| Autoyours Ltd | Information & communication | 2026 |
| Avanti Coffee House Limited | Hospitality | 2012 |
| Aveyard Design Associates Ltd | Professional & scientific | 2025 |
| Aviary Productions Limited | Information & communication | 2012 |
| AVP Property Solutions Limited | Real estate | 2026 |
| AW Aesthetics Ilkley Limited | Other services | 2026 |
| AW BIN Shabib Investment Ltd | Financial services | 2024 |
| Awan Brothers Limited | Wholesale & retail | 2012 |
| Awooga Ltd | Professional & scientific | 2011 |
| AWS Europe Ltd | Wholesale & retail | 2025 |
| Axiom Technology Limited | Information & communication | 2014 |
| Azad Tandoori Ltd | Hospitality | 2018 |
| B&C Property Holdings Ltd | Real estate | 2026 |
| B2E Limited | Transport & logistics | 2008 |
| B4UGO Limited | Health & social care | 2004 |
| Baht at Windows Ltd | Administrative & support | 2025 |
| Bakker Property Investments Ltd | Real estate | 2025 |
| Balay Hills Properties Ltd | Real estate | 2025 |
| Ballachree Limited | Wholesale & retail | 1978 |
| Bamboobeautiful Ltd | Wholesale & retail | 2020 |
| BAMFORD4 Ltd | Real estate | 2024 |
| Bamfordowntheengineering Ltd | Professional & scientific | 2026 |
| Bangerz 'N' Brewz Ltd | Hospitality | 2018 |
| Bankhead (Eldwick) Limited | Professional & scientific | 2017 |
| Bankhead (Guiseley) Limited | Construction | 2023 |
| Bankhead (Ilkley) Limited | Real estate | 2024 |
| Bankhead (Otley) Limited | Real estate | 2024 |
| Bankhead (Ramsdens) Limited | Construction | 2020 |
| Bankhead (Willow House) Limited | Real estate | 2019 |
| Bankhead 16 Limited | Construction | 2018 |
| Bankhead 19 Limited | Professional & scientific | 2016 |
| Bankhead Group Limited | Real estate | 2013 |
| Barbarella Hair Ltd | Other services | 2011 |
| Bargain MAC World Ltd | Wholesale & retail | 2024 |
| Barnetts (Ilkley) Limited | Other services | 2007 |
| Barrett Laycock Associates Limited | Professional & scientific | 2024 |
| Barriston Ltd | Construction | 2017 |
| Barry Enterprise Limited | Hospitality | 2021 |
| Bates Technology Holdings Limited | Information & communication | 2022 |
| Bathe of Wharfedale Limited | Wholesale & retail | 2021 |
| Batproc Property Ltd | Construction | 2025 |
| BB Quality Inspections Ltd | Professional & scientific | 2023 |
| BCT Care Services Ltd | Health & social care | 2014 |
| BE More Ardent Limited | Professional & scientific | 2022 |
| Beagle House Properties Ltd | Real estate | 2024 |
| Beamost Engineering Ltd | Information & communication | 2026 |
| Beamost Ltd | Financial services | 2025 |
| Beamsley Investments Limited | Real estate | 2025 |
| Beau Bijou Design Ltd | Wholesale & retail | 2024 |
| Beauty in Bloom Yorkshire Ltd | Other services | 2022 |
| Beckside Properties (Yorkshire) Limited | Real estate | 2003 |
| Becoming YOU With Kate Ltd | Health & social care | 2026 |
| Belgrave & Bolton Limited | Construction | 2025 |
| Belle VUE (Ilkley) Management Company Limited | Households | 2005 |
| Belle VUE Court Ilkley Limited | Households | 2005 |
| BEN Horrix Technology Limited | Information & communication | 2015 |
| BEN Rhydding Sports Club (2017) Ltd | Arts & recreation | 2017 |
| BEN Rhydding Sports Club Limited | Arts & recreation | 1990 |
| Bene DC Ltd | Financial services | 2016 |
| Bennett Technology Consulting Ltd | Information & communication | 2025 |
| Bermuda Digital Print Limited | Manufacturing | 2005 |
| Bespoke Roof Safety Ltd | Other services | 2017 |
| Bettortainment Limited | Information & communication | 2025 |
| Beyond 3 Limited | Real estate | 2025 |
| Beyond Property Developments Limited | Construction | 2024 |
| BEYOND2 Ltd | Real estate | 2019 |
| BGA Property Limited | Real estate | 2021 |
| Bgcy Events Limited | Education | 2024 |
| BGM Logistics Consultants Limited | Transport & logistics | 2013 |
| Billington Strength & Fitness Limited | Arts & recreation | 2012 |
| BINGLES1 Ltd | Hospitality | 2021 |
| Bini Brew Co Ltd | Manufacturing | 2020 |
| Biomedical Nutrition Ltd | Wholesale & retail | 2014 |
| Bishopdyke Estates (NO.1) LLP | | 2011 |
| Bishopdyke Estates (NO.2) LLP | | 2013 |
| Bitlantis Ltd | Information & communication | 2025 |
| BIW Ltd | Administrative & support | 2023 |
| Bizsave Experts Ltd | Professional & scientific | 2025 |
| Bjls Washington Limited | Construction | 2018 |
| BKP Property Management RTM Company Limited | Households | 2007 |
| Black FOX Garden Services Ltd | Administrative & support | 2025 |
| Black INK Soup Limited | Professional & scientific | 2017 |
| Black Moon Guitars Ltd | Manufacturing | 2014 |
| Blacksco 36 Limited | Financial services | 2014 |
| Blaine Richard Associates Ltd | Professional & scientific | 2012 |
| Blankspace Studio Ltd | Wholesale & retail | 2026 |
| Blaze Software Ltd | Information & communication | 2013 |
| Blencathra Alloys Limited | Wholesale & retail | 2003 |
| Blencathra Industries Limited | Wholesale & retail | 2010 |
| Blencathra Metals Limited | Wholesale & retail | 2020 |
| Blesshome Limited | Construction | 1997 |
| Bloomfields Fine Jewellers Limited | Administrative & support | 2002 |
| Bloxx Homes Ltd | Real estate | 2026 |
| Blue and Green Lifestyle Ltd | Wholesale & retail | 2011 |
| Blue Cuckoo Farm Ltd | Hospitality | 2025 |
| Blue Horizon IT Consultancy Ltd | Information & communication | 2014 |
| Blue Ice Limited | Construction | 1997 |
| Blue Strawberry Mortgages Limited | Financial services | 2014 |
| Blue String Properties Ltd | Real estate | 2006 |
| Bluebell Valley Property Ltd | Real estate | 2022 |