| Burney Medical Enterprise Ltd | Health & social care | 2024 |
| Burnham Acadia Limited | Financial services | 2016 |
| Burnham Associates Ltd | Professional & scientific | 2025 |
| Burnham GS Limited | Hospitality | 2023 |
| Burnham Limited | Real estate | 2026 |
| Burning Barn Limited | Manufacturing | 2017 |
| Burning Soul Brewing Ltd | Manufacturing | 2016 |
| Burnside Wholesale Ltd | Wholesale & retail | 2011 |
| Burraq Aviation Ltd | Education | 2024 |
| Burraq Managements Ltd | Real estate | 2018 |
| Burrellz Limited | Construction | 2014 |
| Burritt Consulting Limited | Professional & scientific | 2011 |
| Burrizos Ltd | Hospitality | 2021 |
| Burroughes & Watts Limited | Manufacturing | 2002 |
| Burrows Flooring Limited | Construction | 2015 |
| Bursa Enterprises Ltd | Wholesale & retail | 2023 |
| Burseide Fashion Ltd | Other services | 2025 |
| Bursledon Food Limited | Hospitality | 2025 |
| Burslem Arts Limited | Administrative & support | 2018 |
| Burslem Kang Limited | Real estate | 2021 |
| Burst & Bite Ltd | Hospitality | 2024 |
| Burst of Code Ltd | Information & communication | 2015 |
| Burton & Wilkinson Limited | Professional & scientific | 1995 |
| Burton Bathroom & Heating Ltd | Wholesale & retail | 2026 |
| Burton Family Dental Buying Group Ltd | Health & social care | 2024 |
| Burton Hall RTM Company Limited | Households | 2008 |
| Burton Road Leisure Ltd | Hospitality | 2025 |
| Burtonmarkett Ltd | Wholesale & retail | 2026 |
| Burtonwood Clinic Limited | Other services | 2020 |
| Burwood Care Home Limited | Health & social care | 2014 |
| Bury Spinney (Houghton Regis) Management Company Limited | Households | 2025 |
| Bury, Tameside & Glossop Development Limited | Professional & scientific | 2008 |
| Bury, Tameside & Glossop Estates Partnership Limited | Professional & scientific | 2007 |
| Bury, Tameside & Glossop Fundco 1 Limited | Construction | 2007 |
| Bury, Tameside & Glossop Fundco 2 Limited | Construction | 2009 |
| Buryfield Care Services Ltd | Health & social care | 2025 |
| BUS One Ltd | Transport & logistics | 2025 |
| BUSANGA11 Limited | Wholesale & retail | 2025 |
| Bush Boho Flowers Ltd | Wholesale & retail | 2022 |
| Bush Commercial Properties Ltd. | Real estate | 2001 |
| Bush Home Limited | Health & social care | 2012 |
| Bush PUB Limited | Hospitality | 2018 |
| Bushbury Hill EMB Limited | Extraterritorial | 2014 |
| Bushbury Road 1960 Limited | Extraterritorial | 2014 |
| Bushdokta Ltd | Wholesale & retail | 2020 |
| Bushra Khalil Ltd | Wholesale & retail | 2025 |
| Bushwood Ltd | Other services | 2021 |
| Busigen Limited | Professional & scientific | 1991 |
| Business & Baltis Ltd | Administrative & support | 2025 |
| Business and Accountancy Assist Limited | Professional & scientific | 2006 |
| Business Brilliance Awards Ltd | Administrative & support | 2023 |
| Business Broadcast Communications Limited | Information & communication | 2009 |
| Business Building Limited | Professional & scientific | 2011 |
| Business Centred Solutions Limited | Professional & scientific | 2017 |
| Business Clean Limited | Administrative & support | 2001 |
| Business Comparison Hub Limited | Financial services | 2017 |
| Business Control Solutions Group Trustees Limited | Administrative & support | 2018 |
| Business Council for Sustainable Development-United Kingdom | Other services | 1999 |
| Business Demand INT Limited | Wholesale & retail | 2026 |
| Business Excellence Awards Ltd | Administrative & support | 2023 |
| Business File Group Limited | Information & communication | 1986 |
| Business File Limited | Professional & scientific | 2003 |
| Business Finance Expert (Midlands) Ltd | Financial services | 2024 |
| Business for Sale (UK) Limited | Extraterritorial | 2008 |
| Business Gothic Ltd | Information & communication | 2025 |
| Business Growth England Ltd. | Professional & scientific | 2018 |
| Business Growth Support Services Ltd | Professional & scientific | 2021 |
| Business Growth UK Holdings Limited | Financial services | 2023 |
| Business Insights Private Limited | Information & communication | 2014 |
| Business Law Ltd | Professional & scientific | 2020 |
| Business Loan Capital Limited | Other services | 2015 |
| Business Owners Network Global Ltd | Professional & scientific | 2025 |
| Business Personnel Services Limited | Administrative & support | 2016 |
| Business Rates Appeals Ltd | Administrative & support | 2019 |
| Business Rescue Team Limited | Other services | 2025 |
| Business Response Limited | Administrative & support | 2018 |
| Business Seeds Limited | Professional & scientific | 2018 |
| Business Services & Solutions Limited | Other services | 2014 |
| Business Services MK Limited | Administrative & support | 2019 |
| Business Solutions Birmingham Limited | Professional & scientific | 2019 |
| Businessadapts Limited | Professional & scientific | 2016 |
| Businessfinancegb Limited | Financial services | 2018 |
| Businessmatics Limited | Wholesale & retail | 2016 |
| Businesswise Accounting Limited | Professional & scientific | 2017 |
| Businesswise Consultants Limited | Professional & scientific | 2012 |
| Businesswise Training & Consultancy Limited | Professional & scientific | 2016 |
| Bussinnchicken Street Food Ltd | Hospitality | 2024 |
| Busy Bears Nursery Limited | Health & social care | 2018 |
| Busy BEE Investments Limited | Construction | 2022 |
| Busy Bees Limited | Extraterritorial | 1947 |
| Busy Cat Limited | Real estate | 2020 |
| Busy Cleaning Ltd | Other services | 2011 |
| Busy Hands and Brain Crafts Ltd | Wholesale & retail | 2023 |
| Busy Little Bees Nursery (Hall Green) Limited | Education | 2004 |
| Busy Little Bees Nursery (Handsworth Wood) Limited | Education | 2022 |
| Busybees Designs Ltd | Administrative & support | 2021 |
| Butchers of Balsall Heath Ltd | Wholesale & retail | 2023 |
| Butler & Finnigan Dental Practice (B.C .) Ltd | Health & social care | 2013 |
| Butler Holdings Limited | Extraterritorial | 2015 |
| Butler Valves and Fittings Limited | Manufacturing | 1994 |