| BC Landscape Contractors Ltd | Administrative & support | 2016 |
| BCH Traders Ltd | Wholesale & retail | 2020 |
| BCS Property Services Limited | Construction | 2016 |
| BD IT Limited | Information & communication | 2024 |
| BD Property Maintenance Limited | Construction | 2018 |
| BE on Time UK Limited | Transport & logistics | 2023 |
| Beacon Grove Ltd | Real estate | 2025 |
| Beaconsfield Court (Nuneaton) Limited | Other services | 1969 |
| Beare & Co Limited | Hospitality | 2023 |
| Beasley & Co (Warwickshire) Limited | Professional & scientific | 2023 |
| Beauchamp Court Limited | Households | 1981 |
| Beautiful Projects Warwickshire Ltd | Wholesale & retail | 2016 |
| Beautiful YOU (Nuneaton) Ltd | Other services | 2021 |
| Beautox Derma Limited | Health & social care | 2018 |
| Beauty Bean Ltd | Hospitality | 2019 |
| Beauty by RM Ltd | Construction | 2023 |
| Beauty for Success Ltd | Other services | 2025 |
| Beauty Solutions Consultancy Ltd | Information & communication | 2024 |
| Become a Landlord Ltd | Real estate | 2024 |
| Becze Tiberiu Limited | Transport & logistics | 2020 |
| Bedworth Rugby Club Ltd | Other services | 2024 |
| Bedworth, Rugby and Nuneaton Citizens Advice Bureau | Other services | 2004 |
| BEE Smart Repairs Ltd | Wholesale & retail | 2026 |
| Beegee Property Ltd | Real estate | 2020 |
| Being Human Marketing Ltd | Professional & scientific | 2024 |
| Bejach Ltd | Real estate | 2019 |
| Belfrey Limited | Professional & scientific | 2025 |
| BELINA82 Limited | Health & social care | 2021 |
| Bella Trans Ltd | Transport & logistics | 2022 |
| Belle Ventures Limited | Arts & recreation | 2023 |
| Bells Care Limited | Health & social care | 2025 |
| Bellz Limited | Manufacturing | 2020 |
| Belvoir Close Management Company Limited | Households | 2013 |
| Benchmark Mortgage & Finance Ltd. | Financial services | 2018 |
| Bencin Company Limited | Health & social care | 2018 |
| Bengeezee Entertainment Ltd | Administrative & support | 2024 |
| Benjamin Roofing Limited | Construction | 2020 |
| Bennar Ltd | Health & social care | 2009 |
| Berkeley Court (Stamford) Limited | Households | 1988 |
| Beryl Consulting Ltd | Health & social care | 2022 |
| Besc Ltd | Health & social care | 2019 |
| Bespoke Embroidery Limited | Extraterritorial | 2021 |
| Bespoke Panels Limited | Manufacturing | 2012 |
| Bestvolt Electrical Limited | Construction | 2026 |
| Bethany Property Management Limited | Health & social care | 2023 |
| Betta Care Concepts Limited | Administrative & support | 2026 |
| Bevankes Ltd | Wholesale & retail | 2025 |
| Beyond Beige Ltd | Other services | 2012 |
| Beyond Nutrition UK Ltd | Other services | 2021 |
| Beyond the Doors Training Limited | Education | 2026 |
| BF Sprayer Ltd | Extraterritorial | 2017 |
| Bfgh Limited | Financial services | 2023 |
| BFJ Events Limited | Construction | 2025 |
| Bgsdreamtrans Ltd | Transport & logistics | 2025 |
| BH Management Services Ltd | Professional & scientific | 2017 |
| BHR Pharmaceuticals Limited | Manufacturing | 1990 |
| Biddle Technical Solutions Ltd | Professional & scientific | 2024 |
| Big Chris TV Limited | Professional & scientific | 2015 |
| Big KN Trans Ltd | Construction | 2022 |
| BIGPAWS4THOUGHT Ltd | Professional & scientific | 2019 |
| Bijou Fragrances Limited | Manufacturing | 2024 |
| Billy Ltd | Transport & logistics | 2019 |
| Bimas Ltd | Transport & logistics | 2025 |
| Bingham Holdings Limited | Financial services | 2025 |
| BIO Tech Eden Ltd | Professional & scientific | 2024 |
| Bioptim Ltd | Transport & logistics | 2022 |
| Birchfield Couriers Ltd | Transport & logistics | 2026 |
| Birds Precision Engineering Limited | Manufacturing | 2002 |
| Birmingham Property Services Ltd | Other services | 2018 |
| Bita Pathways Limited | Administrative & support | 2025 |
| Bito Storage Systems Limited | Wholesale & retail | 1999 |
| Bivol Facade Ltd | Construction | 2026 |
| Biznes Cafe Ltd | Information & communication | 2021 |
| BJ CAB Ltd | Transport & logistics | 2024 |
| Bkmj Property Limited | Real estate | 2017 |
| Black and White Drilling Limited | Wholesale & retail | 1967 |
| Black Rose Engineering Limited | Professional & scientific | 2024 |
| Blacksmiths Yard Management Company Limited | Extraterritorial | 2005 |
| Blanford Limited | Professional & scientific | 1992 |
| Blevin Limited | Financial services | 2006 |
| Blinds in Glass Group Ltd | Wholesale & retail | 2018 |
| Blinds in Glass Limited | Extraterritorial | 2020 |
| Bliss IT Solutions Limited | Information & communication | 2010 |
| Bliss Kids Academy Ltd | Arts & recreation | 2019 |
| Bliss Shipping Solutions Limited | Transport & logistics | 2019 |
| Blizzard Motor Cars Ltd | Manufacturing | 2017 |
| Bloc Groundworks Ltd | Construction | 2008 |
| Blood Tests at Home Ltd | Health & social care | 2024 |
| Blossom in the Beans Limited | Hospitality | 2024 |
| Blue Bella Projects Ltd | Construction | 2020 |
| Blue Build Property Limited | Construction | 2023 |
| Blue Lion Talent Limited | Information & communication | 2020 |
| Blue Ridge Films Ltd. | Information & communication | 2012 |
| Blue Shop 1 Ltd | Wholesale & retail | 2026 |
| Blue Springs Social Care Ltd | Hospitality | 2021 |
| Blue Tower Projects Limited | Construction | 2024 |
| Bluejay Planning Limited | Professional & scientific | 2020 |
| Bluesky Direct (GB) Limited | Wholesale & retail | 2004 |
| Bluesky Projects and Design Ltd | Administrative & support | 2014 |
| Bluespacecoaching Limited | Professional & scientific | 2015 |