| AZ Care Solutions Limited | Health & social care | 2022 |
| AZA Engineering Limited | Professional & scientific | 2021 |
| Azad Group Malakwal Limited | Manufacturing | 2022 |
| Azaztrade Ltd | Wholesale & retail | 2026 |
| Azizn Properties Ltd | Real estate | 2025 |
| Azizon Ltd | Financial services | 2025 |
| B & L Shaws Properties Limited | Real estate | 2022 |
| B & M Engineering Supplies Limited | Wholesale & retail | 2004 |
| B & N Coaches Limited | Transport & logistics | 2009 |
| B & P Properties (NW) Ltd | Construction | 2016 |
| B 1 Barber (NW) Ltd | Other services | 2026 |
| B and M Properties Lancs Ltd | Real estate | 2025 |
| B Smith Estates Ltd | Real estate | 2020 |
| B Studio Ltd | Manufacturing | 2025 |
| B&S Holdings North East Ltd | Households | 2026 |
| B-H Auctions Limited | Wholesale & retail | 2025 |
| B-R-Y Trades and Labour Ltd | Administrative & support | 2025 |
| B.Grace Services Ltd | Professional & scientific | 2023 |
| B1 Space Ltd | Real estate | 2020 |
| BA Service Centre Ltd | Wholesale & retail | 2024 |
| BA20 UK Ltd | Construction | 2026 |
| Baas Construction Limited | Construction | 1982 |
| Babisil Products (UK) Co. Limited | Wholesale & retail | 2007 |
| Baby Keepsake Company Ltd | Wholesale & retail | 2024 |
| Back Ecke Ltd. | Manufacturing | 2018 |
| Back to Basics Ltd | Wholesale & retail | 2005 |
| Backhold Developments Ltd | Real estate | 2025 |
| Bacup Scaffolding Limited | Construction | 2004 |
| BAD Sheep Limited | Information & communication | 2000 |
| BAD Tattoo Ltd | Information & communication | 2022 |
| Badger Global Consulting Ltd | Professional & scientific | 2018 |
| BAG IT UP Candy Ltd | Wholesale & retail | 2025 |
| Bailey James Racing Ltd | Arts & recreation | 2023 |
| Baker Ball Building & Groundworks Ltd | Administrative & support | 2017 |
| Bakers@Huntleys Ltd | Manufacturing | 2017 |
| Balderstone Properties Ltd | Real estate | 2016 |
| Balticfleet Hotel Ltd | Hospitality | 2011 |
| Bamber & Co Solicitors Ltd | Professional & scientific | 2013 |
| Bambi Bathrooms Ltd | Wholesale & retail | 2025 |
| Bamford GAS Services (Blackburn) Ltd | Other services | 2010 |
| Bandicoot Limited | Information & communication | 2004 |
| Bangladesh Welfare Association Burnley and Pendle | Education | 2008 |
| Bank Self-Storage Burnley Ltd | Real estate | 2020 |
| Banshee Products Ltd | Extraterritorial | 2021 |
| Banu Grill Ltd | Hospitality | 2025 |
| Barabas Medical Services Limited | Health & social care | 2009 |
| Barbell School Limited | Extraterritorial | 2020 |
| Barber Bros Ltd | Other services | 2016 |
| Barcelona Design Works Ltd | Manufacturing | 2025 |
| Barcroft Hall Management Company Limited | Households | 2006 |
| Barden Motor Group Ltd | Wholesale & retail | 2023 |
| Bark Boutique Limited | Other services | 2026 |
| Bark Timber Frame Design Ltd | Extraterritorial | 2022 |
| Barker Engineering Services Ltd | Professional & scientific | 2024 |
| Barker Trade Ltd | Wholesale & retail | 2025 |
| Barkerhouse Tech Limited | Wholesale & retail | 2017 |
| Barley House Developments Ltd | Construction | 2021 |
| Barlik Pizza Limited | Hospitality | 2022 |
| Barnaby Fudge Limited | Wholesale & retail | 2019 |
| Barnham's Blinds & Shutters Limited | Construction | 2021 |
| Baron & Douglas Limited | Real estate | 2014 |
| Baron and Douglas 2 Ltd | Real estate | 2013 |
| Barrier Island Services Limited | Wholesale & retail | 1996 |
| Barrow Estate NW Ltd | Real estate | 2023 |
| Barrow Investments (NW) Ltd | Real estate | 2020 |
| Barrow Joinery Construction Limited | Construction | 2006 |
| Baseball Academy Group Ltd | Education | 2025 |
| Basement Management Ltd | Arts & recreation | 2025 |
| Bashir Italian Hairdresser Limited | Other services | 2025 |
| Basically Cheer CIC | Arts & recreation | 2024 |
| Basically Doors Ltd | Professional & scientific | 2009 |
| Basically Trade Limited | Manufacturing | 2014 |
| Basics Junior Theatre School Ltd | Arts & recreation | 2025 |
| Batch Brew Ltd | Manufacturing | 2011 |
| Bauxcrete Ltd | Construction | 2024 |
| Baxter's Industrial Coating Services Ltd | Construction | 2016 |
| Baylor Limited | Information & communication | 2008 |
| Baytouch Limited | Information & communication | 1996 |
| BB Burnley Ltd | Wholesale & retail | 2026 |
| BB Energi Services Ltd | Other services | 2025 |
| BB Skips Ltd | Extraterritorial | 2019 |
| BB Tyres and Garage Services Ltd | Wholesale & retail | 2021 |
| BB10 Solutions Limited | Professional & scientific | 2023 |
| BB11 Car Sales Ltd | Wholesale & retail | 2025 |
| BBD Pet Products Limited | Wholesale & retail | 2008 |
| BBS Eats Ltd | Hospitality | 2025 |
| BC Joinery (North West) Limited | Construction | 2016 |
| BCB Cleaning Limited | Administrative & support | 2016 |
| BCS AIS U.K. Limited | Financial services | 2017 |
| BCS Automotive Global Limited | Wholesale & retail | 2017 |
| BCS Automotive Interface Solutions Limited | Wholesale & retail | 2017 |
| BCW Aluminium Castings Ltd | Manufacturing | 2015 |
| BCW Design & Manufacture Limited | Manufacturing | 2020 |
| BCW Engineering Ltd | Professional & scientific | 2002 |
| BCW Evolution Coatings Limited | Manufacturing | 2024 |
| BCW Group (Intl) Limited | Manufacturing | 2009 |
| BCW Manufacturing Group Limited | Administrative & support | 2007 |
| BCW Treatments Limited | Manufacturing | 2015 |
| BD Nutrition Group Limited | Real estate | 2017 |
| BDP Group Limited | Wholesale & retail | 2025 |