| Boadu's Company Limited | Wholesale & retail | 2008 |
| Boateng DRY Lining Ltd | Construction | 2023 |
| Bobby 1 Ltd | Construction | 2017 |
| Bobby Building Services Ltd | Construction | 2025 |
| Bobyem Services Limited | Transport & logistics | 2017 |
| Bocu Logistics Ltd | Transport & logistics | 2019 |
| Bodapel Care Limited | Administrative & support | 2024 |
| Bodija Technologies Limited | Information & communication | 2025 |
| Bodmas Global Solutions Limited | Administrative & support | 2018 |
| Bodson Wines Ltd | Wholesale & retail | 2022 |
| Body Locker Limited | Wholesale & retail | 2017 |
| Bogdanctransport Limited | Transport & logistics | 2018 |
| Bokhari Finance Limited | Financial services | 2021 |
| Bolan Services Limited | Public administration | 2024 |
| Bolan Travel Ltd | Wholesale & retail | 2022 |
| Boldan Investment Limited | Real estate | 2026 |
| Boleyn Developments Limited | Construction | 2020 |
| Bolkas Limited | Health & social care | 2011 |
| Bollson Building Solutions Ltd | Construction | 2025 |
| Boltan Services( UK ) Ltd | Administrative & support | 2018 |
| Boltitback Ltd | Wholesale & retail | 2026 |
| Bolytob Ltd | Wholesale & retail | 2015 |
| Bomire Property Investments Limited | Real estate | 2020 |
| Bomistyles Ltd | Wholesale & retail | 2023 |
| Bona Maintenance Ltd | Construction | 2019 |
| Bonadiva Limited | Wholesale & retail | 2020 |
| Bony 1988 Ltd | Transport & logistics | 2017 |
| Boodoo & Sons Ltd | Real estate | 2016 |
| Booksbymile Ltd | Information & communication | 2018 |
| Boost Cars Ltd | Administrative & support | 2017 |
| Boost Technik Ltd | Wholesale & retail | 2019 |
| Boost.Me Ltd | Wholesale & retail | 2019 |
| Boris Kostov Ltd | Information & communication | 2023 |
| Born to WIN (BTW) Limited | Health & social care | 2022 |
| Boroikandi Welfare Association UK Limited | Health & social care | 2025 |
| Borthwick Casting Ltd | Information & communication | 2018 |
| Borthwick Homes Ltd | Real estate | 2021 |
| BOS Plus Limited | Professional & scientific | 2017 |
| Boschi Limited | Construction | 2022 |
| Bosnurs JPT Ltd | Health & social care | 2026 |
| Boss Export & Import Ltd | Wholesale & retail | 2020 |
| Boston Accountancy Ltd | Professional & scientific | 2015 |
| Boti Ltd | Transport & logistics | 2025 |
| Bougie Hair Ltd | Wholesale & retail | 2024 |
| Boxhive Limited | Administrative & support | 2024 |
| Boxii Bundles Ltd | Wholesale & retail | 2026 |
| Boxpack Logistics UK Limited | Transport & logistics | 2022 |
| Boxup Life CIC | Education | 2024 |
| Boxup Ltd | Wholesale & retail | 2019 |
| Boxupcrime | Health & social care | 2013 |
| Boya Vending Ltd | Hospitality | 2026 |
| Boyana Divarova Ltd | Administrative & support | 2020 |
| Bozz Consulting Ltd | Real estate | 2024 |
| BP Solutions Limited | Wholesale & retail | 2025 |
| BR Waste Solution Limited | Wholesale & retail | 2017 |
| Braha Memo 0167 Limited | Wholesale & retail | 2015 |
| Brahim Services Ltd | Transport & logistics | 2024 |
| Brainlane Limited | Transport & logistics | 2021 |
| Brambley Deals Limited | Wholesale & retail | 2025 |
| Bramon Services Ltd | Administrative & support | 2016 |
| Branded by G Ltd | Wholesale & retail | 2020 |
| Brandigo Ltd | Wholesale & retail | 2022 |
| Branding for Business Limited | Professional & scientific | 2018 |
| Brandrift Ltd | Wholesale & retail | 2025 |
| Brasco Letting Limited | Households | 2024 |
| Brati.A&A Cafe Ltd | Hospitality | 2025 |
| Bravia Limited | Construction | 2005 |
| Bravo Store Ltd | Wholesale & retail | 2021 |
| Braythorn Consultants Limited | Professional & scientific | 2021 |
| Braz Electrical Services Limited | Construction | 2008 |
| Breezy Burgerz 1 Limited | Hospitality | 2024 |
| Bremenenergie Services UK Limited | Wholesale & retail | 2021 |
| Bren Investech Limited | Information & communication | 2013 |
| Brend Construction Ltd | Construction | 2019 |
| Brett Ohanlon Ltd | Construction | 2019 |
| Brexville Property Ltd | Real estate | 2023 |
| Brian Austin Consulting Limited | Manufacturing | 2015 |
| Brian Power Building Limited | Construction | 2005 |
| Brickons Ltd | Manufacturing | 2021 |
| Bricks Constructions Ltd | Construction | 2023 |
| Bricks&Capital Ltd | Real estate | 2022 |
| Brickstay Properties Ltd | Real estate | 2026 |
| Bridge Wise Developments Ltd | Construction | 2026 |
| Bridgewell Advisory Group (UK) Ltd | Financial services | 2025 |
| Bridgford Motors Limited | Wholesale & retail | 2025 |
| Bright and Morning Star Educational Centre Ltd | Education | 2020 |
| Bright and Morning Star Place Ltd | Education | 2020 |
| Bright Capital Holdings Ltd | Real estate | 2024 |
| Bright Fashion Limited | Other services | 2018 |
| Bright KIM Care Solutions Limited | Transport & logistics | 2018 |
| Bright Star Energy Ltd | Energy | 2017 |
| Bright Vehicles Limited | Wholesale & retail | 2020 |
| Brighta GAS & Heating Services Ltd | Manufacturing | 2016 |
| Brighter Care UK Ltd | Health & social care | 2021 |
| Brighter Future Services Limited | Health & social care | 2019 |
| Brightpath Children’S Services Ltd | Health & social care | 2026 |
| Brights Group Ltd | Professional & scientific | 2022 |
| Brightscale Digital Ltd | Professional & scientific | 2025 |
| Brightside Property Services Ltd | Households | 2026 |
| Brightstone Telecom Limited | Information & communication | 2022 |