| B K Restaurant (Yorkshire) Ltd | Hospitality | 2018 |
| B M Howarth (Holdings) Limited | Financial services | 2019 |
| B M Howarth Group Limited | Financial services | 2023 |
| B M Howarth Limited | Professional & scientific | 2001 |
| B Marketing Services Limited | Professional & scientific | 2026 |
| B P B S Properties Ltd | Real estate | 2023 |
| B S Electrical Limited | Construction | 2015 |
| B Safe Electrical Ltd | Construction | 2019 |
| B Whitehead Limited | Construction | 2017 |
| B&W Norcliffe Properties Ltd | Real estate | 2022 |
| B.Smith Electrical Ltd | Construction | 2025 |
| B12 Medical Ltd | Administrative & support | 2020 |
| B3SA Ltd | Manufacturing | 2017 |
| Baassett Bricks Property Developers Ltd | Households | 2026 |
| Babbacombe Computers Limited | Information & communication | 1988 |
| Baby Bundles Ltd | Wholesale & retail | 2023 |
| Baby Million Limited | Wholesale & retail | 2024 |
| Babyballet Franchising Limited | Professional & scientific | 2009 |
| Babyballet Limited | Financial services | 2012 |
| BAC Vision Limited | Health & social care | 2009 |
| Back Lane Flowers Ltd | Wholesale & retail | 2025 |
| Back Lane Management Services Limited | Real estate | 2005 |
| BAE Beds Limited | Other services | 2019 |
| BAE Trearddur Management Company Limited | Households | 2014 |
| Bagdi-Corp Ltd | Information & communication | 2013 |
| Bagxpress.Com Limited | Wholesale & retail | 2020 |
| Bahama Lashes Limited | Wholesale & retail | 2019 |
| Baig Marketing Solutions Limited | Administrative & support | 2014 |
| Bailey & Co Joiners Limited | Construction | 2012 |
| Bailey Hall Limited | Real estate | 1995 |
| Bainloch Deer Park Limited | Arts & recreation | 2021 |
| Bains & Sons Halifax Ltd | Wholesale & retail | 2024 |
| Bairstow Brothers Limited | Professional & scientific | 2013 |
| Bairstow Ltd | Extraterritorial | 2024 |
| Bajaj Limited | Wholesale & retail | 2022 |
| Bakmon Ltd | Manufacturing | 2025 |
| Balaj Group Real Estate UK Ltd | Real estate | 2024 |
| Baley Marine Limited | Agriculture & fishing | 2017 |
| Ball Vapour and Co Limited | Wholesale & retail | 2018 |
| Baltix Digital Limited | Information & communication | 2021 |
| Bamboo Business Partnering Ltd | Administrative & support | 2017 |
| Bamford Brothers Ltd | Transport & logistics | 2011 |
| Bamford Building Services Limited | Construction | 2014 |
| Bamford Craft Delivery Limited | Hospitality | 2023 |
| Band Tours Limited | Extraterritorial | 2016 |
| Bandar Investments Limited | Real estate | 2018 |
| Bank of Nova Scotia | | 1920 |
| Bank Top Nature Reserve Ltd | Arts & recreation | 2019 |
| Bankfield Yard Apartments Limited | Financial services | 2021 |
| Bankgate (Lindley) Limited | Construction | 2015 |
| Bankwell Services Limited | Arts & recreation | 2005 |
| Bar 22 & Smokehouse Ltd | Hospitality | 2016 |
| Bar Kode Halifax Ltd | Hospitality | 2024 |
| Bar Private Hire Ltd | Hospitality | 2024 |
| Barathea Films Limited | Information & communication | 2021 |
| Barathea Partners Limited | Professional & scientific | 2020 |
| Barathea Productions Limited | Information & communication | 2021 |
| Barbestica Ltd | Manufacturing | 2022 |
| Barerock Claims Limited | Professional & scientific | 2020 |
| Barerock Holdings Limited | Financial services | 2019 |
| Barerock Limited | Financial services | 2020 |
| Barerock Risk Management Limited | Professional & scientific | 2020 |
| Barerock Services Limited | Professional & scientific | 2022 |
| Barford Hazel Ltd | Wholesale & retail | 2025 |
| Barford Imports Limited | Manufacturing | 1985 |
| Bargain Heaven ( Halifax) Ltd | Wholesale & retail | 2024 |
| Bark-Island Dog Field Ltd | Administrative & support | 2023 |
| Barkerhouse Ltd | Hospitality | 2024 |
| Barna Contractors Ltd | Construction | 2018 |
| Barnes Joinery Ltd | Manufacturing | 2018 |
| Barneys Joint Ltd | Hospitality | 2016 |
| Barnsdale Construction Limited | Construction | 2021 |
| Barnsdale Developments Limited | Construction | 2002 |
| Barrie Wainwright Rigging Services Ltd | Mining & quarrying | 2025 |
| Barry's Cash & Carry Ltd | Wholesale & retail | 2017 |
| Barters Walnut Ltd | Wholesale & retail | 2025 |
| Bartle Electrical Solutions Limited | Construction | 2022 |
| Bartsway Developments Ltd | Construction | 2018 |
| BAS Services Ltd | Administrative & support | 2016 |
| Baseline Assets Limited | Real estate | 2026 |
| Bashko Ltd | Real estate | 2025 |
| Basjat,S Ltd | Transport & logistics | 2025 |
| Bateman & Marsh Holdings Limited | Financial services | 2010 |
| Bateman Trading Ltd | Financial services | 2024 |
| Bates Green Farm Ltd | Agriculture & fishing | 2022 |
| Bathrooms for Life Limited | Construction | 2026 |
| Batter&Spice Ltd | Hospitality | 2026 |
| Battinson Auto Centre Ltd | Wholesale & retail | 2015 |
| Batty Developments Contracts Limited | Administrative & support | 2014 |
| Batty Developments Holdings Ltd | Real estate | 2024 |
| Batty Developments Limited | Construction | 2005 |
| Batty Plant Limited | Administrative & support | 2021 |
| Bauer Doodson Group Ltd | Hospitality | 2022 |
| Bawtry Home Cinema Limited | Professional & scientific | 2016 |
| Baxendale Vanzie Solicitors Limited | Professional & scientific | 2009 |
| BB Capital Investments Ltd | Real estate | 2025 |
| BB Craft Limited | Construction | 2021 |
| BB Exclusive Fabrications Ltd | Manufacturing | 2018 |
| BBM Property Developments Ltd | Real estate | 2025 |
| BBQ Land Limited | Wholesale & retail | 2009 |