| Beach House Property Management Ltd | Real estate | 2006 |
| Beaumonts Garage Ltd | Wholesale & retail | 2003 |
| Bebe K Ltd | Wholesale & retail | 2025 |
| Beeline Broadband Ltd | Information & communication | 2003 |
| Belark Limited | Wholesale & retail | 2024 |
| Belford Property Ltd | Real estate | 2025 |
| Belgrave MAN Co Ltd | Real estate | 2014 |
| Bella DI Notte Ltd | Wholesale & retail | 2003 |
| Bella Rose Properties Ltd | Real estate | 2021 |
| Bellafax Cottages Limited | Hospitality | 2025 |
| Belt and Braces Racing Ltd | Arts & recreation | 2025 |
| BG Level Design Ltd | Professional & scientific | 2024 |
| Bias Malton Ltd | Wholesale & retail | 2023 |
| Big BEN Themes Ltd | Wholesale & retail | 1980 |
| Big Boolies.Com Limited | Manufacturing | 2012 |
| Birdsall Beef Company Limited(The) | Extraterritorial | 1985 |
| Birdsall Estates Company Limited | Agriculture & fishing | 1928 |
| BJL (Yorkshire) Limited | Financial services | 2012 |
| Black Dog Evolution Limited | Real estate | 2021 |
| Black Dog Protection Limited | Transport & logistics | 2021 |
| Blackspot Networks Ltd | Wholesale & retail | 2022 |
| Block Holding Ltd | Real estate | 2019 |
| Blueprint Letco Ltd | Real estate | 2025 |
| Bodvel Power Limited | Energy | 2016 |
| Bogg Bros. Limited | Wholesale & retail | 2003 |
| Bonnie Boltholes Limited | Construction | 2022 |
| Boom Hair Design Ltd | Other services | 2016 |
| Boulton & Cooper (Pickering) Limited | Professional & scientific | 2011 |
| Boulton & Cooper (Ryedale) Limited | Professional & scientific | 2011 |
| Boutique Property Shop Ltd | Real estate | 2018 |
| Bouveraux Consult UK Ltd | Wholesale & retail | 2025 |
| Boythorpe Wind Energy Limited | Construction | 2013 |
| BP Pubs Limited | Hospitality | 2024 |
| Bramhall Blenkharn Leonard Limited | Professional & scientific | 1995 |
| Brass Castle Brewery Limited | Manufacturing | 2013 |
| Briardale Equestrian Ltd | Agriculture & fishing | 2020 |
| Bridgedale Investments | Financial services | 2017 |
| Brill Developments Ltd | Manufacturing | 2018 |
| Brindle Food Ltd | Hospitality | 2012 |
| Brookbank House Limited | Real estate | 1980 |
| Brooklyn Pre-School Playgroup Limited | Education | 2009 |
| Bryomar Ltd | Professional & scientific | 2012 |
| Building Control AI Ltd | Information & communication | 2025 |
| Building Power Control and Protection Limited | Construction | 2008 |
| Bulk System Installations Ltd | Manufacturing | 2025 |
| Burythorpe Holdings Limited | Financial services | 2014 |
| Burythorpe House Hotel Limited | Hospitality | 2013 |
| Butler Electrical Limited | Construction | 2008 |
| BW Farms Ltd | Agriculture & fishing | 2019 |
| Byre Homes (Yorkshire) Limited | Real estate | 2019 |
| Byre Homes Limited | Construction | 2006 |
| C & H Antiques Limited | Wholesale & retail | 1997 |
| C Nugent Roofing & Cladding Ltd | Construction | 2018 |
| C O Y Consulting Limited | Professional & scientific | 2021 |
| C.F.Beal (Yedingham) Limited | Agriculture & fishing | 2013 |
| C.Lumley & Sons Limited | Agriculture & fishing | 1955 |
| CAE Llys Property Management Ltd | Real estate | 2017 |
| Cali Steel & Cladding Limited | Manufacturing | 2021 |
| Calplant Ltd | Wholesale & retail | 2012 |
| Calver Special Tuning Limited | Wholesale & retail | 2003 |
| Cameo Engraving Co. Limited | Wholesale & retail | 2012 |
| Camker Limited | Construction | 2018 |
| Camlin (Yorkshire) Limited | Professional & scientific | 2016 |
| Campbell Industries Ltd | Administrative & support | 2025 |
| Campsafe Ltd | Other services | 2025 |
| Caradoc Group Limited | Administrative & support | 2017 |
| Caravan Security Storage Limited | Other services | 1999 |
| Caravan Support Ltd | Manufacturing | 2023 |
| Carnelian Training Limited | Education | 2014 |
| Carrprep Limited | Wholesale & retail | 2023 |
| Carrprep Refinishing Limited | Wholesale & retail | 2026 |
| Carruthers Groundworks Limited | Construction | 2022 |
| Carrvault Limited | Transport & logistics | 2024 |
| Casa DEL Padel Limited | Arts & recreation | 2024 |
| Castle Construction (Scarborough) Limited | Construction | 2024 |
| Castlegate Blue Ltd | Administrative & support | 2000 |
| Castlegate Chippy Ltd | Hospitality | 2025 |
| Castlegate Furniture & Interiors Ltd | Wholesale & retail | 2024 |
| Castlemere Buildings Limited | Real estate | 2010 |
| Castlemere Holdings York Limited | Professional & scientific | 2010 |
| Catball Limited | Arts & recreation | 2025 |
| Cause Matcher Limited | Administrative & support | 2025 |
| CBP Aesthetics Ltd | Other services | 2024 |
| CCF Consultants Ltd | Wholesale & retail | 2012 |
| Cenario Limited | Information & communication | 2009 |
| CFM Electrical Limited | Manufacturing | 2003 |
| Chadhurst Group Limited | Other services | 2025 |
| Chadhurst Holdings Limited | Real estate | 2002 |
| Chadhurst Stud Limited | Professional & scientific | 2017 |
| Chancel Square Ltd | Households | 2020 |
| Chapter Two Bar Holdings Ltd | Hospitality | 2025 |
| Chapter Two Bar Ltd | Hospitality | 2024 |
| Chargefull Ltd | Administrative & support | 2025 |
| Charles Dales Developments Ltd | Construction | 2019 |
| Charles Porter Classic Cars Limited | Wholesale & retail | 2017 |
| Charles Porter Holdings Limited | Other services | 2007 |
| Charm's Homes Limited | Real estate | 2022 |
| Checkmate PIG Management Limited | Agriculture & fishing | 2016 |
| Chefs Flavours U.K. Limited | Wholesale & retail | 2026 |
| Cherish Property & Investment Ltd | Financial services | 2019 |