| Bownass Surveys Limited | Professional & scientific | 2025 |
| Bowthorpe Developments Limited | Construction | 2018 |
| Box 2 Go Today Limited | Administrative & support | 2016 |
| Box Balloons Ltd | Wholesale & retail | 2022 |
| Box Clever Marketing Intelligence Limited | Professional & scientific | 2010 |
| Box Fresh Gaming Ltd | Wholesale & retail | 2025 |
| Box Investments Limited | Real estate | 2019 |
| Box Media Studios Limited | Professional & scientific | 2003 |
| Box to Box Design Ltd | Professional & scientific | 2024 |
| Box Tree Investments | Financial services | 2014 |
| Box Tree Weddings and Events Limited | Arts & recreation | 2026 |
| Box-Head* Ltd | Information & communication | 2011 |
| Box-Ticked Ltd | Manufacturing | 2023 |
| Boxcoach Limited | Information & communication | 2025 |
| Boxed-Off Resourcing Limited | Administrative & support | 2016 |
| Boxes of Bricks Limited | Wholesale & retail | 2020 |
| Boxfish Print Management Limited | Manufacturing | 2024 |
| Boxhublogistics Limited | Wholesale & retail | 2024 |
| Boxitems Ltd | Transport & logistics | 2026 |
| Boxphish Ltd | Information & communication | 2018 |
| Boxt Limited | Administrative & support | 2025 |
| Boxzd Limited | Wholesale & retail | 2022 |
| Boycie Properties Limited | Real estate | 2010 |
| Boyden Property Investments Limited | Real estate | 2025 |
| Boyds Mill Management Company Limited | Real estate | 2015 |
| Boyle Group Industries Limited | Financial services | 2024 |
| BOZ Property Co Ltd | Real estate | 2023 |
| BP Abstract Software Projects Ltd | Professional & scientific | 2019 |
| BP Aerial Consultancy Ltd | Administrative & support | 2025 |
| BP Collective Properties Limited | Real estate | 2019 |
| BPA (UK) Limited | Manufacturing | 2002 |
| BPA Vacuum Pumps Limited | Extraterritorial | 2004 |
| Bpbsales Ltd | Wholesale & retail | 2024 |
| BPD Contractors Limited | Construction | 2014 |
| BPI2 Ltd | Transport & logistics | 2025 |
| BPJ Property Development Limited | Real estate | 2022 |
| Bpkt Limited | Financial services | 2018 |
| BPM Performance Ltd | Professional & scientific | 2019 |
| BPM Systems Limited | Administrative & support | 2008 |
| Bpmmj Estates Ltd | Real estate | 2013 |
| BPO Healthcare Limited | Health & social care | 2022 |
| BPP Services Group Limited | Administrative & support | 2024 |
| BPR Audit Limited | Professional & scientific | 2018 |
| BPR Heaton Limited | Extraterritorial | 2022 |
| BPR Holdings Limited | Professional & scientific | 2018 |
| Bprep Limited | Manufacturing | 2020 |
| BPS (Leeds) Limited | Wholesale & retail | 2009 |
| BR Luxury Cars Limited | Wholesale & retail | 2025 |
| BR Motor Ltd | Wholesale & retail | 2022 |
| BR1DGE Estates Limited | Real estate | 2015 |
| BRA Nana Hair and Media Studio Ltd | Other services | 2023 |
| Braavos Investments Limited | Real estate | 2014 |
| Brabco (2006) Limited | Professional & scientific | 2003 |
| Brabus Ltd | Wholesale & retail | 2026 |
| Bracken Developments (Northern) Limited | Construction | 1997 |
| Bracken Developments (Yorkshire) Limited | Real estate | 1986 |
| Bracken Edge Association Football Ground Limited(The) | Arts & recreation | 1938 |
| Bracken Lettings Ltd. | Real estate | 2002 |
| Bracken Limited | Real estate | 1994 |
| Brackendale Spinning Company Limited | | 1953 |
| Brackenridge Hanson Tate Limited | Real estate | 2010 |
| Brackenwood Imports Ltd | Wholesale & retail | 2026 |
| Brackenwood Therapeutics Ltd | Health & social care | 2025 |
| Bradbury-Craven Limited | | 1994 |
| Bradclad Investments Limited | Manufacturing | 2023 |
| Bradclad Limited | Administrative & support | 1992 |
| Bradd Build Ltd | Construction | 2019 |
| Bradd Property's Ltd | Real estate | 2024 |
| Braddock Consultancy Limited | Professional & scientific | 2025 |
| Bradford & Airedale (Lift) Investments Limited | Professional & scientific | 2010 |
| Bradford & Airedale Estates Partnership Limited | Professional & scientific | 2004 |
| Bradford & Airedale Fundco 1 Limited | Construction | 2004 |
| Bradford & Airedale Fundco 2 Limited | Real estate | 2005 |
| Bradford & Airedale Fundco 3 Limited | Construction | 2007 |
| Bradford & Airedale Fundco 4 Limited | Construction | 2009 |
| Bradford & Airedale Holdco 1 Limited | Professional & scientific | 2004 |
| Bradford & Airedale Holdco 2 Limited | Professional & scientific | 2005 |
| Bradford & Airedale Holdco 3 Limited | Construction | 2007 |
| Bradford & Airedale Holdco 4 Limited | Construction | 2009 |
| Bradford & Bingley Investments | Extraterritorial | 1997 |
| Bradford & Bingley Limited | Financial services | 2000 |
| Bradford Arts Complex Limited | Arts & recreation | 2018 |
| Bradford Arts Limited | Arts & recreation | 2018 |
| Bradford Boxmakers Limited | Manufacturing | 1914 |
| Bradford Bulls Stadium Limited | Other services | 2021 |
| Bradford Car Glass Ltd | Wholesale & retail | 2026 |
| Bradford Developments (Yorkshire) Limited | Construction | 2010 |
| Bradford District Community Foundation | Administrative & support | 2009 |
| Bradford Energy Limited | Construction | 2021 |
| Bradford Hearing Centre Ltd | Wholesale & retail | 2025 |
| Bradford Management Services LLP | | 2013 |
| Bradford Orthopaedics Limited | Health & social care | 2012 |
| Bradford Property Surveyors Ltd | Construction | 2023 |
| Bradfordvts Ltd | Education | 2017 |
| Bradley Energy Services Ltd | Energy | 2017 |
| Bradley Mellor Improvement Ltd | Professional & scientific | 2025 |
| Bradley UK Properties Ltd | Real estate | 2021 |
| Bradley&Foote Partner Ltd | Hospitality | 2023 |
| Bradley-Bowles Ltd | Real estate | 2018 |
| Bradleys International Limited | Administrative & support | 2024 |