| Bespoke Eyewear Solutions Ltd | Health & social care | 2018 |
| Bespoke Glass Services Limited | Construction | 2022 |
| Bespoke Prosthetics & Orthotics Ltd | Manufacturing | 2015 |
| Best Bargain Worldwide Limited | Wholesale & retail | 2024 |
| Best Cellar Fine Wines Ltd | Wholesale & retail | 2024 |
| Best Hand Car Wash Huddersfield Ltd | Administrative & support | 2025 |
| Best Impressions Ltd | Manufacturing | 1997 |
| Best of the Badge Ltd | Wholesale & retail | 2020 |
| Bestbeds Online Ltd | Wholesale & retail | 2023 |
| Besthy Ltd | Professional & scientific | 2018 |
| Bethany Day Nursery Ltd | Education | 2002 |
| Bethel and West Park ST Freehold Ltd | Real estate | 2024 |
| Bethoron Properties Ltd | Real estate | 2025 |
| Better Bloods Ltd | Health & social care | 2024 |
| Better Buying Ltd | Wholesale & retail | 2024 |
| Betwin Connections Ltd | Information & communication | 2024 |
| Bevip Fashion Limited | Wholesale & retail | 2022 |
| BEX Berry Marketing Ltd | Professional & scientific | 2024 |
| Beyond Ashgrove Ltd | Hospitality | 2025 |
| Beyond Components Ltd | Wholesale & retail | 2020 |
| Beyond Cravings Ltd | Professional & scientific | 2025 |
| Beyond Digital Holdings Ltd | Financial services | 2025 |
| Beyond Digital IO Ltd | Information & communication | 2024 |
| Beyond Drinks Ltd | Wholesale & retail | 2020 |
| Beyond Mega Ltd | Wholesale & retail | 2023 |
| Beyond Partying Ltd | Hospitality | 2025 |
| Beyond Pertoleum Limited | Mining & quarrying | 2020 |
| Beyond the Lights Limited | Professional & scientific | 2019 |
| Beyond the Physical EM Ltd | Education | 2025 |
| Beyond the Physical Ltd | Education | 2020 |
| Beyond the Physical NW Ltd | Education | 2024 |
| Beyond the Sidelines | Health & social care | 2021 |
| Beyoundhunger Limited | Hospitality | 2025 |
| BG Hoyle Agricultural Services Ltd | Administrative & support | 2024 |
| BH Beers Limited | Wholesale & retail | 2024 |
| BH Engage Limited | Professional & scientific | 2018 |
| BH UK Travel Ltd | Transport & logistics | 2024 |
| BH2 Properties Limited | Real estate | 2018 |
| Bhablo Music Entertainment Ltd | Information & communication | 2026 |
| Bhalla Consultants Limited | Professional & scientific | 2004 |
| Bhalla Healthcare Limited | Health & social care | 2023 |
| Bhatti Property Ltd | Real estate | 2024 |
| BHM Properties Ltd | Real estate | 2022 |
| Bhouse Jiu-Jitsu Limited | Education | 2025 |
| Bhullar Bros.Limited | Households | 1964 |
| Bhullar Consultancy Ltd | Other services | 2021 |
| Bhullar Convenience Store Ltd | Wholesale & retail | 2020 |
| Bhullar Developments Limited | Real estate | 1998 |
| Bhullar Group Ltd | Professional & scientific | 2021 |
| Bhullar Medical Ltd | Other services | 2021 |
| Bhullar Smart Investments Ltd | Other services | 2021 |
| Bhullar Trading Ltd | Wholesale & retail | 2014 |
| Bhullars Group of Companies Ltd | Financial services | 2022 |
| BI FA Limited | Wholesale & retail | 2018 |
| Bibi Limited | Real estate | 2018 |
| BID Nominees Limited | Other services | 2020 |
| Big Al's Transport Ltd | Transport & logistics | 2016 |
| Big Billers Ltd | Professional & scientific | 2017 |
| Big Box Gym Limited | Arts & recreation | 2021 |
| Big Box Leisure Club Limited | Arts & recreation | 2023 |
| Big Brother Agency Ltd | Professional & scientific | 2023 |
| Big Desk Ltd | Real estate | 2016 |
| Big in DI Manor Entertainment Ltd | Arts & recreation | 2019 |
| Big Picture Equity Ltd | Financial services | 2025 |
| Big Picture Projects UK Ltd | Professional & scientific | 2022 |
| Big Red Retail Limited | Construction | 2021 |
| Big Rude Food Ltd | Manufacturing | 2020 |
| Big Winner Competition Limited | Hospitality | 2018 |
| Bijoux Housing Ltd | Real estate | 2024 |
| Biju Beauty Limited | Other services | 2012 |
| Bilal Anwar Limited | Health & social care | 2006 |
| Bilgin Ltd | Arts & recreation | 2020 |
| Billiard Supply Company Ltd | Arts & recreation | 2004 |
| BIM Studio Limited | Professional & scientific | 2012 |
| Bims Services Ltd | Wholesale & retail | 2025 |
| Bin-Safe Limited | Manufacturing | 2022 |
| Binary Renewables Ltd | Construction | 2025 |
| Bindoneright Limited | Manufacturing | 2024 |
| Bio-Nordic Ltd | Wholesale & retail | 2011 |
| Biobax Ltd | Manufacturing | 2019 |
| Biogenesis Nutrition Ltd | Wholesale & retail | 2025 |
| Biohack Research Ltd | Wholesale & retail | 2025 |
| Biohive Ltd | Wholesale & retail | 2023 |
| Biotech Talent Solutions Limited | Administrative & support | 2023 |
| Birch Tree (Yorkshire) Limited | Education | 2014 |
| Bird AHU Services Ltd | Manufacturing | 2025 |
| Bird Plumbing Services Limited | Construction | 2025 |
| Birdsall & Armstrong Limited | Professional & scientific | 1998 |
| Birdsedge Plant & Tool Hire Ltd | Wholesale & retail | 2016 |
| Birkbees Day Care Ltd | Education | 2013 |
| Birkbees Group Ltd | Education | 2002 |
| Birkby Bargain & Domestic Appliance Centre Limited | Wholesale & retail | 2014 |
| Birkby Couriers Ltd | Other services | 2024 |
| Birkby Dental Care Limited | Health & social care | 2011 |
| Birkby Hall Motors Limited | Wholesale & retail | 2014 |
| Birklands Consultancy Ltd | Professional & scientific | 2023 |
| Birtwhistle Holdings Limited | Financial services | 2020 |
| Bishtons Painting and Decorating Limited | Extraterritorial | 2019 |
| Bismilla Bakes Ltd | Hospitality | 2026 |
| Bismillah Tarders Ltd | Wholesale & retail | 2026 |