| Bohemian Ambr Ltd | Professional & scientific | 2019 |
| Bohemian Payroll Ltd. | Professional & scientific | 2018 |
| Bohemian Recovery Ltd. | Professional & scientific | 2018 |
| Boiler GUY 24/7 Ltd | Construction | 2026 |
| Boiler Guyz Ltd | Construction | 2025 |
| Boiler Rescue 247 Ltd | Construction | 2026 |
| Boiler Response UK Ltd | Construction | 2019 |
| Boiler Tech 24/7 : 24 Hour Boiler Repairs - Service - Installation Ltd | Construction | 2024 |
| Boilerman : 24 Hour Boiler Repairs - Service - Installation Ltd | Construction | 2017 |
| Bolab Limited | Manufacturing | 2024 |
| Bolabros Nexus Ltd | Arts & recreation | 2025 |
| Bolasko World Ltd | Professional & scientific | 2025 |
| Bold Bites Limited | Administrative & support | 2025 |
| Bollywood Music Academy Limited | Arts & recreation | 2023 |
| Bolton Hall Motors Ltd | Wholesale & retail | 2024 |
| Bolton Pizza Limited | Hospitality | 2024 |
| Bolton RD Convenience Ltd | Wholesale & retail | 2019 |
| Bombay Spice Marylebone Limited | Hospitality | 2025 |
| Bombay Stores Management Limited | Professional & scientific | 2021 |
| Bombay Stores Wholesale Ltd | Wholesale & retail | 2018 |
| BON and Belle Limited | Other services | 2024 |
| Bonchat Ltd | Health & social care | 2023 |
| Bong Wong Group Ltd | Wholesale & retail | 2025 |
| Bonyan Properties Limited | Real estate | 2021 |
| Booboo World Limited | Arts & recreation | 2025 |
| Book Bash Ltd | Other services | 2026 |
| Book Foundry Ltd | Wholesale & retail | 2018 |
| Book Technologies Inc. ( Taxi Group ) Limited | Transport & logistics | 2025 |
| Book Technologies Inc. ( the Bradford Taxi Company) Limited | Transport & logistics | 2025 |
| Book Technologies Inc. (GET2 Group) Limited | Information & communication | 2025 |
| Book Technologies Inc. (GET2 Taxi Group) Corporation Limited | Other services | 2025 |
| Book Technologies Inc. Limited | Information & communication | 2025 |
| Book Technologies Inc. Torn by Two Cultures Two Different Lives One Heart Breaking Story Miriam Farid Limited | Transport & logistics | 2024 |
| Book Tuition Ltd | Education | 2025 |
| Booker Wellman (Holdings) Limited | Real estate | 1980 |
| Books Asia Ltd | Wholesale & retail | 2013 |
| Bool Studios Ltd | Information & communication | 2024 |
| Boostmotive Ltd | Information & communication | 2025 |
| Boota Enterprises Ltd | Wholesale & retail | 2004 |
| Boota Muhammad Ltd | Transport & logistics | 2025 |
| Booth Homes Ltd | Real estate | 2023 |
| Bootiful Bars Ltd | Hospitality | 2019 |
| BOP Transport Limited | Transport & logistics | 2024 |
| Bora Wash Limited | Wholesale & retail | 2024 |
| Bordervalley Limited | Professional & scientific | 2002 |
| Borduex Storage Ltd | Transport & logistics | 2025 |
| Borgwarner Holdings Limited | Professional & scientific | 1989 |
| Borgwarner Limited | Manufacturing | 1989 |
| Borgwarner Trustees Limited | Financial services | 1988 |
| Born Nineteen Ltd | Wholesale & retail | 2024 |
| Born Nutrition Limited | Hospitality | 2024 |
| Boroughmuir Holdings Ltd | Households | 2024 |
| Borsdane Precinct Retail Limited | Real estate | 2010 |
| Borshed Property Limited | Real estate | 2026 |
| Borsi Logistics Limited | Transport & logistics | 2025 |
| Boscos of Birkenshaw Limited | Hospitality | 2023 |
| Bosgmann Sport Ltd | Wholesale & retail | 2021 |
| Boss Bites Limited | Hospitality | 2026 |
| Boss Cooperation Ltd | Hospitality | 2023 |
| Boss PUB Management Limited | Hospitality | 2021 |
| Boss Security Systems Ltd | Administrative & support | 2008 |
| Bostan Global Ltd | Real estate | 2024 |
| Bostan Optical Ltd | Other services | 2024 |
| Bostocks Boyce Welch (ASC) Limited | Professional & scientific | 2024 |
| Bostocks Boyce Welch (ASC2) Limited | Professional & scientific | 2024 |
| Bostonz Finest Picks Ltd | Wholesale & retail | 2024 |
| Botanical Cornfield Limited | Real estate | 2017 |
| Botanical HUE Ltd | Extraterritorial | 2021 |
| Bottom Line Analytics Limited | Information & communication | 2013 |
| Botwyse Ltd | Information & communication | 2025 |
| Bou-Tiq Ltd | Hospitality | 2025 |
| Bounce Back Carpets Ltd | Administrative & support | 2021 |
| Boundary Courier Services Ltd | Construction | 2016 |
| BOUNTY247DOMICILIARYCARE Ltd | Health & social care | 2025 |
| Bowelsurgeryclinic Ltd | Health & social care | 2020 |
| Bowen & Beaumont Ltd | Wholesale & retail | 2025 |
| Bowling Auto Parts Ltd | Wholesale & retail | 2026 |
| Bowling Cars Ltd. | Wholesale & retail | 2014 |
| Bowling Hall Mini Mart Ltd | Wholesale & retail | 2025 |
| Bowling Hall Road Store Limited | Wholesale & retail | 2023 |
| Bowling MOT Centre Limited | Manufacturing | 2012 |
| Bowling Print Ltd | Manufacturing | 2025 |
| Bowstrength Limited | | 1993 |
| Box Property Solutions Ltd | Other services | 2008 |
| Box Stop Ltd | Arts & recreation | 2023 |
| Box World Ltd | Wholesale & retail | 2016 |
| Boxedup Brands Limited | Wholesale & retail | 2025 |
| Boxing Platinum Ltd | Other services | 2019 |
| Boxter Ltd | Wholesale & retail | 2020 |
| BP Bradford Ltd | Hospitality | 2024 |
| BP Car Sales Ltd | Wholesale & retail | 2019 |
| BP Concierge Ltd | Hospitality | 2025 |
| BP Electronics Yorkshire Ltd | Wholesale & retail | 2019 |
| BP217 T/A Simply Local Ltd | Wholesale & retail | 2017 |
| BPC Health Partnerships Limited | Health & social care | 2025 |
| Bpevie Ltd | Administrative & support | 2026 |
| BPR Residential and Commercial Ltd | Real estate | 2019 |
| BPT Accountancy Services Ltd | Professional & scientific | 2021 |
| Bptransport Ltd | Transport & logistics | 2026 |
| BR Apothecaries Ltd | Other services | 2024 |