| Bond-A-Band (TPU) Performance Film & Sheet Limited | Manufacturing | 2013 |
| Bond-A-Band (Transmissions) Limited | Manufacturing | 1972 |
| Bondacre Holdings Limited | Financial services | 2026 |
| Bonham Properties (Yorkshire) Ltd | Real estate | 2024 |
| Bonwick Farm Lettings Limited | Hospitality | 2024 |
| Booking Butler Ltd | Professional & scientific | 2025 |
| Boongate Dickens Ltd | Wholesale & retail | 2025 |
| Booth Town Booze Ltd | Wholesale & retail | 2026 |
| Booth Town Store Ltd | Wholesale & retail | 2023 |
| Boothtown Automotive Limited | Real estate | 2025 |
| Boothtown Car Parts Ltd | Wholesale & retail | 2018 |
| Boothwood Holdings Ltd | Financial services | 2017 |
| Boo’S Properties Ltd | Households | 2025 |
| Borazan Limited | Hospitality | 2025 |
| Bornagainfurniture CIC | Health & social care | 2023 |
| Borough Munch Limited | Hospitality | 2017 |
| BOS (Shared Appreciation Mortgages (Scotland) NO.2) Limited | Extraterritorial | 1997 |
| BOS (Shared Appreciation Mortgages (Scotland) NO.3) Limited | Financial services | 1997 |
| BOS (Shared Appreciation Mortgages (Scotland)) Limited | Extraterritorial | 1996 |
| BOS (Shared Appreciation Mortgages) NO. 1 PLC | Financial services | 1995 |
| BOS (Shared Appreciation Mortgages) NO. 2 PLC | Financial services | 1996 |
| BOS (Shared Appreciation Mortgages) NO. 3 PLC | Financial services | 1997 |
| BOS (Shared Appreciation Mortgages) NO. 4 PLC | Financial services | 1997 |
| BOS (Shared Appreciation Mortgages) NO. 5 PLC | Financial services | 1997 |
| BOS (Shared Appreciation Mortgages) NO. 6 PLC | Financial services | 1997 |
| Boss Macs Ltd | Wholesale & retail | 2023 |
| Botfab Ltd | Manufacturing | 2022 |
| Bottomley Estates Limited | Real estate | 2018 |
| Boulevard Group Ltd | Wholesale & retail | 2020 |
| Boulevard Healthcare Ltd | Wholesale & retail | 2019 |
| Boulevard Medical Practice Ltd | Health & social care | 2019 |
| Bouphe Ltd | Arts & recreation | 2020 |
| BOW Doors Limited | Construction | 2005 |
| BOW Doors Upvc Limited | Construction | 2020 |
| Bowdell Grove Ltd | Wholesale & retail | 2025 |
| Bowes Property Services Limited | Administrative & support | 2017 |
| Bowes Site Services Limited | Professional & scientific | 2015 |
| Bowlinter Ltd | Wholesale & retail | 2016 |
| Bowman Brook Limited | Hospitality | 2024 |
| Box 11 Limited | Wholesale & retail | 2016 |
| Boxstar Education Ltd | Education | 2025 |
| Boyle Construction Limited | Construction | 2019 |
| BPD Brickwork Limited | Construction | 2021 |
| BPL Game & App Development Ltd | Wholesale & retail | 2019 |
| BR Retail Services Limited | Transport & logistics | 2025 |
| BR Technology Solutions Ltd | Information & communication | 2022 |
| Brack Tavern Ltd | Hospitality | 2026 |
| BRAD15 Limited | Other services | 2015 |
| Bradburys of Halifax Ltd | Wholesale & retail | 2013 |
| Bradford Community Fridge CIC | Other services | 2025 |
| Bradford Mould Services Limited | Manufacturing | 2003 |
| Bradford Safe Storage Ltd | Transport & logistics | 2015 |
| Bradley Meadows Management Company Ltd | Households | 2022 |
| Bradley Property Developments Limited | Real estate | 2021 |
| Bradley Strategic Consulting Limited | Administrative & support | 2024 |
| Bradshaw Groundcare Ltd | Administrative & support | 2022 |
| Bradshaw PUB Company Limited | Hospitality | 2009 |
| Bradval Ltd | Construction | 2023 |
| Brambleton Java Ltd | Wholesale & retail | 2025 |
| Brambrook Textiles Ltd | Manufacturing | 2012 |
| Brame Property LLP | | 2018 |
| Branch Busters Tree Services Limited | Construction | 2024 |
| Brandwood Electrical Services Ltd | Construction | 2022 |
| Bratislaua Mini Market Ltd | Wholesale & retail | 2025 |
| Bravion-Le Ltd | Wholesale & retail | 2025 |
| Brayfax Limited | Households | 1981 |
| BRDWY123 Ltd | Other services | 2025 |
| Brdwylsr Ltd | Other services | 2025 |
| Brearley Developments Ltd | Real estate | 2026 |
| Brearley Jones Property Limited | Real estate | 2020 |
| Bretts at NO. 42 Limited | Other services | 2019 |
| Brewvault Ltd | Wholesale & retail | 2026 |
| Brian Slattery Plumbers Limited | Construction | 2019 |
| Brian's Cafe & Desserts Ltd | Wholesale & retail | 2026 |
| Bricknwood Limited | Extraterritorial | 2023 |
| Bridestones Rewilded CIC | Arts & recreation | 2023 |
| Bridge Investments (Halifax) Ltd | Real estate | 2017 |
| Bridge Mill Management Company Limited | Real estate | 1996 |
| Bridge Projects (Yorkshire) Ltd | Manufacturing | 2024 |
| Bridge Timber Holdings Ltd | Professional & scientific | 2022 |
| Bridge Timber Products Limited | Manufacturing | 2002 |
| Bridge-Property-Services Limited | Construction | 2013 |
| Bridgecraft Furniture (UK) Limited | Manufacturing | 2000 |
| Bridgeplan Demolition Limited | Construction | 2013 |
| Bridges Group Services Ltd | Administrative & support | 2021 |
| Bridgeworth Property Limited | Real estate | 2026 |
| Bridle Stile Farm Limited | Real estate | 2002 |
| Bridport Consultancy Limited | Information & communication | 2023 |
| Brierley IP Limited | Professional & scientific | 2019 |
| Brig House Records Limited | Information & communication | 2008 |
| Briggs Properties Ltd | Real estate | 2024 |
| Brighouse and Halifax Model Engineers | Arts & recreation | 2001 |
| Brighouse Assembly Rooms Limited | Real estate | 1905 |
| Bright Future House Ltd | Health & social care | 2024 |
| Bright Leaf Residential Limited | Real estate | 2017 |
| Bright Spark Holdings Ltd | Financial services | 2019 |
| Bright Spark Install Services Ltd | Construction | 2021 |
| Bright Spark Installations West Yorkshire Limited | Construction | 2024 |
| Bright Valley Care Ltd | Health & social care | 2024 |
| Brightleaf Recruitment Limited | Administrative & support | 2010 |