| Bruce Warnes Consulting Limited | Professional & scientific | 2026 |
| Bruel Management Consultants Limited | Professional & scientific | 2018 |
| Bruno Diamond Limited | Extraterritorial | 2021 |
| Brunswick Court Management (Harrogate) Limited | Households | 1988 |
| Brunswick House (Harrogate) Flat Management Company Limited | Households | 1998 |
| Brush Clinical Research Ltd | Professional & scientific | 2002 |
| Brush Pro Ltd | Wholesale & retail | 2025 |
| Bscf Limited | Wholesale & retail | 2025 |
| BSM Marketing Limited | Wholesale & retail | 2025 |
| BSP Builders Limited | Construction | 2016 |
| BTP Law LLP | | 2002 |
| BTR Preparations Limited | Manufacturing | 2007 |
| BTR PRS Ltd | Hospitality | 2021 |
| BTR Reit Ltd | Financial services | 2019 |
| Bubbabear Limited | Administrative & support | 2016 |
| Buck Green Ltd | Education | 2021 |
| Bucket MAN Limited | Financial services | 2025 |
| Budbox Limited | Agriculture & fishing | 2014 |
| Buick Limited | Extraterritorial | 2012 |
| Build by Andrew Limited | Construction | 2026 |
| Build Plus Engineering Consulting Ltd | Construction | 2014 |
| Build the Bandwagon Ltd | Other services | 2021 |
| Build-Care Company International Ltd | Extraterritorial | 2021 |
| Building Blocks Lancaster Ltd | Real estate | 2007 |
| Building Cost Information Service Limited | Information & communication | 2022 |
| Builtbygeeks Ltd | Information & communication | 2018 |
| BULL5 EYE Limited | Extraterritorial | 2015 |
| Buoyant Strategy and Consultancy Ltd | Other services | 2024 |
| Burchell Building Projects Ltd | Construction | 2018 |
| Burchell Homes Ltd | Real estate | 2017 |
| Burgers & More (Harrogate) Limited | Hospitality | 2015 |
| Burlington London Limited | Extraterritorial | 2026 |
| Burning Potential Limited | Administrative & support | 2021 |
| Burnlea Estates Limited | Real estate | 2006 |
| Burnlea Group Limited | Extraterritorial | 2006 |
| Burnlea Limited | Real estate | 2005 |
| Burnley & Pendle Travel Limited | Transport & logistics | 1983 |
| Burnside Associates Limited | Professional & scientific | 2011 |
| Burnside Property Associates Ltd | Real estate | 2020 |
| Burtin-Bell Consulting Limited | Professional & scientific | 2019 |
| Burton Leonard (Maintenance) Limited | Administrative & support | 1977 |
| Burtondavey Investments Ltd | Real estate | 2025 |
| Business & Technology Risk Partners Limited | Professional & scientific | 2010 |
| Business DOT COM Ltd | Extraterritorial | 2012 |
| Business Experts Group Ltd | Wholesale & retail | 2021 |
| Business FM Limited | Extraterritorial | 2015 |
| Business Value Limited | Information & communication | 2009 |
| Buss Model Ltd | Professional & scientific | 2019 |
| Bute Catering Limited | Hospitality | 2025 |
| Bute Fridge Hire Limited | Administrative & support | 2025 |
| Bute Pizza Limited | Hospitality | 2025 |
| Butler & Walrus Ltd | Hospitality | 2022 |
| Butler Fenton Limited | Extraterritorial | 2025 |
| Butter&Bean Ltd | Hospitality | 2025 |
| Buttercup Home Care Ltd | Health & social care | 2020 |
| Butterfly Aesthetics Limited | Health & social care | 2011 |
| Butters and Brown Ltd | Wholesale & retail | 2018 |
| Buy Tickets Limited | Wholesale & retail | 2011 |
| Buyer's Mindset Limited | Administrative & support | 2017 |
| Buymurph Ltd | Wholesale & retail | 2025 |
| Buyonics Limited | Professional & scientific | 2011 |
| Buzziest Limited | Wholesale & retail | 2024 |
| BVM Residential Management Co. Limited | Households | 2007 |
| BVM Skipton Limited | Extraterritorial | 2010 |
| BY Jove Properties Limited | Real estate | 2019 |
| Bybritton Ltd | Information & communication | 2014 |
| Bynickvirr Ltd | Professional & scientific | 2009 |
| Byron & Brown Limited | Wholesale & retail | 1999 |
| Bywaters Law Limited | Professional & scientific | 2022 |
| Bywaters Topham Phillips LLP | | 2010 |
| Byxa Limited | Manufacturing | 2023 |
| Børn of the Forest CIC | Education | 2022 |
| C & C Harrogate Ltd | Hospitality | 2023 |
| C C Capital Holdings Limited | Financial services | 2024 |
| C H Electrical (North Yorkshire) Limited | Construction | 2012 |
| C M Interiors (Leeds) Limited | Construction | 2019 |
| C M S Tools Limited | Wholesale & retail | 1991 |
| C M S Trustees Limited | Administrative & support | 2024 |
| C O B Associates Ltd | Hospitality | 2004 |
| C Pattison Accounting Limited | Professional & scientific | 2021 |
| C R Marketing Limited | Professional & scientific | 2003 |
| C S Electrical Contractors (Yorkshire) Ltd | Construction | 2021 |
| C S Properties (Yorkshire) LLP | | 2008 |
| C X Leeds Limited | Construction | 2016 |
| C&C Gardens Ltd. | Administrative & support | 2024 |
| C&C Growth Limited | Professional & scientific | 2023 |
| C&N Investment Holdings Limited | Financial services | 2019 |
| C&V Import Ltd | Manufacturing | 2020 |
| C-Capture Limited | Professional & scientific | 2009 |
| C.D.S. Woodland Grove Management Company Limited | Households | 1984 |
| C.L.Firth Ltd | Construction | 2026 |
| C3 Global Solutions Ltd | Information & communication | 2022 |
| C4SH Ltd | Extraterritorial | 2017 |
| Ca$H Ltd | Extraterritorial | 2015 |
| Ca$Ino Ltd | Extraterritorial | 2015 |
| Cable and Wifi Limited | Extraterritorial | 2013 |
| Caboose Leeds Ltd | Hospitality | 2020 |
| Caerus Associates Limited | Administrative & support | 2010 |
| CAF Management and Consultancy Limited | Professional & scientific | 2017 |
| Cafe DI Lucca (Knaresborough) Limited | Hospitality | 2018 |