| Broadbeans Services Ltd | Professional & scientific | 2021 |
| Broadcast Graphics and Control Limited | Information & communication | 2007 |
| Broaden & Build Psychology Limited | Education | 2020 |
| Broadleaf Chambers Management Company Limited | Households | 2022 |
| Broadway Catering Heswall Ltd | Hospitality | 2026 |
| Broadway Drinks Heswall Ltd | Wholesale & retail | 2025 |
| Broadway Meat House Ltd | Hospitality | 2024 |
| Broadway Steak Heswall Ltd | Real estate | 2024 |
| Broadway Steak&Wine Ltd | Hospitality | 2026 |
| Brocklebank Preservation Society Limited | Education | 1986 |
| Brocks Training Centre of Excellence Ltd | Administrative & support | 2010 |
| Brockwitz Bespoke Ltd | Manufacturing | 2024 |
| Brogan Property Ltd | Real estate | 2025 |
| Brogden Builders & Maintenance Limited | Construction | 2025 |
| Bromborough Barber Shop Limited | Other services | 2008 |
| Bromborough Cafe Ltd | Hospitality | 2026 |
| Bromborough Flowers Ltd | Wholesale & retail | 2019 |
| Bromborough Gloves Limited | Education | 2024 |
| Bromborough Village Car Wash Ltd | Extraterritorial | 2019 |
| Bromilow Architects Ltd | Administrative & support | 2007 |
| Brooks Design Associates | | 2005 |
| Brooktherm Holdings Limited | Administrative & support | 2009 |
| Brooktherm Refrigeration Limited | Manufacturing | 1989 |
| Brow Bar JP Limited | Other services | 2018 |
| Browbar Franchise Ltd | Administrative & support | 2024 |
| Brown Bread (UK) Ltd | Manufacturing | 2004 |
| Brown UK Trading Limited | Wholesale & retail | 2026 |
| Brown's CBD Ltd | Wholesale & retail | 2022 |
| BRS Food and Wine and News Ltd | Wholesale & retail | 2016 |
| Brs-Dance Ltd | Arts & recreation | 2024 |
| Bruegel Office Ltd | Manufacturing | 2025 |
| Brunch Cafe & Sandwich Shop Ltd | Hospitality | 2025 |
| Brunel Innovation Group Ltd | Professional & scientific | 2023 |
| Brush Boss Limited | Construction | 2025 |
| BRY2LET Ltd | Real estate | 2021 |
| Bryers Consulting Limited | Information & communication | 2024 |
| Bryson Loxley Limited | Other services | 2010 |
| Bryson Projects Limited | Wholesale & retail | 2006 |
| BSG Ventures Limited | Real estate | 2021 |
| BSR Properties Limited | Real estate | 2000 |
| BSW Ltd | Wholesale & retail | 2026 |
| BTL Northwest Ltd | Real estate | 2026 |
| BU & Co Barber Ltd | Other services | 2018 |
| BU Aesthetics Ltd | Health & social care | 2021 |
| Bucephalas Ltd | Financial services | 2022 |
| Buckle and Mcgrath Limited | Health & social care | 2007 |
| Buckleys News Ltd | Information & communication | 2012 |
| Buckleys the Cleaners Ltd | Administrative & support | 2024 |
| Buckminster Limited | Professional & scientific | 2016 |
| Budworth Court Management Company Limited | Real estate | 1976 |
| Buff Bombshell Ltd | Wholesale & retail | 2020 |
| BUG Hunting Ltd | Information & communication | 2019 |
| Build Cambridgeshire Ltd | Professional & scientific | 2022 |
| Build Cloud Skills Ltd | Information & communication | 2023 |
| Building Better MEN CIC | Education | 2026 |
| Building Blocks Day Nursery (Anderton) Limited | Health & social care | 2007 |
| Building Blocks Day Nursery (Bold Heath) Limited | Health & social care | 2007 |
| Building Blocks Day Nursery (Little Leigh) Limited | Health & social care | 2007 |
| Building Blocks Day Nursery Limited | Extraterritorial | 2007 |
| Bulldog Hire & Leasing Ltd | Administrative & support | 2025 |
| Bulwark Games Ltd | Wholesale & retail | 2022 |
| Bunnys Paint and Bodyshop Ltd | Construction | 2026 |
| Burgess Design & Build Ltd | Construction | 2016 |
| Burland Limited | Real estate | 2009 |
| Burrell Court Limited | Administrative & support | 1976 |
| Bursolutions Ltd | Wholesale & retail | 2016 |
| Burt's Leisure Ltd | Administrative & support | 2025 |
| Bus-Tec Engineering Ltd | Professional & scientific | 2022 |
| Bushells Farm Limited | Real estate | 2000 |
| Bushido Golf Limited | Other services | 2024 |
| Business & Technology Solutions Ltd | Information & communication | 2013 |
| Buttercups Childminding Ltd | Administrative & support | 2017 |
| Butterfly Theatre Company | Arts & recreation | 2018 |
| Buysure Trust & Insurance Services GB Ltd | Financial services | 2003 |
| BVH Car Sales Ltd | Wholesale & retail | 2013 |
| BW K.Ent Limited | Health & social care | 2022 |
| BW Options Limited | Administrative & support | 2016 |
| Bweralley Limited | Financial services | 1975 |
| Bwjd Consulting Limited | Professional & scientific | 2023 |
| BY Charlotte Limited | Wholesale & retail | 2021 |
| Byrne Family Properties Ltd | Real estate | 2023 |
| Bysk Medical Limited | Health & social care | 2025 |
| Bywaters ISO Audit & Consultancy Ltd | Information & communication | 2020 |
| C & a Car Care Limited | Wholesale & retail | 2005 |
| C & a Developments Wirral Ltd | Construction | 2021 |
| C & C Associates Hoylake Ltd | Other services | 2017 |
| C & K Engineering and Construction Services Ltd | Professional & scientific | 2012 |
| C & L Covers Ltd | Manufacturing | 2016 |
| C & S Properties (NW) Limited | Construction | 2000 |
| C and M Autos Waterloo Ltd | Wholesale & retail | 2016 |
| C D Earnshaw Limited | Transport & logistics | 2004 |
| C J Developments (Wirral) Limited | Manufacturing | 2018 |
| C L Hensley Limited | Professional & scientific | 2010 |
| C S Alloys (NW) Ltd | Wholesale & retail | 2015 |
| C S Invest Limited | Real estate | 2025 |
| C T Investments Limited | Real estate | 2011 |
| C ‘N’ D Events & Marquees Ltd | Administrative & support | 2024 |
| C&A Property NW Limited | Real estate | 2026 |
| C&A Taylor Property Ltd | Real estate | 2023 |
| C&C Rainbow Limited | Real estate | 2025 |