| Arran Consulting Limited | Construction | 2018 |
| Arrowfield Developments Limited | Construction | 2014 |
| Arthurways Limited | Transport & logistics | 2025 |
| Artys Pet Remedies Ltd | Wholesale & retail | 2025 |
| ASH Grove Flats RTM Company Limited | Households | 2025 |
| ASM Petroleum Limited | Wholesale & retail | 2024 |
| ASM UK Holdings Ltd | Real estate | 2024 |
| ASM UK Retail Limited | Wholesale & retail | 2025 |
| ASW Plumbing and Heating Limited | Construction | 2009 |
| Atala Limited | Agriculture & fishing | 2007 |
| Athlestan Homes Limited | Real estate | 2024 |
| Austin Entertainment Ltd | Information & communication | 2020 |
| Autofix Centre Ltd | Wholesale & retail | 2025 |
| AV Irrigation Limited | Manufacturing | 2012 |
| Avarra Solutions Ltd | Information & communication | 2025 |
| Avenew Competitions Limited | Arts & recreation | 2025 |
| Avyash Ltd | Real estate | 2025 |
| AWM Onsite Limited | Extraterritorial | 2014 |
| AWM Surveyors Limited | Professional & scientific | 2014 |
| B Booth & Sons Limited | Construction | 2009 |
| B J Bain Building Contractors Ltd | Construction | 2012 |
| B.S.Bassitt Plumbing & Heating Limited | Construction | 2003 |
| BAH Humbugs Limited | Wholesale & retail | 2016 |
| Bailey Livestock Limited | Agriculture & fishing | 2022 |
| Baramee Ltd | Hospitality | 2026 |
| Barbecu Ltd | Hospitality | 2023 |
| Barningham Moor Limited | Agriculture & fishing | 2020 |
| Barnyarns (Ripon) Limited | Wholesale & retail | 2006 |
| Barnyarns Exhibitions LLP | | 2017 |
| Baroque (Ripon) Ltd | Other services | 2013 |
| Barrett Hairdressing Limited | Other services | 2014 |
| Bashall Eaves Limited | Real estate | 2006 |
| Batchelors Motor Group Limited | Wholesale & retail | 1987 |
| Batchelors Motor Holdings Limited | Financial services | 2012 |
| Batchelors of York Limited | Wholesale & retail | 2017 |
| Bayspring Properties Ltd | Real estate | 2018 |
| BBQ Kebabs N Limited | Hospitality | 2026 |
| BCM Properties Yorkshire Limited | Financial services | 2025 |
| Beachseventysix Limited | Wholesale & retail | 2016 |
| Beau Cocoa (Northallerton) Ltd | Wholesale & retail | 2021 |
| Beavers Butchers Limited | Wholesale & retail | 2026 |
| Beckwith Letting and Management Ltd | Real estate | 2011 |
| Bedern Court Limited | Households | 1987 |
| BEE a Hero! Ltd | Agriculture & fishing | 2024 |
| Belward Investments Limited | Financial services | 2019 |
| BEN Sayers Editor Limited | Information & communication | 2019 |
| Bering Time Limited | Wholesale & retail | 2011 |
| Beyond Digital Limited | Manufacturing | 2014 |
| BGD Commercial Ltd | Real estate | 2024 |
| Big Dog Media Productions Limited | Information & communication | 2017 |
| Bilborough Farming LLP | | 2015 |
| Bill Plant Driving School Limited | Education | 2014 |
| Biltoft Group Ltd | Wholesale & retail | 2019 |
| Birch Tree Cabins Limited | Hospitality | 2018 |
| Bishopsound Manufacturing and Design Limited | Manufacturing | 2021 |
| Bishopton Equine Veterinary Services Ltd | Professional & scientific | 2011 |
| Bishopton Glade Ltd | Financial services | 2026 |
| Bishopton Properties Ltd | Construction | 2022 |
| Bishopton Veterinary Group LLP | | 2016 |
| Bison Property Developments Limited | Construction | 2013 |
| Black a Moor Ripon Ltd | Hospitality | 2025 |
| Black Combe Park Limited | Real estate | 2012 |
| Blossomgate Motors Limited | Wholesale & retail | 2002 |
| BLR. Medical Aesthetics Ltd | Other services | 2025 |
| Blue Front Door Limited | Real estate | 2003 |
| Bluskills Limited | Transport & logistics | 2013 |
| Blythes Garage Limited | Wholesale & retail | 2010 |
| Bond END Developments Limited | Construction | 2010 |
| Bondgate (Ripon) Management Limited | Households | 2020 |
| Book York Limited | Hospitality | 2017 |
| Boon Distribution Limited | Wholesale & retail | 2012 |
| Boyar Consulting Limited | Information & communication | 2018 |
| Bradbeer Properties Limited | Real estate | 2023 |
| Braithwaite Holdings (York) Ltd | Financial services | 2018 |
| Breaktime Group Ltd | Hospitality | 2009 |
| Breckenbrough Events Limited | Arts & recreation | 2022 |
| Briahaze Village Homes Limited | Construction | 2022 |
| Bricktime Ltd | Education | 2019 |
| Bricky's Buddy Limited | Wholesale & retail | 2021 |
| Bright Light Creative Ltd | Information & communication | 2025 |
| Bright Locations Limited | Real estate | 1999 |
| Bright Star Content Marketing Agency Ltd | Professional & scientific | 2019 |
| Bright Star Leisure Ltd | Hospitality | 2023 |
| Brilliant Bookkeepers Limited | Administrative & support | 2020 |
| British Horse Feeds B.H.F. Limited | Extraterritorial | 1980 |
| Brock Contracting Limited | Wholesale & retail | 2009 |
| Brodie Skin Care Limited | Manufacturing | 2012 |
| Bronco Limited | Information & communication | 2002 |
| Bronte Alice Decorating Limited | Construction | 2022 |
| Brookstone Wealth Ltd | Financial services | 2023 |
| Brymor Limited | Manufacturing | 2015 |
| Budwud Ltd | Construction | 2024 |
| Building Restoration & Cleaning (Leeds) Limited | Construction | 1971 |
| Built Environment Asset Management Solutions Limited | Professional & scientific | 2020 |
| Burgin Property Management Ltd | Real estate | 2024 |
| Burmella Ltd | Wholesale & retail | 2020 |
| Burrell Consulting & Services Ltd | Professional & scientific | 2021 |
| Burtree Leisure Limited | Hospitality | 2015 |
| Business Evolution Management Limited | Professional & scientific | 2004 |
| Bvgb Ltd | Real estate | 2018 |