| Burgess Incorporated Executive Training Services Limited | Hospitality | 2017 |
| Burgess-Evans Ltd | Professional & scientific | 2026 |
| Burgh Holdings Ltd | Administrative & support | 2026 |
| Burgos Services Limited | Information & communication | 2025 |
| Burhan Basket Limited | Wholesale & retail | 2025 |
| Burke Gray Castle Limited | Professional & scientific | 2011 |
| Burkert Logistics Ltd | Transport & logistics | 2025 |
| Burkert Projects Ltd | Real estate | 2025 |
| Burlywood Capital LLP | | 2012 |
| Burn & Brew Ltd | Hospitality | 2025 |
| Burn Everything Events & Staffing Ltd | Hospitality | 2025 |
| Burnand ST Ltd | Real estate | 2025 |
| Burness Consultants Limited | Professional & scientific | 2025 |
| Burnett Stellar BPR Trading Limited | Professional & scientific | 2021 |
| Burnham & Gilroy Ltd | Construction | 2012 |
| Burnley Motors (Liverpool) Limited | Wholesale & retail | 1970 |
| Burnley Vanz MAN Ltd | Wholesale & retail | 2025 |
| Burnley Wood Management Company Limited | Households | 2010 |
| Burns Auto Tech. Limited | Wholesale & retail | 1998 |
| Burns Brickwork Contractors Ltd | Construction | 2025 |
| Burns Heating and Plumbing Limited | Construction | 2024 |
| Burnspropertynorthwest Ltd | Real estate | 2025 |
| Burntoutlpl Limited | Hospitality | 2024 |
| Burph Industry Limited | Manufacturing | 2025 |
| Burrello Limited | Households | 2002 |
| Burrows Builders NW Ltd | Construction | 2026 |
| Burrows Damp Specialists Limited | Construction | 2020 |
| Burscough Garage Limited | Wholesale & retail | 2009 |
| Burscough New and Reclaimed Timber Limited | Manufacturing | 2025 |
| Burscough Street Holdings Limited | Real estate | 2017 |
| Burys Solicitors Limited | Professional & scientific | 2013 |
| Bush and Hart Ltd | Manufacturing | 2013 |
| Bushbys Lane Homes Limited | Construction | 2025 |
| Bushra Technologies Ltd | Education | 2026 |
| Business Associations (Liverpool) Limited | Other services | 2005 |
| Business Fairs UK Limited | Professional & scientific | 2007 |
| Business Homes Cardonald Park Limited | Real estate | 2008 |
| Business Homes Turnberry Limited | Real estate | 2007 |
| Business in Liverpool Limited | Administrative & support | 1982 |
| Business Interruption Claims Management Ltd | Professional & scientific | 2021 |
| Business Lead Connections Ltd | Administrative & support | 2011 |
| Business Link Consultancies UK Ltd | Professional & scientific | 2021 |
| Business Rates Services Ltd | Administrative & support | 2018 |
| Business Travel Consultancy Ltd | Professional & scientific | 2024 |
| Business Travel Experts Ltd | Administrative & support | 2026 |
| Bussetech Laboratories Ltd. | Professional & scientific | 2016 |
| Busybus Holdings Limited | Other services | 2025 |
| Busybuys Ltd | Wholesale & retail | 2019 |
| BUT IT Sounds Good Ltd | Arts & recreation | 2023 |
| Butcher Beef Ltd | Wholesale & retail | 2025 |
| Butcheroo Limited | Other services | 2025 |
| Butler Exclusive Ltd | Other services | 2024 |
| Butler Inc Limited | Administrative & support | 2025 |
| Butter Popcorn Productions Ltd | Information & communication | 2026 |
| Butterfield Partners Limited | Health & social care | 2019 |
| Butterfield Street 1959 Limited | Extraterritorial | 2014 |
| Butterflies Flying Limited | Other services | 2023 |
| Butterflies Rising Ltd | Other services | 2023 |
| Butterfly Construction Limited | Construction | 2015 |
| Butternut B Ltd | Health & social care | 2018 |
| Butters Innovation Limited | Professional & scientific | 2008 |
| Buttersilk Properties Ltd | Real estate | 2001 |
| Butterworth Holdings Ltd | Real estate | 2020 |
| Buttons and Lace Limited | Wholesale & retail | 2024 |
| Buttyuk Limited | Hospitality | 2025 |
| Butyl Tapes Holdings Ltd | Financial services | 2022 |
| Buxton E E Limited | Real estate | 2017 |
| Buxton Medical and Educational Services Limited | Manufacturing | 2020 |
| Buy ALL YOU Need Limited | Wholesale & retail | 2025 |
| Buy Status Limited | Wholesale & retail | 2019 |
| Buy the Brands Limited | Wholesale & retail | 2017 |
| Buy Ventilation Limited | Construction | 2024 |
| BUY4LESS Ltd | Wholesale & retail | 2020 |
| Buyatoday Limited | Wholesale & retail | 2016 |
| Buyers Club Ltd | Hospitality | 2015 |
| Buyinsulation.Com Limited | Wholesale & retail | 2020 |
| Buzby Limited | Other services | 2014 |
| Buzzworld Limited | Wholesale & retail | 2026 |
| BV Dryliners Ltd | Construction | 2019 |
| BV IT Solutions Ltd | Information & communication | 2021 |
| BV Music Ltd | Arts & recreation | 2019 |
| BW Psychology Ltd | Health & social care | 2026 |
| BWB Holdco Ltd | Financial services | 2025 |
| BWG Consultants Ltd | Administrative & support | 2019 |
| BWM Accountants Limited | Professional & scientific | 2000 |
| BWM Services UK Ltd | Administrative & support | 2019 |
| Bwtc Property Ltd | Real estate | 2025 |
| BXB (Cowley Hill) Limited | Real estate | 2018 |
| BXB (Thornton) Limited | Real estate | 2020 |
| BXB Land Solutions Limited | Professional & scientific | 2014 |
| BY Alexandra Aesthetics Ltd | Extraterritorial | 2023 |
| BY Ambient Ltd | Real estate | 2025 |
| BY Chalai Beauty Ltd | Wholesale & retail | 2019 |
| BY Crawford Ltd | Professional & scientific | 2021 |
| BY Design Group Limited | Education | 1996 |
| BY Esme Rose Ltd | Wholesale & retail | 2019 |
| BY Kaitlyn Marie Ltd | Other services | 2025 |
| BY News & Wine Ltd | Wholesale & retail | 2025 |
| BY the Wind Ltd | Administrative & support | 2024 |
| BYA Trans Ltd | Transport & logistics | 2018 |