| Bake My Day (Take-Out) Limited | Hospitality | 2023 |
| Bake My Day Upton Ltd | Hospitality | 2021 |
| Balance 555 C.I.C. | Education | 2025 |
| Balance Accountancy Services Limited | Professional & scientific | 2005 |
| Baller Clothing London Ltd | Wholesale & retail | 2013 |
| Bamboo Bites Limited | Hospitality | 2024 |
| Bandman Records Ltd | Wholesale & retail | 2020 |
| Barbersmiths Notting Hill Limited | Other services | 2025 |
| Bark's Group Limited | Financial services | 2021 |
| Bark's Investments Ltd | Financial services | 2021 |
| Barry's Northwest JET Washing Limited | Administrative & support | 2019 |
| Baskerville E-Media Limited | Information & communication | 2021 |
| Bassboots.Co.Uk Limited | Wholesale & retail | 2010 |
| Bayswater Court Management (Wallasey) Limited | Households | 2017 |
| Bayview (Wallasey) Management Company Limited | Households | 2015 |
| BBM Bargain Discount Limited | Wholesale & retail | 2024 |
| BBM Bargain Discount Liscard Limited | Wholesale & retail | 2026 |
| BBM Bargain Pool Street Limited | Wholesale & retail | 2025 |
| BBM Bargain Wallasey Ltd | Wholesale & retail | 2023 |
| BCJ Landscapes Ltd | Administrative & support | 2017 |
| Bcjj Landscapes Limited | Administrative & support | 2024 |
| BD Golf Ltd | Wholesale & retail | 2016 |
| BD Properties (NW) Ltd | Real estate | 2019 |
| BD Trading (UK) Ltd | Extraterritorial | 2020 |
| Bdm&C Ltd | Professional & scientific | 2011 |
| Bdpl Property Ltd | Real estate | 2025 |
| Bealach Eile Ltd | Professional & scientific | 2024 |
| Bebington Hall Park Limited | Households | 1983 |
| BEC Cash Registers & Supplies Ltd | Wholesale & retail | 2014 |
| Bec's Bar & Bistro Ltd | Hospitality | 2021 |
| Bee-You Well-Being Ltd | Other services | 2022 |
| Beehive (Wilson) Limited | Construction | 2013 |
| Bell Contractors Ltd | Construction | 2009 |
| Bell Mobility Limited | Wholesale & retail | 2010 |
| Bell Mobility NW Ltd | Construction | 2013 |
| Bella Pizza & Doners Ltd | Hospitality | 2020 |
| Bella Pizza Wallasey Ltd | Hospitality | 2025 |
| Belle Voci Limited | Arts & recreation | 2017 |
| Belly RUB Club Dog Grooming Ltd | Other services | 2026 |
| Belvidere Developments Limited | Construction | 2023 |
| Belvidere Nursing Home Limited | Health & social care | 1994 |
| Bendrey Properties Ltd | Real estate | 2026 |
| Bengineering Ltd | Professional & scientific | 2025 |
| Bennett Builders (North West) Ltd | Construction | 2011 |
| Bennhatt Ltd | Information & communication | 2014 |
| Berber Asset Acquisitions & Disposals Ltd | Real estate | 2024 |
| Beresford Apartments Management Company Limited | Other services | 2010 |
| Bernoulli Homes Limited | Real estate | 2018 |
| BERYLS1 Limited | Hospitality | 2013 |
| Bestraa Ltd | Construction | 2025 |
| Bethrens Ltd | Administrative & support | 2021 |
| Betty & Mojo Ltd | Wholesale & retail | 2020 |
| BFS Home Loans Limited | Financial services | 2011 |
| BHL Engineering Ltd | Professional & scientific | 2021 |
| Biffen Brothers Limited | Wholesale & retail | 2020 |
| Big Girl Properties Ltd | Real estate | 2024 |
| Birdcage Stage C.I.C. | Arts & recreation | 2021 |
| Birkenhead Blinds Ltd | Other services | 2025 |
| Bishops Court (Oxton) Management Company Limited | Households | 2002 |
| Black Heart Training Academy Limited | Education | 2022 |
| BLACK7 Ltd | Hospitality | 2024 |
| Blackstone Electrical & Homecare Ltd | Construction | 2020 |
| Blackstone Estate Agents Ltd | Real estate | 2009 |
| Blackwood Keep Ltd | Professional & scientific | 2025 |
| Blackwood Stoves and Fires Ltd | Wholesale & retail | 2016 |
| Blank Page Club CIC | Education | 2026 |
| Blessoms Limited | Wholesale & retail | 2020 |
| Blooming Mind Ltd | Education | 2022 |
| BLU Retail Ltd | Manufacturing | 2021 |
| BLU Scott Holdings Ltd | Households | 2021 |
| Blue DOT Property Group Ltd | Construction | 2023 |
| Blueberi Holdings Ltd | Information & communication | 2020 |
| Bluebird Support Services Limited | Administrative & support | 2016 |
| Blurred Lines Clothing UK Ltd | Wholesale & retail | 2025 |
| BN Beauty Peacehaven Limited | Other services | 2025 |
| BOA Vista Associates Limited | Extraterritorial | 2015 |
| Boddy Language Ltd | Other services | 2012 |
| Boets Biltong Limited | Wholesale & retail | 2021 |
| Boho Brunching Ltd | Hospitality | 2025 |
| Boilerfit Ltd | Construction | 2017 |
| Booby Trapp Limited | Wholesale & retail | 2006 |
| Boogie Woogie, Music, Movement & Memories Ltd | Arts & recreation | 2023 |
| Boss Birches CIC | Education | 2021 |
| Boult Utilities Ltd | Professional & scientific | 2017 |
| Bounce Back Events Limited | Arts & recreation | 2020 |
| Boyd Industrial Group Limited | Administrative & support | 2020 |
| Boyd MOT ORS Ltd | Wholesale & retail | 2025 |
| Bradlayne Property Ltd | Real estate | 2018 |
| Brand Designs Homeware Ltd | Wholesale & retail | 2021 |
| BRE Storage Co Ltd | Transport & logistics | 2026 |
| Break the Mould Organisation C.I.C. | Education | 2019 |
| Breakers Sports Bar Ltd | Hospitality | 2026 |
| Brearsmith Limited | Manufacturing | 2011 |
| Breck Road Car Wash Wallasey Ltd | Administrative & support | 2024 |
| Brick Finance Limited | Administrative & support | 2008 |
| Bridging Finance (Midlands) Ltd | Financial services | 2010 |
| Bridging Finance (S East) Ltd | Financial services | 2010 |
| Bridging Finance (SW) Ltd | Financial services | 2010 |
| Bridging Finance (West) Ltd | Financial services | 2010 |
| Bridging Finance Solutions Group Limited | Administrative & support | 2006 |