| BIO - Prevention Limited | Construction | 2001 |
| Biolaoluwatito Ltd | Wholesale & retail | 2019 |
| Biopoise Consulting Ltd | Professional & scientific | 2018 |
| Biotech Global Limited | Wholesale & retail | 2021 |
| Bire Ltd | Information & communication | 2020 |
| Biringh Group (UK) Ltd | Professional & scientific | 2022 |
| Biringh Transport Ltd | Wholesale & retail | 2022 |
| Biritale Ltd | Hospitality | 2025 |
| Biscayne Limited | Professional & scientific | 2015 |
| Bishal Trading UK Ltd | Administrative & support | 2023 |
| Bishwanath Daffodil Association-Uk | Education | 2020 |
| Biskol Services Limited | Manufacturing | 1999 |
| Bismillah Fruit& Vegetable Limited | Wholesale & retail | 2024 |
| Bismillah HMC Catering Limited | Other services | 2017 |
| Bissilviu Ltd | Construction | 2018 |
| BIT Wave Ltd | Wholesale & retail | 2024 |
| Bitbudz Exim Ltd | Wholesale & retail | 2026 |
| Bitsnap Ltd | Information & communication | 2026 |
| Bizcom Ltd | Wholesale & retail | 2025 |
| BIZZ21ACADEMY Limited | Education | 2025 |
| BJ Construct Ltd | Construction | 2024 |
| Bjeight Multiservices Ltd | Transport & logistics | 2026 |
| BJJ Limited | Wholesale & retail | 2022 |
| BK Construction Solutions Ltd | Construction | 2023 |
| BK IT Solutions Ltd | Information & communication | 2016 |
| BK Partybazaar Ltd | Other services | 2018 |
| BKT Digital Ltd | Information & communication | 2025 |
| Bkzh Ltd | Wholesale & retail | 2023 |
| Black Cat Strategic Projects Ltd | Financial services | 2026 |
| Black Eagle Construction Ltd | Construction | 2018 |
| Black Egrets Limited | Information & communication | 2024 |
| BLACKSHEEP20 Ltd | Transport & logistics | 2020 |
| Blackstone Construction & Management Limited | Real estate | 2024 |
| Blackstone Ltd | Wholesale & retail | 2020 |
| Blanca Cafe Ltd | Hospitality | 2024 |
| Blessed Heritage Ltd | Real estate | 2026 |
| Blessed J Limited | Health & social care | 2023 |
| Blessed Treasures Services Limited | Education | 2021 |
| Blesseddavtoy Ltd | Health & social care | 2011 |
| Blessings Snacks Ltd | Hospitality | 2013 |
| Blessings Ventures Limited | Other services | 2014 |
| Blesson Service Ltd | Construction | 2019 |
| Blicez Ltd | Wholesale & retail | 2026 |
| Blink Logistic Services Ltd | Transport & logistics | 2026 |
| Blinks Tropical Bar Ltd | Hospitality | 2021 |
| Blissfullodging Limited | Hospitality | 2021 |
| Bloc Peformance Ltd | Wholesale & retail | 2026 |
| Bloc Unity Ltd | Wholesale & retail | 2025 |
| Bloodgang Studioz UK Ltd | Information & communication | 2022 |
| Bloom Fountain Evolving Homes Ltd | Health & social care | 2025 |
| Bloomfield Digital Limited | Information & communication | 2025 |
| Bloomfield Healthcare Services Ltd | Health & social care | 2023 |
| Bloomscare Ltd | Health & social care | 2019 |
| Blossom Bay Nursery Ltd | Education | 2024 |
| Blossom Brows and Beauty Ltd | Other services | 2026 |
| Blossom Garden Pro Limited | Arts & recreation | 2019 |
| Blossoming Investment Limited | Wholesale & retail | 2020 |
| Bloverse Ltd | Information & communication | 2018 |
| Blue Aria Estates Ltd | Real estate | 2026 |
| Blue Birds Jeans Ltd | Wholesale & retail | 2018 |
| Blue Clear Estate Ltd | Real estate | 2026 |
| Blue Harbor Marketing Ltd | Wholesale & retail | 2026 |
| Blue Haven Commerce Ltd | Wholesale & retail | 2026 |
| Blue Haven Traders Ltd | Wholesale & retail | 2026 |
| Blue Realm Ventures Ltd | Financial services | 2021 |
| Blue Sea 767 Limited | Hospitality | 2021 |
| Blue Sea Development Holdings Limited | Financial services | 2023 |
| Blue Sea Development Limited | Hospitality | 2011 |
| Blue Shield Protection UK Ltd | Administrative & support | 2026 |
| Blue Sky Medical Limited | Health & social care | 2019 |
| Blue Sky Training Academy Ltd | Public administration | 2025 |
| Blue Terrain Ltd | Wholesale & retail | 2020 |
| Bluebells Cleaning Limited | Administrative & support | 2009 |
| Bluebird Automotive Co Ltd | Wholesale & retail | 2022 |
| Bluebirds Day Nursery Limited | Education | 2016 |
| Blueboard Care Services Ltd | Health & social care | 2015 |
| Bluepeak Bazaar Ltd | Wholesale & retail | 2026 |
| Bluesky Property Developers Ltd | Real estate | 2021 |
| Bluewave Shipping Line Ltd | Transport & logistics | 2024 |
| Blustu Ltd | Professional & scientific | 2025 |
| Blutex Properties Limited | Administrative & support | 1992 |
| BM Groundwork Solutions Ltd | Administrative & support | 2026 |
| BM Group Limited | Information & communication | 2017 |
| BM Residentials Ltd | Real estate | 2025 |
| BM Same Day Transport Ltd | Transport & logistics | 2024 |
| BM Tiling Group Limited | Construction | 2017 |
| BM Universal Ltd | Education | 2011 |
| BMC Trans Ltd | Transport & logistics | 2016 |
| BMO Childcare Limited | Health & social care | 2020 |
| BMR Fire Protection Ltd | Other services | 2020 |
| BMS Photography Ltd | Professional & scientific | 2026 |
| BNA Electric Ltd | Construction | 2016 |
| BND Foods Ltd | Wholesale & retail | 2024 |
| BND30 Ltd | Construction | 2025 |
| BNK Protection Services Ltd | Administrative & support | 2025 |
| BNS Allied Limited | Other services | 2011 |
| BNS Retail Limited | Wholesale & retail | 2019 |
| Bnze Clothing Limited | Wholesale & retail | 2024 |
| BO JI Takeaway Limited | Hospitality | 2015 |
| Bo&A Limited | Construction | 2024 |