| Bensham Tandoori Ltd | Hospitality | 2018 |
| Bensham Wines Ltd | Wholesale & retail | 2021 |
| Benshmark Ltd | Information & communication | 2018 |
| Benson Electrical Services Limited | Construction | 2018 |
| Bentincks Ltd | Manufacturing | 2009 |
| Bentley Eleven Ltd | Real estate | 2024 |
| Benzone Ltd | Real estate | 2014 |
| Berkeley Capital Ltd | Real estate | 2025 |
| Bernardes Ltd | Health & social care | 2015 |
| Berns Investments Ltd | Extraterritorial | 2011 |
| Bernvis Ltd | Real estate | 2016 |
| Berry Cresco Limited | Agriculture & fishing | 2026 |
| Berry's Hairdressing Ltd | Other services | 2014 |
| Bertie's Shirts Limited | Wholesale & retail | 2025 |
| Besad Ltd | Real estate | 2020 |
| Besafe Training Limited | Education | 2015 |
| Besamim Ltd | Real estate | 2021 |
| Bespoke Cleaning Solutions NE Ltd | Administrative & support | 2018 |
| Bespoke Fitness Consultancy Ltd | Professional & scientific | 2021 |
| Bespoke Plant Supports Limited | Wholesale & retail | 2015 |
| Bespoke Utility Solutions Limited | Real estate | 2016 |
| Best 4 Vans Limited | Extraterritorial | 2011 |
| Best of the Best Business Ltd | Real estate | 2020 |
| Best Shawarma (Gateshead) Ltd | Hospitality | 2026 |
| Best Shawarma (NE) Ltd | Hospitality | 2025 |
| BEST1VICTORIA Ltd | Wholesale & retail | 2025 |
| BESTONE1COATSWORTH Ltd | Wholesale & retail | 2025 |
| Bestun Dent Ltd | Health & social care | 2026 |
| Beta Way Nutrition Ltd | Wholesale & retail | 2024 |
| Bettamedic Limited | Health & social care | 2017 |
| Better Business Marketing UK Limited | Professional & scientific | 2024 |
| Better Days Ahead Limited | Real estate | 2023 |
| Better Homes NE Ltd | Real estate | 2023 |
| Better UK Bric-A-Brac Ltd | Wholesale & retail | 2022 |
| Better Waste Solutions Limited | Professional & scientific | 2020 |
| Beverley Healthcare Limited | Health & social care | 2024 |
| Bewick Estates Limited | Real estate | 2004 |
| Bewick Estates NO.1 Ltd | Real estate | 2017 |
| Bewick Estates NO.2 Ltd | Real estate | 2017 |
| Bewick House Ltd | Hospitality | 2025 |
| Bewick Ltd | Real estate | 2019 |
| Bexdo Consultancy Ltd | Information & communication | 2016 |
| Beyedei Shomayim Ltd | Real estate | 2021 |
| Beyond Education Limited | Education | 2024 |
| Bez.H Limited | Real estate | 2013 |
| BF Building Solutions Limited | Construction | 2021 |
| BF Property Holdings Ltd | Real estate | 2023 |
| BFG Hearing Solutions Limited | Health & social care | 2023 |
| BG Subsea Ltd | Professional & scientific | 2014 |
| BH Always Ltd | Real estate | 2021 |
| BH Construction Ltd | Construction | 2020 |
| BH Decorating NE Ltd | Construction | 2023 |
| BH Felling Ltd | Hospitality | 2025 |
| Bhaz Holdings Ltd | Hospitality | 2025 |
| BHL Woodland Limited | Construction | 2020 |
| BHR Scaffolding Ltd | Construction | 2026 |
| Bici Civil Engineering Limited | Construction | 2022 |
| Bicm Consulting Limited | Information & communication | 2016 |
| Bidsafe Limited | Professional & scientific | 2025 |
| Bienvenue 106 Ltd | Wholesale & retail | 2025 |
| Big Lukes Metrocentre Limited | Hospitality | 2018 |
| Big Pink House Ltd | Real estate | 2021 |
| Big Purple Events Limited | Administrative & support | 2020 |
| Big Purple Productions Ltd | Administrative & support | 2013 |
| Bigboy Bakeshop Ltd | Wholesale & retail | 2017 |
| Bigdata Services Limited | Information & communication | 2016 |
| Bikepartsfarm Ltd | Water & waste | 2025 |
| Bilal & Sons Ltd | Hospitality | 2017 |
| Bilal Estates Ltd | Real estate | 2026 |
| Bilal Masters Ltd | Hospitality | 2025 |
| Bilder Investments Ltd | Construction | 2023 |
| Bill Quay Cafe Limited | Hospitality | 2020 |
| Bill Quay Training Ltd | Education | 2021 |
| Billu K Limited | Real estate | 2003 |
| Bimts Ltd | Professional & scientific | 2025 |
| Bindis Ltd | Real estate | 2025 |
| Binyan Dovid Ltd | Real estate | 2024 |
| Binyanei JAL Ltd | Real estate | 2021 |
| Bionaid Ltd | Manufacturing | 2022 |
| Biorise Ltd | Professional & scientific | 2025 |
| Birch Care Group Ltd | Health & social care | 2025 |
| Birchwood Services Ltd | Real estate | 2019 |
| Birkah Limited | Real estate | 2024 |
| Birkah Properties Ltd | Real estate | 2026 |
| Biscay Products Limited | Wholesale & retail | 2014 |
| Biscuit International (UK) II Limited | Manufacturing | 1997 |
| Biscuit International UK Limited | Manufacturing | 2002 |
| Bishop 1 Bar Company Ltd | Hospitality | 2025 |
| Bishop 1 Beer Company Ltd | Hospitality | 2025 |
| Bison Architectural Ltd | Administrative & support | 2016 |
| Bison Inc Ltd | Manufacturing | 2012 |
| Bistro Giuseppe Limited | Hospitality | 2019 |
| BIT2BYTE Limited | Information & communication | 2015 |
| BJ Medical Services Limited | Health & social care | 2014 |
| BJ Property (NE) Limited | Real estate | 2025 |
| BJD Electrical Ltd | Construction | 2025 |
| BJS (NE) Limited | Wholesale & retail | 2017 |
| BJS Investments Ltd | Real estate | 2020 |
| BK Medical Services Ltd | Health & social care | 2016 |
| BKE N.E Ltd | Professional & scientific | 2019 |