| Beyond Distribution Limited | Wholesale & retail | 2023 |
| Beyond Import and Export Limited | Wholesale & retail | 2025 |
| BF Motorsport Ltd | Arts & recreation | 2025 |
| BGS Drivers Ltd | Transport & logistics | 2016 |
| BH Finance Ltd | Financial services | 2019 |
| Bhattarai and Sons Limited | Hospitality | 2018 |
| BHF Holdings Limited | Financial services | 2019 |
| BHR Online Limited | Information & communication | 2018 |
| Bibabo Limited | Wholesale & retail | 2022 |
| Bibi's Table Ltd | Hospitality | 2025 |
| Biboann Lerry Ltd | Wholesale & retail | 2025 |
| Bickford Developments Limited | Construction | 2021 |
| Bickford Digger and Plant Hire Limited | Administrative & support | 2025 |
| Bickford Investment Limited | Real estate | 2018 |
| Biedronka Stafford Ltd | Wholesale & retail | 2019 |
| Big Top Group Limited | Arts & recreation | 2018 |
| Big Wheel International Co., Ltd | Extraterritorial | 2019 |
| Bigger Picture Support Services Limited | Education | 2016 |
| Bilafi Limited | Information & communication | 2021 |
| Billington Repairs Limited | Manufacturing | 2020 |
| BIN Diash International Trading Co., Limited | Wholesale & retail | 2024 |
| BIN Gamil Trading Co., Ltd | Wholesale & retail | 2023 |
| Bingham Pluckers Limited | Administrative & support | 2018 |
| Biomaster Limited | Extraterritorial | 2003 |
| Biomaterials Consulting Limited | Professional & scientific | 2020 |
| Biome Agency Limited | Information & communication | 2026 |
| Birch 'N' Blooms Ltd | Education | 2025 |
| Birch House Lane Industrial Estate Ltd | Real estate | 2017 |
| Birch ROW Limited | Professional & scientific | 2023 |
| Birchendel Holdings Limited | Financial services | 2016 |
| Birchwood Tree Services Ltd | Other services | 2023 |
| Birds Online Limited | Financial services | 2022 |
| Birkhead Cottages Management Limited | Real estate | 2014 |
| Birmingham Car Warehouse Limited | Wholesale & retail | 2013 |
| Bishop's Court (Developments) Co Limited | Real estate | 2016 |
| Bishops Mews (Eccleshall) Management Company Limited | Real estate | 1993 |
| Bishton Farm Pools Limited | Agriculture & fishing | 2018 |
| Bison Machinery Holdings Ltd | Financial services | 2024 |
| Bissell Estates Ltd | Real estate | 2025 |
| BIT2SYS Limited | Information & communication | 2010 |
| Bitfrog Technology Solutions Limited | Information & communication | 2026 |
| Bitsharp Ltd | Information & communication | 2017 |
| Bitstar Technology Ltd | Wholesale & retail | 2021 |
| Bittaotao. Ltd | Wholesale & retail | 2021 |
| Biuestar Limited | Wholesale & retail | 2025 |
| BK Utilities Ltd | Construction | 2024 |
| BKJ Investments Limited | Real estate | 2017 |
| Black and White Equation Capital, Ltd. | Extraterritorial | 2021 |
| Black Code International Limited | Extraterritorial | 2011 |
| Black Dog Biogas Limited | Energy | 2013 |
| Black Kitchens Ltd | Hospitality | 2019 |
| Blackcrow Contracts Ltd | Construction | 2019 |
| Blacktech Limited | Information & communication | 1998 |
| Blackwell & Co Residential Ltd | Construction | 2025 |
| Blake Developments (Midlands) Ltd | Real estate | 1987 |
| Blakemore AG Services Limited | Wholesale & retail | 2026 |
| Blandford Property Management Services Ltd | Households | 2026 |
| Blaze FX Ltd | Construction | 2025 |
| Blaze Management Services Ltd | Administrative & support | 2024 |
| Blend Full Stop Limited | Hospitality | 2025 |
| Blended Barbers Ltd | Other services | 2025 |
| Blindbudda Limited | Wholesale & retail | 2013 |
| Blissful Moments Trading Limited | Wholesale & retail | 2025 |
| Blithbury Data Management Limited | Administrative & support | 2005 |
| Bliuiao Ltd | Wholesale & retail | 2025 |
| BLN Safety & Compliance Ltd | Public administration | 2026 |
| Bloom and Bliss Ltd | Wholesale & retail | 2025 |
| Bloom Healthcare Solutions Ltd | Health & social care | 2025 |
| Bloomchem International Trading Co., Limited | Extraterritorial | 2014 |
| Blue Cable Bloodstock Ltd | Agriculture & fishing | 2025 |
| Blue Cable Limited | Information & communication | 2005 |
| Blue Dial Consultancy Limited | Professional & scientific | 2019 |
| Blue Marine Union Co., Ltd | Wholesale & retail | 2023 |
| Blue Rock Catering Limited | Hospitality | 2003 |
| Blue Rock Retail Limited | Wholesale & retail | 2021 |
| Blue Rose Trading Limited | Wholesale & retail | 2025 |
| Blue Sky Estimating Ltd | Professional & scientific | 2021 |
| Bluebest International Ltd | Extraterritorial | 2016 |
| Blueline (Midlands) Limited | Financial services | 2024 |
| Blueplex Asset Management Limited | Information & communication | 2011 |
| Blueplex Ltd | Information & communication | 2007 |
| Blueprint Boost Ltd | Professional & scientific | 2024 |
| Bluetide International Ltd | Wholesale & retail | 2025 |
| Bluewave Supply Solutions Limited | Wholesale & retail | 2025 |
| Blythe Depot Limited | Transport & logistics | 2024 |
| BM Conversions UK Limited | Wholesale & retail | 2015 |
| BM Motor Repairs Staffs Ltd | Wholesale & retail | 2025 |
| BM Permanent Beauty Limited | Other services | 2016 |
| BMA Compassionate Healthcare (Staffordshire) Ltd | Health & social care | 2025 |
| Bmas Trading Co., Ltd | Wholesale & retail | 2024 |
| Bmaster Diesel Ltd | Wholesale & retail | 2025 |
| BMK Logistics Limited | Transport & logistics | 2025 |
| Bmkc Limited | Construction | 2022 |
| Bmma Staffordshire Limited | Education | 2020 |
| BMV Distribution Limited | Wholesale & retail | 2014 |
| BOB Costello Associates Limited | Professional & scientific | 1994 |
| Bodmin Property Management Limited | Real estate | 2003 |
| Bodygenix Ltd | Wholesale & retail | 2017 |
| Bofeng Logistics Co., Ltd. | Transport & logistics | 2025 |
| Bohai Valve Group Co., Ltd | Extraterritorial | 2019 |