| Batdale Developments Limited | Construction | 1988 |
| BATHROOMS4U Ltd | Construction | 2022 |
| Bavi DE Limited | Wholesale & retail | 2018 |
| Bayt AL Noor Limited | Real estate | 2023 |
| Bbathrooms Ltd | Wholesale & retail | 2019 |
| Bd.Dobrze Limited | Transport & logistics | 2026 |
| Bdct Ltd | Wholesale & retail | 2013 |
| Bean & BUN Ltd | Hospitality | 2022 |
| Beau Electrical Assessment Limited | Education | 2020 |
| Beauty Accessories Ltd | Other services | 2018 |
| Beauty and the Beds Newton Ltd | Other services | 2026 |
| Beauty Porter Ltd | Other services | 2018 |
| Bebtao Limited | Wholesale & retail | 2025 |
| BEC Arena Ltd | Administrative & support | 2017 |
| Beckhams Limited | Real estate | 2008 |
| Becki BIN Bags Ltd | Wholesale & retail | 2025 |
| Bedroom Studio Ltd | Wholesale & retail | 2025 |
| BEE Craft Design Ltd | Manufacturing | 2025 |
| Beerogi Cafe Ltd | Hospitality | 2023 |
| Beeus Ltd | Wholesale & retail | 2024 |
| Bella Boutique Ltd | Wholesale & retail | 2024 |
| Bella Kopf Trading Ltd | Other services | 2015 |
| Belle Vale Mobiles Limited | Wholesale & retail | 2025 |
| Bellevarde Investments Limited | Real estate | 2021 |
| Belrose Enterprises Ltd | Real estate | 2025 |
| Beluru Universal Ltd | Wholesale & retail | 2025 |
| Benchmaster Limited | Manufacturing | 1986 |
| Benson HC Ltd | Health & social care | 2018 |
| Bercool Comp Limited | Transport & logistics | 2025 |
| Berkeley Street MOT Station Ltd | Wholesale & retail | 2026 |
| Best Halal Meat Supply Ltd | Wholesale & retail | 2021 |
| Best Sofa Limited | Manufacturing | 2026 |
| BEST4WHEELS Ltd | Wholesale & retail | 2025 |
| Bestalinks (Dukinfield) Limited | Real estate | 2003 |
| Bestalinks Limited | Manufacturing | 1972 |
| Beta RAY Design Limited | Professional & scientific | 2016 |
| Beta Transport Ltd | Transport & logistics | 2025 |
| Bhangrabands.Com Limited | Other services | 2010 |
| Bibi Aesthetics Ltd | Other services | 2025 |
| Big Blue Skip Hire Ltd | Water & waste | 2025 |
| Big View Cafe Ltd | Hospitality | 2025 |
| Bigsist Hair Africana Ltd | Hospitality | 2026 |
| Bigsist Icare Ltd | Health & social care | 2026 |
| Bike School Limited | Education | 2000 |
| Bikes and Bits (MCR) Ltd | Wholesale & retail | 2020 |
| Bikes and Bits Breakers Ltd | Wholesale & retail | 2023 |
| BIN and Collected Recycling Ltd | Water & waste | 2020 |
| BIN Haider Group Ltd | Real estate | 2017 |
| Bisconsole Ltd | Information & communication | 2025 |
| Bistro in Ltd | Hospitality | 2026 |
| BIZ Goal Limited | Administrative & support | 2023 |
| BJC Investments Ltd | Real estate | 2023 |
| Black Eagle Sales Ltd | Wholesale & retail | 2023 |
| Blanc & White Ltd | Wholesale & retail | 2025 |
| Blessedsolomon Ltd | Wholesale & retail | 2020 |
| Blessedsolomon Properties Ltd | Real estate | 2025 |
| Blij Group Ltd | Construction | 2024 |
| Blij Limited | Construction | 2019 |
| Blockdale Properties Ltd | Other services | 2023 |
| Bloco Sorridente CIC | Education | 2026 |
| Bloom Beauty and Aesthetics Academy Ltd | Education | 2023 |
| Bloom Franchises Limited | Health & social care | 2018 |
| Bloom Toddler Classes Limited | Health & social care | 2022 |
| Blooming Future Investment Ltd | Wholesale & retail | 2025 |
| Blue Bean Medical Ltd | Wholesale & retail | 2012 |
| Blue Bell Accident Management (South) Ltd | Administrative & support | 2019 |
| Blue Elite Security Ltd | Administrative & support | 2023 |
| Blue J Catering Limited | Hospitality | 2011 |
| Blue Market 1 Ltd | Wholesale & retail | 2025 |
| Blue Techno Ltd | Wholesale & retail | 2025 |
| Blueedge Facilities Ltd | Administrative & support | 2025 |
| Blueflash Reactor Engineering Ltd | Professional & scientific | 2020 |
| Blueline Plumbing Services Ltd | Construction | 2018 |
| Blueprint Packaging Limited | Wholesale & retail | 2000 |
| BM Signalling Solutions Ltd | Manufacturing | 2023 |
| Bmac Properties Ltd | Households | 2025 |
| BML Waste Removals Ltd | Water & waste | 2023 |
| BMM Cleaning and Shine Limited | Administrative & support | 2021 |
| BNB Solution Ltd | Wholesale & retail | 2021 |
| BOB DA Builders Ltd | Construction | 2025 |
| Boboz Limited | Wholesale & retail | 2025 |
| Bodenham Development Co. Ltd | Information & communication | 2017 |
| Body & Mind Integrated Health Ltd | Health & social care | 2017 |
| Bogumska’S Pizza Co Ltd | Hospitality | 2019 |
| Bold Decor Ltd | Wholesale & retail | 2025 |
| Bond Street Shoe Co (Ashton) Ltd | Wholesale & retail | 2018 |
| Boodle ST Auto Repairs Limited | Wholesale & retail | 2014 |
| Bookmyhouse Ltd | Real estate | 2025 |
| Boop Group Ltd | Financial services | 2026 |
| Booth Street 15 (A-U-L) Management Company Limited | Real estate | 2023 |
| Boozemart Convenience Store Ltd | Wholesale & retail | 2023 |
| Born 2 Bounce Ltd | Arts & recreation | 2021 |
| Borodajko LLP | | 2024 |
| Borthwick Group Holding Limited | Financial services | 2026 |
| Boujee Enterprise Ltd | Wholesale & retail | 2022 |
| Boujee Holdings Ltd | Wholesale & retail | 2022 |
| Boundary Arts Centre Ltd | Education | 2018 |
| Bower Properties Limited | Real estate | 2023 |
| Bowley & Sons Funeral Directors Ltd | Other services | 2021 |
| Bown Electrical Ltd | Construction | 2021 |