| Bengeo Limited | Real estate | 2024 |
| Bengoro Maintenance Ltd | Water & waste | 2025 |
| Beni Inn Plaice Limited | Hospitality | 2019 |
| Benifla Limited | Real estate | 2006 |
| Benign IT Solutions Limited | Information & communication | 2015 |
| Benjamins Estate Agents Ltd | Real estate | 2015 |
| Benjo's Convenience Store Ltd | Wholesale & retail | 2026 |
| Benlink Investments Ltd | Health & social care | 2018 |
| Benlon Bridgwater Limited | Construction | 2020 |
| Benlon Kingsmead Limited | Construction | 2020 |
| Benlon Limited | Real estate | 2009 |
| Bennett Care Group Ltd | Financial services | 2024 |
| Bennett Healthcare Ltd | Administrative & support | 2021 |
| Bennetts (Holdings) Limited | Professional & scientific | 2001 |
| Bennetts of Nottingham Designers and Cabinet Makers Limited | Manufacturing | 2010 |
| Bennetts Properties Ltd | Real estate | 2023 |
| Bennetts Safety Consultancy Ltd | Professional & scientific | 2024 |
| Bennfield Holdings Ltd | Financial services | 2025 |
| Bennfield Property Ltd | Health & social care | 2025 |
| Bennington Motors Limited | Wholesale & retail | 2023 |
| Benny Naidu Ltd | Health & social care | 2021 |
| Benovin Luxury Wigs Ltd | Other services | 2023 |
| Bens Chiropractic Limited | Health & social care | 2026 |
| Bentabuilding Limited | Construction | 2025 |
| Bentarka Limited | Real estate | 1997 |
| Bentinck Conservative Club (Hucknall) Limited(The) | Other services | 1945 |
| Bentinck Miners' Welfare Social Club Limited | Hospitality | 1999 |
| Bentinck Self Storage Ltd | Other services | 2022 |
| Bentley Business Park (III) Management Limited | Real estate | 2006 |
| Bentley Business Park II Management Company Limited | Real estate | 2006 |
| Bentley Law Limited | Professional & scientific | 2024 |
| Bentley Park Associates Limited | Financial services | 2006 |
| Benton Communications Limited | Professional & scientific | 2020 |
| Benwell Daykin Estate Agents Ltd | Real estate | 2019 |
| Beos Home Limited | Construction | 2025 |
| Bepc Ltd | Other services | 2026 |
| Bepsi Technologies Ltd | Information & communication | 2025 |
| Bera Limited | Wholesale & retail | 2024 |
| Beraki Ltd | Hospitality | 2024 |
| Bereadyeu Ltd | Wholesale & retail | 2025 |
| Bergkönig Limited | Wholesale & retail | 2023 |
| Berkdale Properties Limited | Real estate | 1999 |
| Berkeley Contracts Limited | Construction | 2000 |
| Berkeley Entertainments Limited | Arts & recreation | 2002 |
| Berkeley Shaw Limited | Professional & scientific | 1998 |
| Berkhamsted V.E. Limited | Other services | 2019 |
| Berla Care Services Ltd | Health & social care | 2024 |
| Berlei (Europe) Limited | Wholesale & retail | 2015 |
| Berlew Limited | Professional & scientific | 2013 |
| Berlie Products Ltd | Wholesale & retail | 2022 |
| Bernard & Leigh Ltd | Professional & scientific | 2018 |
| Bernotti 79 UK Ltd | Wholesale & retail | 2018 |
| Berridge International Composites Limited | Manufacturing | 2025 |
| Berrie Homes Ltd | Real estate | 2024 |
| Berries Trading Ltd | Wholesale & retail | 2019 |
| Berrsey’S Ltd | Wholesale & retail | 2024 |
| Berry Events and Equipment Hire Limited | Other services | 2022 |
| Berry Hill Holdings Ltd | Financial services | 2024 |
| Berry Nails Ltd | Other services | 2025 |
| Berry's Treats Ltd | Manufacturing | 2020 |
| Berrylands (Claude Street) Ltd | Real estate | 2023 |
| Berrylands Limited | Real estate | 2011 |
| Berta Healthcare Ltd | Health & social care | 2023 |
| Bertrand Russell Peace Foundation Limited(The) | Information & communication | 1966 |
| Berwick Building Limited | Construction | 1999 |
| Berwick Upon Tweed V.E. Limited | Other services | 1997 |
| BES Care Limited | Transport & logistics | 2018 |
| Besa Formworks International Ltd | Construction | 2014 |
| Besa Home Improvements Ltd | Construction | 2026 |
| Besafe Healthcare Ltd | Health & social care | 2023 |
| Bespoke (East Midlands) Limited | Financial services | 2026 |
| Bespoke Blooms Limited | Wholesale & retail | 2019 |
| Bespoke Build and Restoration Limited | Construction | 2015 |
| Bespoke Building Surveys Ltd | Construction | 2023 |
| Bespoke Care Consultants Limited | Professional & scientific | 2013 |
| Bespoke Cleaners Limited | Administrative & support | 2018 |
| Bespoke Door Installations Ltd | Construction | 2014 |
| Bespoke Garden Pavilions Limited | Construction | 2025 |
| Bespoke Health & Social Care Ltd | Administrative & support | 2011 |
| Bespoke Interior Designers Limited | Wholesale & retail | 2017 |
| Bespoke Investment Group Limited | Financial services | 2023 |
| Bespoke Joinery & Building Limited | Construction | 2023 |
| Bespoke Lighting and Electrical Limited | Construction | 2019 |
| Bespoke Marketing Initiatives Ltd | Professional & scientific | 2014 |
| Bespoke Marketing Plans Ltd | Professional & scientific | 2023 |
| Bespoke Packaging (Midlands) Ltd | Manufacturing | 2013 |
| Bespoke Refurbishments Ltd | Construction | 2021 |
| Bespoke Retail Solutions Limited | Other services | 2016 |
| Bespoke Reward Solutions Ltd | Professional & scientific | 2023 |
| Bespoke Safety Training & Consultancy Limited | Education | 2012 |
| Bespoke Solutions Property Limited | Real estate | 2018 |
| Bespoke Solutions: IT Consultancy Limited | Information & communication | 2016 |
| Bespoke Sporting Experiences Limited | Arts & recreation | 2020 |
| Bespokocybe Ltd | Health & social care | 2025 |
| Bess Control Ltd | Information & communication | 2024 |
| Best - BE Safe Today Ltd | Other services | 2023 |
| Best Belvoir Limited | Extraterritorial | 2008 |
| Best Board Games Limited | Information & communication | 2021 |
| Best by Farr Ltd | Other services | 2017 |
| Best Cars UK Ltd | Wholesale & retail | 2017 |