| Baccata Property Holdings Ltd | Real estate | 2016 |
| Bache Estates Ltd | Real estate | 2024 |
| Bachra Ltd | Wholesale & retail | 2012 |
| Baddiley Properties Limited | Real estate | 2017 |
| Bakers Cabinets Limited | Manufacturing | 2018 |
| Baldwins Collaboration Limited | Professional & scientific | 2020 |
| Ball Technology Ltd | Information & communication | 2022 |
| Bandon Commercial Services Limited | Extraterritorial | 2023 |
| Bankcliffe Limited | Other services | 2003 |
| Bar SIX Nantwich Limited | Hospitality | 2020 |
| Barber & Salon Supplies Ltd | Wholesale & retail | 2017 |
| Barbridge Management Company Limited | Water & waste | 2000 |
| Bargain Basement Clothes UK Limited | Wholesale & retail | 2025 |
| Barramundi Properties Ltd | Real estate | 2025 |
| Barrows Estates Limited | Real estate | 2018 |
| Barton Orthopaedics Ltd | Health & social care | 2012 |
| Bate Property Limited | Professional & scientific | 2013 |
| Batherton Healthcare Limited | Wholesale & retail | 2016 |
| Batherton Holdings Ltd | Financial services | 2026 |
| Batherton Services Limited | Professional & scientific | 2013 |
| Bay Productions Bidco Limited | Professional & scientific | 2026 |
| Bay Productions Midco Limited | Professional & scientific | 2026 |
| Bay Productions Topco Limited | Professional & scientific | 2026 |
| BC Boat Management Ltd | Professional & scientific | 2008 |
| BC Home Improvements Limited | Construction | 2024 |
| BC Media Group Limited | Information & communication | 2025 |
| BCS Events Limited | Administrative & support | 2025 |
| BDB (NW) Ltd | Construction | 2009 |
| BE Well, Stay Well C.I.C. | Other services | 2021 |
| Bear's Business Ltd | Information & communication | 2025 |
| Beardmore Accountants Limited | Professional & scientific | 2018 |
| Beardmore Travel Services Ltd | Transport & logistics | 2012 |
| Beardsmith Ltd | Arts & recreation | 2020 |
| Beautiful Nails Body & Soul Ltd | Other services | 2014 |
| Beavan Webb Accountants Ltd | Professional & scientific | 2024 |
| Beckett's of Cheshire Limited | Wholesale & retail | 2016 |
| Beechwood Tree Consultancy Ltd | Agriculture & fishing | 2020 |
| Beehive Educational and Child Psychology Service Ltd | Education | 2020 |
| Beesleys Services Ltd | Manufacturing | 2023 |
| Belle Reverie Ltd | Wholesale & retail | 2025 |
| Belle Vous Limited | Wholesale & retail | 2008 |
| Belong at Home Limited | Professional & scientific | 2009 |
| Belong Villages Limited | Professional & scientific | 2009 |
| BEN Pritchard Ltd | Professional & scientific | 2020 |
| Benjamin Kyle Ltd | Administrative & support | 2024 |
| Bennett Heating NW Limited | Construction | 2002 |
| Bennion Heritage Limited | Construction | 2017 |
| Bennion Investments Limited | Financial services | 2026 |
| Bentley Solicitors Limited | Professional & scientific | 2010 |
| Berries Wrenbury Limited | Hospitality | 2024 |
| Berrisford Holdings Ltd | Financial services | 2023 |
| Bespoke Communications UK Limited | Information & communication | 2007 |
| Bespoke Floating Homes Ltd | Manufacturing | 2023 |
| Best Health Food Shop Ltd | Wholesale & retail | 2020 |
| Best of Breed Livestock Limited | Wholesale & retail | 2018 |
| Bethell Contracting Ltd | Construction | 2010 |
| Betterchoice Driveways and Landscapes Ltd | Administrative & support | 2025 |
| Beva Transport Limited | Extraterritorial | 2014 |
| Bevanda Solutions Limited | Wholesale & retail | 2015 |
| Beyond Basic Learning (Shavington) Ltd | Administrative & support | 2015 |
| Beyond Basic Learning Limited | Administrative & support | 2007 |
| Beyond Canvas Ltd | Wholesale & retail | 2024 |
| Bickerton Building Ltd | Other services | 2025 |
| Big Push Sports Ltd | Professional & scientific | 2019 |
| Bioenergy Parts Co. Limited | Wholesale & retail | 2025 |
| Biomethane Assist Limited | Professional & scientific | 2015 |
| Biophotonic Limited | Wholesale & retail | 2024 |
| Birchwood Developments and Building Contractors Limited | Construction | 2014 |
| Biscontact Limited | Administrative & support | 2022 |
| Bishops Manor Residents Company Limited | Households | 2001 |
| BIZ Group Limited | Professional & scientific | 2018 |
| Bjer Consultancy Limited | Professional & scientific | 2013 |
| BK Groundworks Ltd | Construction | 2023 |
| BK Print Co Ltd | Manufacturing | 2026 |
| Black & White (Northwest) Management Limited | Real estate | 2012 |
| Black Cat Collective Ltd | Education | 2021 |
| Black Events Global Ltd | Arts & recreation | 2026 |
| Black Jaguar Investments Limited | Real estate | 2017 |
| Black PAW Property Limited | Households | 2022 |
| Black Phoenix Enterprise Ltd | Real estate | 2021 |
| Blackcraig Plumbing & Heating Limited | Construction | 2013 |
| Blackhurst & Blackhurst Limited | Real estate | 2023 |
| Blacklands Trading Limited | Manufacturing | 1993 |
| Blakelow Estates Limited | Real estate | 2011 |
| Blakelow Building Services Limited | Construction | 2013 |
| Blakelow Holdings Limited | Real estate | 2019 |
| Blaspsoft Ltd | Information & communication | 2022 |
| Blind Taste Ltd | Wholesale & retail | 2020 |
| Block's Concrete Group Ltd | Financial services | 2020 |
| Blok (UK) Limited | Construction | 2013 |
| BLU Frog Ltd | Professional & scientific | 2025 |
| BLU Scents UK Ltd | Wholesale & retail | 2020 |
| Blue Sky Consultancy Services Limited | Information & communication | 2025 |
| Blue Squircle Group Ltd | Wholesale & retail | 2023 |
| Blue Star UK Holdings Limited | Administrative & support | 2019 |
| BOB on Building Ltd | Administrative & support | 2024 |
| BOD Solutions Ltd | Information & communication | 2007 |
| Boksen Limited | Arts & recreation | 2025 |
| Bolen Properties Ltd | Hospitality | 2026 |
| Boot Consulting Limited | Information & communication | 2016 |