construction | 2025 |
| Bowley Holdings Limited | Financial services | 2023 |
| Boxin Ltd | Wholesale & retail | 2022 |
| Boyd Perry Limited | Professional & scientific | 2009 |
| BP Electrical Solutions Limited | Construction | 2019 |
| BP Fasteners Ltd | Wholesale & retail | 2021 |
| BPB Automotive Ltd | Wholesale & retail | 2026 |
| Bradley Holdings 24 Limited | Real estate | 2024 |
| Bradleys Property Lettings Ltd | Real estate | 2023 |
| Brand Collective Limited | Manufacturing | 2023 |
| Brandon Jones London LLP | | 2025 |
| Breakwell Enterprises Limited | Administrative & support | 2013 |
| Breakwell Testing Limited | Wholesale & retail | 2013 |
| Breckin Limited | Real estate | 2025 |
| Bridge House Narrowboat Ltd | Hospitality | 2023 |
| Bridge's Bargains Ltd | Wholesale & retail | 2022 |
| Bridgnorth Bikers Limited | Extraterritorial | 2014 |
| Brierley Food & Wine Ltd | Wholesale & retail | 2013 |
| Brierley Food Warehouse Ltd | Hospitality | 2025 |
| Brierley Foods Ltd | Hospitality | 2023 |
| Brierley Hill Afro-Caribbean Ltd | Wholesale & retail | 2026 |
| Brierley Hill Butchers Ltd | Wholesale & retail | 2024 |
| Brierley Hill Cafe Ltd | Hospitality | 2024 |
| Brierley Hill Clutch & Gear Box Centre Box Centre Limited | Wholesale & retail | 2025 |