| BE Kind Foundation | Health & social care | 2014 |
| BE Stunning TOO Limited | Other services | 2019 |
| Beagle Power Limited | Information & communication | 2025 |
| Beanlazy Limited | Wholesale & retail | 2011 |
| Beardwood Property Ltd | Real estate | 2019 |
| Beast Burger Group Limited | Hospitality | 2021 |
| Beast Burger Keelby Ltd | Hospitality | 2021 |
| Beauchamp Investment Group Ltd | Financial services | 2018 |
| Becca WHO Ltd | Professional & scientific | 2024 |
| BEE YOU Coaching Ltd | Other services | 2025 |
| Beer Run Limited | Hospitality | 2007 |
| Bees Boutique Online Ltd | Wholesale & retail | 2019 |
| Beezzy Handz Ltd. | Transport & logistics | 2007 |
| Behind the Sofa - Cleaning Services Ltd | Administrative & support | 2025 |
| Beholden Investments Limited | Health & social care | 2022 |
| Bella Rose Bathrooms Ltd | Wholesale & retail | 2021 |
| Bellann Board & Packaging Co.Limited | Manufacturing | 2007 |
| Bellann Packaging Limited | Administrative & support | 2005 |
| Bellas Bakes Ltd | Hospitality | 2018 |
| Bellerby's Holiday Homes Ltd | Administrative & support | 2024 |
| Bellmont 100 Ltd | Other services | 2019 |
| Bellyflop TV Limited | Administrative & support | 2007 |
| Beloved Pets Limited | Other services | 2023 |
| Bemis Limited | Manufacturing | 1967 |
| BEN Durkin Limited | Information & communication | 2018 |
| BEN Shaw Training Ltd | Education | 2014 |
| BEN Slater Glazing Limited | Construction | 2022 |
| Bennett LEE Ltd | Construction | 2018 |
| Benoticed Signs Ltd | Administrative & support | 2020 |
| Bentley Wood Farm Limited | Health & social care | 2021 |
| Bentley Wood Michelle Green Limited | Health & social care | 2023 |
| Berry Developments ( Fence ) Ltd | Real estate | 2026 |
| Besa Accounting Ltd | Professional & scientific | 2018 |
| Besides Accounting Ltd | Professional & scientific | 2025 |
| Bespoke 1 Electrical Ltd | Construction | 2024 |
| Bespoke Eco Ltd | Construction | 2024 |
| Bespoke Frames Limited | Construction | 2020 |
| Bespoke School Uniform Ltd | Wholesale & retail | 2023 |
| Bespoke Wallpaper Ltd | Manufacturing | 2025 |
| Best Choice Homes Ltd | Construction | 2017 |
| Best One Brunshaw Ltd | Wholesale & retail | 2022 |
| Best One Burnley Convenience Store Ltd | Wholesale & retail | 2026 |
| Best One Singh Stores Limited | Wholesale & retail | 2012 |
| Best-One Burnley Ltd | Wholesale & retail | 2024 |
| Bettamix Concrete Limited | Manufacturing | 2009 |
| Bettamix Properties Limited | Financial services | 2015 |
| Bettany Flow Lean Consultancy Ltd | Professional & scientific | 2026 |
| Betterdays Supplements Limited | Wholesale & retail | 2026 |
| Betterlife Group Ltd | Wholesale & retail | 2020 |
| Bewin Retail Ltd | Wholesale & retail | 2024 |
| BFC Memorial Garden Co. C.I.C. | Arts & recreation | 2018 |
| Bfcitc Facilities (Enterprises) Ltd | Education | 2017 |
| BG Real Estate Ltd | Real estate | 2018 |
| BGB Properties Ltd | Real estate | 2020 |
| Bgobeys Ltd | Other services | 2025 |
| BGP Food Ltd | Professional & scientific | 2024 |
| BHB Plant Limited | Construction | 2023 |
| BHC Access Ltd | Administrative & support | 2014 |
| Bhorvi Limited | Wholesale & retail | 2025 |
| BHP UK Automotive Limited | Professional & scientific | 2011 |
| BIB and Tucker Apparel Ltd | Wholesale & retail | 2013 |
| BIB Packaging Limited | Manufacturing | 2022 |
| Bibirenovation Ltd | Construction | 2025 |
| Big Buns Burgers & Chicken Ltd | Hospitality | 2025 |
| Big B’S Burnley Ltd | Hospitality | 2021 |
| Big Light on C.I.C. | Other services | 2010 |
| Biizz Shiz Limited | Wholesale & retail | 2026 |
| Bill Breakers Ltd | Professional & scientific | 2025 |
| Billingshurst Dairies Ltd | Wholesale & retail | 2020 |
| Billington Developments Ltd | Construction | 2019 |
| Billington Motor Group Ltd | Wholesale & retail | 2019 |
| Billy & Jess's Home Improvements Ltd | Real estate | 2020 |
| Billy's Home Improvements Ltd | Construction | 2017 |
| Biometrix Limited | Real estate | 2001 |
| Bioscience Labs Ltd | Wholesale & retail | 2026 |
| Birds Fish and Chip Shop Limited | Hospitality | 2017 |
| Bishop Embellishments Limited | Manufacturing | 2017 |
| Bishop's Dream Clean Ltd | Administrative & support | 2025 |
| Bistro at Bowland Forest Ltd | Hospitality | 2025 |
| Bites & Delights Ltd | Hospitality | 2025 |
| Bits and Bags Co Ltd | Manufacturing | 2022 |
| BJC Engineering Consultants Ltd | Professional & scientific | 2024 |
| BJC Property Group Ltd | Real estate | 2025 |
| BKH Sports Nexus Ltd | Professional & scientific | 2025 |
| BL Group NW Ltd | Financial services | 2017 |
| Black Label Homes Limited | Extraterritorial | 2014 |
| Black River Engineering Ltd | Professional & scientific | 2026 |
| Black Rose Inns Ltd | Hospitality | 2016 |
| Black TIP Social Media Marketing Limited | Professional & scientific | 2018 |
| Blackburn Academy of Martial Arts CIC | Arts & recreation | 2016 |
| Blackburn Distributions Ltd. | Manufacturing | 2022 |
| Blackburn Skips Limited | Water & waste | 2014 |
| Blackdrive Ltd | Wholesale & retail | 2026 |
| Blackston Communications Limited | Information & communication | 2018 |
| Blade Tooling Company Limited | Manufacturing | 2011 |
| Blagbrough Contracts Ltd. | Construction | 2012 |
| Blak Bear Creative Limited | Professional & scientific | 2018 |
| Blind Stop Limited | Wholesale & retail | 2025 |
| Bling Nails & Spa Burnley Limited | Other services | 2026 |
| Bloc Shading Ltd | Construction | 2023 |