| B & P Consultants Ltd | Professional & scientific | 2023 |
| B & W (NW) Ltd | Administrative & support | 2016 |
| B D & S Maintenance Limited | Construction | 2015 |
| B G Clinical Solutions Ltd | Health & social care | 2024 |
| B J K Investments Limited | Extraterritorial | 2007 |
| B M Wirral Limited | Wholesale & retail | 2019 |
| B Williams Ltd | Construction | 2025 |
| B&C Catering Solutions Ltd | Hospitality | 2023 |
| B&J Locums Limited | Health & social care | 2024 |
| B. P. Engineering Co. (Wirral) Limited | Manufacturing | 1971 |
| B. T. U. Engineering Company Limited | Energy | 2003 |
| B.B.W Builds Ltd | Administrative & support | 2026 |
| B.S. Electrical (UK) Ltd | Other services | 2006 |
| B2C Sales Ltd | Wholesale & retail | 2018 |
| BA Domestic Surveying Ltd | Professional & scientific | 2024 |
| Babilicious Ltd | Hospitality | 2023 |
| Babitha Aesthetics Limited | Health & social care | 2025 |
| Babos Howsing Ltd | Real estate | 2025 |
| Baby Chic Boutique Ltd | Wholesale & retail | 2018 |
| Baby Wolf Productions Ltd | Information & communication | 2024 |
| Babyballet Chester & NW Ltd | Arts & recreation | 2023 |
| Babyballet Wirral Ltd | Arts & recreation | 2023 |
| Babylicious (1988) Ltd | Wholesale & retail | 2008 |
| Babylon Wirral Ltd | Hospitality | 2026 |
| BAC Power Limited | Construction | 2018 |
| Baca Engineering Ltd | Professional & scientific | 2021 |
| Bacchus Taverns Ltd | Hospitality | 2019 |
| Bachmann Properties Limited | Real estate | 2023 |
| BAD Moon Pubco Ltd | Hospitality | 2023 |
| Badminton Insight Ltd | Arts & recreation | 2021 |
| Baggers UK Limited | Transport & logistics | 2025 |
| Bagnall & Morris (Waste Services) Ltd | Water & waste | 1997 |
| Bailey and Cronin Limited | Professional & scientific | 2026 |
| Bailey and Staples Limited | Real estate | 2022 |
| Bait Ltd | Manufacturing | 2026 |
| Baker & Baker Products UK Limited | Manufacturing | 1980 |
| Baker & Doyle Properties Limited | Real estate | 2026 |
| Baker & Gunn Ltd | Professional & scientific | 2025 |
| Baker Development Group Ltd | Construction | 2022 |
| Baker Electrical Group Ltd | Manufacturing | 2018 |
| Baker Property Partners Limited | Real estate | 2020 |
| Bakewell & Horner Limited | Real estate | 2003 |
| Balance Living Limited | Other services | 2022 |
| Balazar Properties Ltd | Real estate | 2026 |
| Bale Consulting Ltd | Information & communication | 2026 |
| Ballymiscaw Ltd | Construction | 2024 |
| Balvay Lettings and Property Management Ltd | Real estate | 2019 |
| Bamboo Thai Limited | Hospitality | 2018 |
| Bangor Homes Ltd | Real estate | 2025 |
| Banks Contracting Limited | Administrative & support | 2026 |
| Banoffee Ltd | Professional & scientific | 2023 |
| Baran and Hull Limited | Health & social care | 2008 |
| Barber Eastham Ltd | Other services | 2026 |
| Barber&Co Ltd | Other services | 2025 |
| Barble Ltd | Real estate | 2024 |
| Barcanet Limited | Professional & scientific | 2015 |
| Barclays Antiques Limited | Wholesale & retail | 2025 |
| Barclays Development Corporation Ltd | Professional & scientific | 1996 |
| Barfection Limited | Hospitality | 2018 |
| Barker Design Management Limited | Construction | 1997 |
| Barker Surveying Ltd | Professional & scientific | 2008 |
| Barkers Motors Limited | Wholesale & retail | 2008 |
| Barkspark Media Ltd | Information & communication | 2025 |
| Barlow's Domestic & Maintenance Ltd | Construction | 2025 |
| Barnacre Property Investment Limited | Real estate | 2023 |
| Barnet Cuts Ltd | Other services | 2025 |
| Barnston Buddies Limited | Education | 2020 |
| Barnston Finance Limited | Financial services | 2014 |
| Barnstondale Centre | Hospitality | 2001 |
| Barrel Inn Ltd | Hospitality | 2026 |
| Barrington Caddick Properties Ltd | Real estate | 2023 |
| Barrington Rice Estates Ltd | Real estate | 2020 |
| Barrs Maritime Limited | Transport & logistics | 2019 |
| Barwen Consultancy Ltd | Construction | 2015 |
| Baskervyle Homes LLP | | 2008 |
| Basnet Property Investments Limited | Real estate | 2025 |
| Bathroom Centre Online Ltd | Wholesale & retail | 2022 |
| BAW Process Solutions Ltd | Professional & scientific | 2015 |
| BBBR3 Ltd | Construction | 2024 |
| BCA Properties & Estates Limited | Real estate | 2024 |
| BCL Instruments Limited | Professional & scientific | 2014 |
| BCS (NW) Limited | Wholesale & retail | 2019 |
| BCT Consultancy NW Ltd | Professional & scientific | 2020 |
| BD Developments Limited | Real estate | 2015 |
| BDS (Wirral) Ltd. | Real estate | 2002 |
| BE Ethical Training Ltd | Administrative & support | 2020 |
| Beach Bar Wirral Limited | Hospitality | 2022 |
| Beach House Management Company Limited | Households | 2016 |
| Beach Ventures Ltd | Administrative & support | 2019 |
| Beacon Group Holdings Limited | Extraterritorial | 2022 |
| Beacon Hub Limited | Extraterritorial | 2022 |
| Beacon Retail Limited | Extraterritorial | 2022 |
| Beacon Ridge Freeholders Limited | Households | 2023 |
| Beaconbms Limited | Administrative & support | 2021 |
| Beaconpic Limited | Real estate | 2022 |
| Bear and Frog Limited | Real estate | 2020 |
| Bear Joinery Ltd | Construction | 2019 |
| Bear Machinery Systems Ltd | Professional & scientific | 2023 |
| Beard Entertainment Limited | Information & communication | 2025 |
| Beardwood Bespoke Ltd | Manufacturing | 2022 |