| Banerjee Estates Ltd | Real estate | 2026 |
| Bangla Lounge Ltd | Hospitality | 2025 |
| Bankside Apartments Ltd | Hospitality | 2021 |
| Bantham Properties Limited | Construction | 1999 |
| Baoyang Ltd | Professional & scientific | 2021 |
| Barbara Pointon Facial Aesthetics and Beauty Limited | Other services | 2015 |
| Barbers Shropshire Limited | Other services | 2011 |
| BARBERS@ST17 (Stafford) Limited | Other services | 2017 |
| Barbie Executive Travel Ltd | Administrative & support | 2023 |
| Barcare Supreme Holdings Limited | Administrative & support | 2011 |
| Bargain Bikes Ltd | Wholesale & retail | 2023 |
| Bargain Booz Ltd | Wholesale & retail | 2023 |
| Bargate Properties Limited | Construction | 2006 |
| Barker & Browns Limited | Wholesale & retail | 2024 |
| Barker-Hall Property Ltd | Households | 2019 |
| Barkin Barkers Limited | Other services | 2017 |
| Barn Rise Residential Ltd | Real estate | 2021 |
| Barnett Ratcliffe Partnership Limited | Professional & scientific | 1999 |
| Barrington Garden Company Limited | Construction | 2002 |
| Barrs Electrical Services Ltd | Construction | 2011 |
| Bars WE Create Ltd | Hospitality | 2019 |
| Barshire House Management Company Limited | Households | 2006 |
| Based Lettings Limited | Real estate | 2024 |
| Basha Export and Import Limited | Wholesale & retail | 2024 |
| Basileus Venture Investments Limited | Real estate | 2024 |
| Basma General Trading Company., Ltd | Wholesale & retail | 2023 |
| Basques (Midlands) Limited | Financial services | 2024 |
| Bastacom Ltd. | Extraterritorial | 2024 |
| Bastore Trad Ltd | Wholesale & retail | 2025 |
| Batchelor and Associates Community Economics Ltd | Professional & scientific | 2022 |
| Bates Clear 2 Hear Ltd | Health & social care | 2025 |
| Batigo Ltd | Transport & logistics | 2021 |
| Batskater Ltd | Arts & recreation | 2025 |
| Bawaji Store Ltd | Wholesale & retail | 2026 |
| Bay Drywall and Insulation Supplies Limited | Wholesale & retail | 2022 |
| Bay Staffing Limited | Financial services | 2023 |
| Bayliss Fire, Security & Electrical Limited | Construction | 2025 |
| BB Blades Ltd | Other services | 2025 |
| BBN Nexus Limited | Professional & scientific | 2020 |
| BCO Systems Ltd | Professional & scientific | 2017 |
| BCR Insolvency Limited | Professional & scientific | 2002 |
| Bcuoz Ltd | Wholesale & retail | 2025 |
| BE Smart Design Limited | Professional & scientific | 2012 |
| BEA Fire Safety Limited | Professional & scientific | 2003 |
| BEA2 Ltd | Professional & scientific | 2022 |
| Beacon Farm Management Limited | Real estate | 2009 |
| Beacon Sport & Fitness Limited | Administrative & support | 2017 |
| Beacon Storage Limited | Administrative & support | 2018 |
| Beaconside Surgery GPF Limited | Professional & scientific | 2013 |
| Beaconwood College Limited | Administrative & support | 2017 |
| Beaconwood Hall Limited | Administrative & support | 2017 |
| Bear Bars Ltd | Hospitality | 2023 |
| Bear Hugs and Eskimo Kisses Limited | Manufacturing | 2016 |
| Bear HUT Brownies Limited | Wholesale & retail | 2021 |
| Beard & Glasses Productions Limited | Administrative & support | 2023 |
| Beartec Ltd | Financial services | 2026 |
| Beauty Foods Limited | Extraterritorial | 2010 |
| Beauty for Every Brain Limited | Professional & scientific | 2025 |
| Bechance Planning Company Limited | Professional & scientific | 2015 |
| Beckett & Beckett Real Estate Ltd | Real estate | 2024 |
| Beckett Build & Design Limited | Construction | 2003 |
| Beckett Family Holdings Limited | Financial services | 2026 |
| Bedwood Estates Ltd | Real estate | 2025 |
| Beechcroft Grange (Stafford) Management Limited | Households | 2003 |
| Beechgrove Property Investments Limited | Real estate | 2013 |
| Beechwater Ltd | Administrative & support | 2014 |
| Beeyawn Ltd | Information & communication | 2021 |
| Beffcote Dairy | Agriculture & fishing | 2025 |
| Beijing Bitlulu Technology Co., Ltd | Wholesale & retail | 2021 |
| Beikotto Management Limited | Wholesale & retail | 2021 |
| Beirun Import&Export Co., Ltd | Extraterritorial | 2020 |
| Bejan Limited | Hospitality | 2018 |
| BEL Classics Limited | Wholesale & retail | 1999 |
| Beley Ltd | Manufacturing | 2023 |
| Belgium Nordic Agrochemical Co., Ltd. | Wholesale & retail | 2025 |
| Bell Real Estate Limited | Real estate | 1995 |
| Bell Renovations Limited | Construction | 2015 |
| Bella Capital Holdings Limited | Financial services | 2025 |
| Bellamy Projects Limited | Transport & logistics | 2019 |
| Bellazenhealth Ltd | Financial services | 2025 |
| Belle & Co Boutique Ltd | Wholesale & retail | 2024 |
| Bellfields Farm Management Limited | Households | 2010 |
| BEM Consultant Engineers Limited | Professional & scientific | 2016 |
| BEN Baggott Limited | Other services | 2018 |
| Benjen Trees Ltd | Administrative & support | 2023 |
| Bennett's Travel (Cranberry) Services Limited | Professional & scientific | 2003 |
| Bent's Limited | Hospitality | 2014 |
| Benton Memorials Limited | Manufacturing | 2007 |
| Berefield Properties Ltd | Real estate | 2021 |
| Berners Marketing Limited | Professional & scientific | 2004 |
| Berp Consulting Limited | Information & communication | 2023 |
| Beso Ltd | Wholesale & retail | 2022 |
| Bespoke Luxury UK Ltd | Construction | 2017 |
| Bespoke Training and Education Ltd | Education | 2014 |
| Best Breeds Dogs Limited | Agriculture & fishing | 2018 |
| Best Buy Purchase Ltd | Wholesale & retail | 2026 |
| Best Communications Technology Co., Ltd | Professional & scientific | 2016 |
| Best Land Cultural Media Ltd | Wholesale & retail | 2025 |
| Best Textiles Co., Ltd | Extraterritorial | 2011 |
| Betterserve UK Limited | Wholesale & retail | 1999 |