| Baby Squids West Yorkshire Limited | Education | 2025 |
| Badari Limited | Real estate | 2019 |
| Bailey Earnshaw Investments Limited | Real estate | 2024 |
| Balance Accountants Limited | Professional & scientific | 1999 |
| Balance Compliance Ltd | Information & communication | 2025 |
| Balloon People (Huddersfield) Limited | Wholesale & retail | 2009 |
| Bambuko Ltd | Wholesale & retail | 2018 |
| Bamford Architectural Ltd. | Professional & scientific | 2014 |
| Bamforth Leisure Consultancy Limited | Professional & scientific | 2022 |
| Bamforth Leisure Limited | Hospitality | 2020 |
| Bando Famous Limited | Wholesale & retail | 2025 |
| Bandshire Limited | Administrative & support | 1998 |
| Bank Top Lane Management Limited | Households | 2018 |
| Bankfield Property Services Ltd | Extraterritorial | 2021 |
| Bankgate Self Storage Ltd | Real estate | 2025 |
| Barkeley’S Pet Services Ltd | Other services | 2025 |
| Barnaby's Day Nursery Limited | Education | 2010 |
| Barnsley Beer Company Limited | Wholesale & retail | 2009 |
| Barnsley Tanning Ltd | Other services | 2024 |
| Barrow Homes Ltd | Construction | 2006 |
| Bartholet Limited | Professional & scientific | 2021 |
| Barton Marks Ltd | Professional & scientific | 2011 |
| Basegreen Academy Ltd | Health & social care | 2004 |
| Bassett Physiotherapy Ltd | Health & social care | 2024 |
| Bastion (UK) Ltd | Real estate | 2011 |
| BBT Group EOT Limited | Administrative & support | 2022 |
| BBT Group Holdings Limited | Financial services | 2021 |
| BBT Wealth Limited | Professional & scientific | 2021 |
| BDK Property Services Ltd | Construction | 2024 |
| BDV Project Ltd | Wholesale & retail | 2022 |
| BEA Film Ltd | Information & communication | 2015 |
| Beanstalk HR Ltd | Professional & scientific | 2022 |
| Beauty Matters Garforth Limited | Other services | 2014 |
| Beauty Matters Rothwell Limited | Other services | 2012 |
| Bebbington Brumby Townend Group Limited | Extraterritorial | 2007 |
| Beckle Consultancy Services Ltd. | Administrative & support | 2012 |
| Beckle Property Investments and Management Ltd | Real estate | 2017 |
| Bedtimeflirt Limited | Manufacturing | 2004 |
| Beech Grove Consulting Ltd | Professional & scientific | 2025 |
| Beer Badges Ltd | Manufacturing | 2024 |
| Beewell Partners Ltd | Information & communication | 2024 |
| Bellgreave Properties Limited | Other services | 1986 |
| Belvoir Homecare Limited | Health & social care | 2011 |
| BEN Beardsall Limited | Wholesale & retail | 2006 |
| Bennett & Walsh (Properties) Limited | Real estate | 2017 |
| Best YET Bodies Ltd. | Education | 2021 |
| Bethan Rose Limited | Other services | 2023 |
| Between the Lights Limited | Information & communication | 2021 |
| Beyond Collective Limited | Information & communication | 2025 |
| BFA Property Developments Limited | Construction | 2018 |
| Bfan CIC | Education | 2026 |
| Big I Consulting Limited | Professional & scientific | 2013 |
| Bilberry Ltd | Real estate | 2023 |
| Bilgola Consultancy Limited | Administrative & support | 2017 |
| Birch Woodhead Property Limited | Real estate | 2017 |
| Bismillah Medina (Holmfirth) Limited | Hospitality | 2024 |
| Black Dagger Portfolio Ltd | Real estate | 2016 |
| Black Hill Conversions Ltd | Manufacturing | 2025 |
| Black Hill Leisure Supplies Ltd | Wholesale & retail | 2024 |
| Black INK HR Ltd | Administrative & support | 2019 |
| Black Rock Security and FM Limited | Wholesale & retail | 2022 |
| Bleak House (Coach House) Limited | Professional & scientific | 2012 |
| Blended Learning Limited | Professional & scientific | 2002 |
| Blik Limited | Professional & scientific | 2005 |
| Bloc Holmfirth Ltd | Hospitality | 2023 |
| Blossom Business Growth Limited | Professional & scientific | 2021 |
| Blue EGG Associates Limited | Professional & scientific | 2014 |
| Blue Star 100 Limited | Real estate | 2022 |
| Blue Star 100 Properties Limited | Real estate | 2023 |
| Blue Star 200 Limited | Real estate | 2022 |
| Bluebell Trading UK Limited | Manufacturing | 2005 |
| Bluebird Bakery Holmfirth Ltd | Wholesale & retail | 2021 |
| Blueprint Promotions Limited | | 1988 |
| Blueshellcollectibles Ltd | Wholesale & retail | 2025 |
| BLX Limited | Information & communication | 2013 |
| BLX Property Limited | Real estate | 2017 |
| BM Media Studio Ltd | Professional & scientific | 2025 |
| Bmax Publishing Services Ltd | Administrative & support | 2016 |
| BMT Architectural Services Ltd | Professional & scientific | 2021 |
| BNE Security Systems Limited | Administrative & support | 2023 |
| BNF Properties Limited | Real estate | 2021 |
| Bodacoms Limited | Information & communication | 2019 |
| Bokeh Ltd | Professional & scientific | 2023 |
| BOND180 Limited | Information & communication | 2019 |
| Bonito PAN Asian Limited | Hospitality | 2025 |
| Bonson Estates Limited | Real estate | 2023 |
| Bontexgeo UK Holding Limited | Financial services | 2021 |
| Boothings Ltd | Wholesale & retail | 2022 |
| Booti Ltd | Wholesale & retail | 2025 |
| Bosco Catering Limited | Hospitality | 2024 |
| Bowe IQ Limited | Information & communication | 1996 |
| Boxberrie Ltd | Professional & scientific | 2004 |
| BR Electromotive Ltd | Manufacturing | 2021 |
| Bradcott Limited | Real estate | 2014 |
| Bradford VEG Prep Ltd | Hospitality | 2016 |
| Bradley Woods Management Company (NO.2) Limited | Real estate | 1990 |
| Braise Foods Limited | Hospitality | 2024 |
| Bramleybrown Ltd | Professional & scientific | 2025 |
| Brammall Roofing Limited | Construction | 2021 |
| Brand Craft Limited | Manufacturing | 2023 |