| Baadgir Limited | Real estate | 2026 |
| Baalpeor Drivers Limited | Transport & logistics | 2014 |
| Baaz AK Limited | Wholesale & retail | 2025 |
| BAB AL Rayan Ltd | Wholesale & retail | 2025 |
| Baba Jaga (Leeds) Limited | Extraterritorial | 2016 |
| Baba Nand Singh Mission (UK) Limited | Education | 2017 |
| Baba's Detailing & Valeting Ltd | Wholesale & retail | 2026 |
| Babbington Property Management Ltd | Real estate | 2006 |
| Babel Lounge Leeds Limited | Hospitality | 2025 |
| Babel Lounge Limited | Hospitality | 2020 |
| Babel the Language Magazine Ltd | Information & communication | 2022 |
| Babington Car Spares Limited | Water & waste | 2009 |
| Bablu Car Hire Ltd | Administrative & support | 2026 |
| Babs Production Ltd | Information & communication | 2019 |
| Babtooma Bradford Ltd | Hospitality | 2019 |
| Babtooma Central Kitchen Limited | Hospitality | 2022 |
| Babtooma Holdings Ltd | Financial services | 2024 |
| Babtooma Oakwood Ltd | Hospitality | 2026 |
| Babtooma SH Ltd | Hospitality | 2022 |
| Babuka Limited | Health & social care | 2013 |
| Baby and EWE Limited | Wholesale & retail | 2020 |
| Baby Ballet Leeds North Limited | Arts & recreation | 2022 |
| Baby Band Family Music Festival Ltd | Education | 2024 |
| Baby Flow Sensory Ltd | Education | 2026 |
| Baby Sensory North Leeds Limited | Other services | 2022 |
| Babylon Neurology Ltd | Health & social care | 2022 |
| Babylonia Real Estate Ltd | Real estate | 2022 |
| BAC Rail Training Ltd | Other services | 2022 |
| Bachelor Land and Property Services Limited | Real estate | 2020 |
| Back Chat Music Ltd | Arts & recreation | 2017 |
| Back Nine Golf Limited | Arts & recreation | 2023 |
| Back Room Bars Limited | Hospitality | 2012 |
| Back Three Facilities Limited | Construction | 2019 |
| Back to Basement Ltd | Construction | 2016 |
| Back to the 1980S Event & Prop Hire Ltd | Administrative & support | 2020 |
| Back's Construction Limited | Construction | 2012 |
| Backotter AA Ltd | Wholesale & retail | 2025 |
| Backsaver Garden Tools Ltd | Arts & recreation | 2007 |
| Backstop Services Ltd | Extraterritorial | 2009 |
| Backstreet Bites Ltd | Hospitality | 2026 |
| Backwater Property Limited | Hospitality | 2021 |
| Backyard Burgers Leeds Ltd | Hospitality | 2021 |
| Backyard Burgers Yorkshire Ltd | Hospitality | 2025 |
| BAD Apple Mobile Repair Ltd | Professional & scientific | 2016 |
| BAD Cavity Ltd | Administrative & support | 2017 |
| BAD Company Events Limited | Administrative & support | 2019 |
| BAD Wolf Construction Yorkshire Ltd | Construction | 2020 |
| BAD Wolf Yorkshire Ltd | Wholesale & retail | 2019 |
| Badarau Couriers Limited | Transport & logistics | 2022 |
| Badekabiner Limited | | 2011 |
| Badger Hill Dining Limited | Hospitality | 2023 |
| Badger Hill Express Limited | Hospitality | 2023 |
| Badino Limited | Hospitality | 2025 |
| Badme Ltd | Transport & logistics | 2021 |
| Badrilla Limited | Professional & scientific | 2003 |
| BAF Printers (1962) Limited | Manufacturing | 2011 |
| BAF Printers (Holdings) Limited | Financial services | 2022 |
| Bafa Tech Ltd | Information & communication | 2025 |
| Baff Logistics Ltd | Transport & logistics | 2026 |
| Baffort Consults Limited | Health & social care | 2019 |
| Bafu Enterprises Ltd | Wholesale & retail | 2021 |
| Bagaara Ltd | Hospitality | 2024 |
| Bagels and Buns Limited | Hospitality | 2025 |
| Baghdad Shawarma Grill House Ltd | Hospitality | 2024 |
| Baghdad Shawarma Grill Ltd | Hospitality | 2024 |
| Bagna Marketing Limited | Professional & scientific | 2024 |
| Bagouri Ltd | Health & social care | 2024 |
| Bagri Properties Ltd | Real estate | 2025 |
| Bagshaw Dairy Services Ltd | Wholesale & retail | 2013 |
| Bagzada Ltd | Transport & logistics | 2025 |
| Bahgo Delivery Limited | Transport & logistics | 2025 |
| Baig and Brothers Ltd | Hospitality | 2026 |
| Baige Foods Ltd | Hospitality | 2026 |
| Baildon Advisory Limited | Administrative & support | 2025 |
| Baildon Cards, Balloons & Gifts Ltd | Wholesale & retail | 2023 |
| Bailey - Hague Joinery Limited | Construction | 2008 |
| Bailey Building Management Ltd | Extraterritorial | 2001 |
| Bailey Clad Ltd | Construction | 2018 |
| Bailey Energy Limited | Extraterritorial | 1993 |
| Bailey Homes and Investments Ltd | Real estate | 2025 |
| Bailey Hunter Ltd. | Administrative & support | 2008 |
| Bailey Leasing Limited | Extraterritorial | 2000 |
| Bailey Off-Site Limited | Extraterritorial | 2005 |
| Bailey Rail Limited | Extraterritorial | 1999 |
| Bailey Springwell Management Company Limited | Households | 2024 |
| Bailey Systems Limited | Extraterritorial | 2000 |
| Bailey Walsh & Co LLP | | 2004 |
| Bailey-Hague Homes Limited | Households | 2026 |
| Bailie Group Business Services Limited | Administrative & support | 2017 |
| Bailiff Street Flat Management Company Limited | Professional & scientific | 1998 |
| Bailoran Limited | Professional & scientific | 2012 |
| Baimint Ltd | Information & communication | 2023 |
| Bainbridge Limited | Real estate | 2020 |
| Bainbridge West Ltd | Other services | 2024 |
| Bains & Hayre Limited | Administrative & support | 2014 |
| Baira Enterprises Ltd | Wholesale & retail | 2026 |
| Baird Academy Limited | Education | 2013 |
| Baird Digital LAB Solutions Limited | Health & social care | 2023 |
| Baird Group (Holdings) Limited | Professional & scientific | 2010 |
| Baird Group Limited | Professional & scientific | 2008 |