| Bishopsgate Land Developments Ltd | Real estate | 2016 |
| Bishopsgate One Limited | Real estate | 2018 |
| Bishopsgate Project Management Limited | Real estate | 2013 |
| Bishopsgate Property Management Limited | Real estate | 2009 |
| BJD Properties (Willenhall) LLP | | 2021 |
| Black Country Services Ltd | Construction | 2023 |
| Black Lodge Furniture Ltd | Manufacturing | 2025 |
| Black Lodge Potions Ltd | Manufacturing | 2019 |
| Blackbridge Ventures Ltd | Wholesale & retail | 2026 |
| Blackroot Civil Ltd | Construction | 2022 |
| Blair Contractors Limited | Construction | 2023 |
| Blakemore Creative Ltd. | Professional & scientific | 1965 |
| Blakemore Fine Foods Limited | Wholesale & retail | 2007 |
| Blakemore Property Ltd | Construction | 1978 |
| Blakemore Retail Ltd | Wholesale & retail | 1918 |
| Blakemore Trade Partners Limited | Professional & scientific | 1992 |
| Blakemore Wholesale Ltd | Professional & scientific | 1981 |
| Blakenall Sporting Club Limited | Arts & recreation | 1989 |
| Blessed Central Limited | Information & communication | 2012 |
| Bloom Psychiatry Limited | Health & social care | 2025 |
| Bloor Mill Management Company Limited | Households | 2004 |
| Blossom & Go Ltd | Health & social care | 2025 |
| Bloxwich Environmental Services Limited | Construction | 2004 |
| Bloxwich Rotary Library Service CIC | Arts & recreation | 2019 |
| Blue Kite Children Care Limited | Health & social care | 2022 |
| Blue Phoenix Haulage Ltd | Transport & logistics | 2020 |
| Bluebells and Butterflies Crafts Limited | Manufacturing | 2021 |
| Bluestone Consultancy Limited | Professional & scientific | 2023 |
| BMI Transport Ltd | Transport & logistics | 2019 |
| Bmwillenhall Limited | Wholesale & retail | 2018 |
| BNB Courrier Ltd | Transport & logistics | 2025 |
| Bnks Investments Ltd | Real estate | 2024 |
| Bnnb Ltd | Administrative & support | 2025 |
| Bodam Limited | Professional & scientific | 2023 |
| Body Perfection Laser Clinic Limited | Health & social care | 2016 |
| Body Perfection Weight Loss Limited | Health & social care | 2018 |
| Bolaj Cleaning Services Ltd | Administrative & support | 2024 |
| Bolavid Ltd | Information & communication | 2021 |
| Bomfy Trans Limited | Transport & logistics | 2020 |
| Boswells Property Services Ltd | Real estate | 2024 |
| Bouverie Road (AGG5) Ltd | Real estate | 2013 |
| Bowmech Ltd | Manufacturing | 2025 |
| Bownik-Trans Ltd | Transport & logistics | 2019 |
| Box Buddies Couriers Ltd | Transport & logistics | 2025 |
| BPS Homes Limited | Real estate | 2022 |
| Brambles Property Services Ltd | Administrative & support | 2003 |
| Brand UP Boss CIC | Professional & scientific | 2023 |
| Brar Carpet & Flooring Ltd | Wholesale & retail | 2021 |
| Brar Roofing Services Limited | Construction | 2025 |
| Bratu Solutions Ltd | Construction | 2024 |
| Brave Lion Ventures Limited | Information & communication | 2026 |
| Breakfast at Tiffany’S Ltd | Hospitality | 2023 |
| Bredgeuk Ltd | Information & communication | 2025 |
| Brepo Ltd | Health & social care | 2019 |
| Brett Edwards Enterprises Limited | Hospitality | 2017 |
| Brett Quinton Funeral Directors Ltd | Other services | 2000 |
| Bridge Carpentry Limited | Manufacturing | 2006 |
| Bristol Gear Company Limited | Manufacturing | 1996 |
| Brivva Ltd | Administrative & support | 2025 |
| BRM Removals Limited | Transport & logistics | 2025 |
| Brookdale Investments Limited | Real estate | 2020 |
| Brookland Construction Developments Limited | Construction | 2005 |
| Brooklands Midlands Limited | Manufacturing | 2021 |
| Brookson (5441H) Limited | Administrative & support | 2007 |
| Brookson (5463D) Limited | Transport & logistics | 2007 |
| Bros Transport Limited | Transport & logistics | 2025 |
| Brownhills One Limited | Real estate | 2017 |
| Brownshore Developments Limited | Real estate | 2003 |
| Brownshore Motors Limited | Wholesale & retail | 2003 |
| Brush Junkie Limited | Wholesale & retail | 2019 |
| BS Investors Ltd | Real estate | 2026 |
| Bsccouriers Ltd | Transport & logistics | 2023 |
| BSJ Construction and Civil Engineering Ltd | Construction | 2019 |
| BSL@ Ltd | Administrative & support | 2017 |
| BSM Contracting Ltd | Construction | 2018 |
| BTS Tnft Ltd | Wholesale & retail | 2021 |
| Bubble Valeting Centre Ltd | Administrative & support | 2025 |
| Bucknall Management Services Limited | Administrative & support | 2015 |
| Budget Builder Suppliers Limited | Wholesale & retail | 2015 |
| Bullamacook Limited | Professional & scientific | 2024 |
| Bullamasay XL Limited | Professional & scientific | 2019 |
| Bullamasay XXL Limited | Professional & scientific | 2019 |
| Bullamasplash Limited | Financial services | 2026 |
| Bullamaswim Limited | Professional & scientific | 2026 |
| Bushell Investment Group - Business Services Limited | Administrative & support | 2011 |
| Bushell Investment Group Limited | Professional & scientific | 2020 |
| Business Solutions (West Mids) Ltd | Professional & scientific | 2024 |
| Butlers Public House Limited | Hospitality | 2014 |
| BVN Autos Limited | Wholesale & retail | 2025 |
| Byma Accounting & Tax Limited | Professional & scientific | 2021 |
| Bytann Legal Ltd | Professional & scientific | 2025 |
| Bytestrype Limited | Information & communication | 2017 |
| C & J Property Maintenance UK Ltd | Real estate | 2024 |
| C a Care Ltd | Education | 2026 |
| C Benfield Limited | Transport & logistics | 2013 |
| C F Birch Limited | Construction | 2017 |
| C J Roofing & Cladding Ltd | Construction | 2020 |
| C S Mills Contractors (UK) Limited | Transport & logistics | 2001 |
| C&D Operation Ltd | Construction | 2023 |
| C&K Property and Letting Ltd | Real estate | 2026 |