| Atco Completions Services Ltd | Professional & scientific | 2015 |
| Atina HR Solutions Limited | Administrative & support | 2025 |
| Awka Limited | Mining & quarrying | 2013 |
| Awkj Limited | Mining & quarrying | 2012 |
| Ayriel Millinder Ltd | Arts & recreation | 2018 |
| B R LE Blond Ltd | Manufacturing | 2017 |
| B.H. Refrigeration Limited | Manufacturing | 2005 |
| BAG FR LLP | | 2015 |
| Bagdale Hall Hotels Limited | Hospitality | 1999 |
| Barnsley Precious Metals Ltd | Wholesale & retail | 2010 |
| Barrys Electrical Technical Services Ltd | Manufacturing | 2019 |
| Bay Private Hire Limited | Transport & logistics | 2014 |
| Bayplaza Estates Limited | Professional & scientific | 2009 |
| Baytown Stores Ltd | Wholesale & retail | 2023 |
| Bearwoodsensations Ltd | Wholesale & retail | 2023 |
| Beckside Minerals Limited | Financial services | 2012 |
| Beer O' Clock Limited | Hospitality | 2025 |
| Bell & Nightingale Limited | Professional & scientific | 2025 |
| Bell Snoxell Building Consultants Limited | Professional & scientific | 2010 |
| Belle VUE Terrace Management Company Limited | Households | 2012 |
| Bentleys Bushpigs Ltd | Administrative & support | 2020 |
| Berties of Bay Lifestyle Ltd | Wholesale & retail | 2019 |
| Bespoke Property Ventures Limited | Real estate | 2018 |
| Best Raffle Opportunities Ltd | Arts & recreation | 2025 |
| Betsy & BO Ltd | Wholesale & retail | 2021 |
| Beyond Boundaries North Yorkshire Limited | Health & social care | 2016 |
| Bftt Resources Inc. | | 2015 |
| BHC Holdings Limited | Professional & scientific | 1997 |
| BHD Design Ltd | Professional & scientific | 2022 |
| Bimble Bees Ltd | Health & social care | 2018 |
| Bird & Company Design Limited | Extraterritorial | 2009 |
| Bitz N Pizzas Ltd | Hospitality | 2014 |
| Bizzy Beez Laundry Limited | Administrative & support | 2014 |
| Black Dog Nexus Limited | Real estate | 2026 |
| Black Swan Shoppe (Whitby) Ltd | Wholesale & retail | 2014 |
| Blair WM Hankin Ltd | Construction | 2017 |
| Blason Limited | Wholesale & retail | 2025 |
| Blisterhelp Ltd | Health & social care | 2018 |
| Bloody Minded Limited | Hospitality | 2018 |
| Blue Spinach Golf & Travel Ltd | Administrative & support | 2018 |
| BM (Whitby) Ltd | Real estate | 2012 |
| Bmpj Limited | Professional & scientific | 2012 |
| BMR Commercial Ltd | Construction | 2026 |
| BMR Holiday Homes Ltd | Hospitality | 2019 |
| BMR Homes Ltd | Real estate | 2018 |
| Boggle Farm Limited | Agriculture & fishing | 2020 |
| Bonfire Hill Art Ltd | Information & communication | 2023 |
| Bop's Consultancy Limited | Professional & scientific | 2016 |
| Botham's Group Ltd | Financial services | 2023 |
| Boxsharp Engineering Solutions Ltd | Professional & scientific | 2019 |
| Bradgate Inheritance Limited | Administrative & support | 2012 |
| Bramley Cash for Clothes Limited | Wholesale & retail | 2014 |
| Braun International Limited | Manufacturing | 1995 |
| Break Fluid Beverages Ltd | Wholesale & retail | 2022 |
| Brereton Lodge Moors Centre Limited | Other services | 1995 |
| Brewbuild Ltd | Construction | 2008 |
| Brian Hewison Limited | Construction | 2001 |
| Bridge Garage Whitby Limited | Wholesale & retail | 2019 |
| Briggswath Engineering & Asset Management Ltd | Professional & scientific | 2020 |
| Broadings Farm Caravan Site Limited | Hospitality | 2021 |
| Brook House Minerals Limited | Mining & quarrying | 2018 |
| Browns Chocolate Heaven Ltd | Hospitality | 2022 |
| Browns Engineers (Heating & Cooling) Ltd | Construction | 2021 |
| Brunswick Centre Events Ltd | Hospitality | 2021 |
| BT Auto Services Ltd | Wholesale & retail | 2025 |
| Bugscreen Limited | Information & communication | 2026 |
| Bunyansproperty Ltd | Real estate | 2025 |
| C C Lifting Services Limited | Construction | 2022 |
| C T Knaggs Excavation and Groundworks Limited | Construction | 2021 |
| C.H.M. (Whitby) Limited | Hospitality | 1988 |
| C.J.H Electrical Services Ltd | Professional & scientific | 2025 |
| Café Quest Ltd | Wholesale & retail | 2018 |
| Camphill Community Ventures Ltd | Wholesale & retail | 2016 |
| Capello Whitby Ltd | Other services | 2025 |
| Capewell Horse Nail Company Limited | Professional & scientific | 1929 |
| Carben Hospitality Ltd | Hospitality | 2026 |
| Carlanth Fishing Company Limited | Administrative & support | 2016 |
| Carleg Limited | Mining & quarrying | 2013 |
| Carr Hall Developments Limited | Construction | 1998 |
| Carr Hall Estates Limited | Households | 2011 |
| Carr Hall Gardens Management Limited | Households | 1999 |
| Casi Laundry & Cleaning Services Ltd | Other services | 2023 |
| Castle Computing Solutions Ltd | Other services | 2025 |
| Catwick Farm Minerals Ltd | Mining & quarrying | 2012 |
| Cbriggs Industrial Services Ltd | Other services | 2015 |
| CC Group NE Limited | Real estate | 2024 |
| CC Rental Services Ltd | Real estate | 2026 |
| CC Resourcing Services Ltd | Administrative & support | 2023 |
| CE & ST Whitby Agency Ltd | Hospitality | 2023 |
| CE Hogarth (Motor Repairs) Limited | Wholesale & retail | 2002 |
| Cedarwood Cleaning Ltd | Administrative & support | 2017 |
| Cervone's Ice Cream Ltd | Hospitality | 2026 |
| Chalfont Geomatics Ltd | Construction | 2013 |
| Chameleon Music Group Limited | Arts & recreation | 2023 |
| Chameleon Music Marketing Ltd | Professional & scientific | 2004 |
| Chameleon Music Productions Limited | Arts & recreation | 2023 |
| Chapmanspropertygroup Ltd | Real estate | 2025 |
| Charlie Bennison Limited | Construction | 2000 |
| Cherry Tree Cottage Goathland Ltd | Agriculture & fishing | 2025 |
| Chestnut Investment Holdings Ltd | Hospitality | 2022 |