| Beauty Q Ltd | Other services | 2018 |
| Beauty&Care by Maya Ltd | Other services | 2024 |
| Beauty@Pink Ltd | Administrative & support | 2019 |
| Beauté Dolls Limited | Other services | 2024 |
| Beccaboos Ltd | Wholesale & retail | 2025 |
| Beck-Interiors L Ltd | Construction | 2024 |
| Become Like Little Children Ltd | Other services | 2023 |
| Bedford Acoustic Solutions Ltd | Construction | 2017 |
| Bedford Arms Management Company Ltd | Households | 2018 |
| Bedford Autos Limited | Wholesale & retail | 2023 |
| Bedford Business School Limited | Real estate | 2000 |
| Bedford Car Rentals Ltd | Wholesale & retail | 2025 |
| Bedford Facilities Management Limited | Administrative & support | 2024 |
| Bedford Fresh Produce Limited | Wholesale & retail | 2025 |
| Bedford MAK Limited | Hospitality | 2023 |
| Bedford Rowing Lake CIC | Other services | 2003 |
| Bedford Services Limited | Construction | 2026 |
| Bedfordian Business School Limited | Extraterritorial | 2015 |
| Bedfords Solicitors Limited | Professional & scientific | 2022 |
| Bedfordshire Accommodation Bureau Limited | Real estate | 2001 |
| Bedfordshire and Luton Chamber of Commerce Business and Industry Limited | Other services | 1919 |
| Bedfordshire Auto Electric Limited | Wholesale & retail | 1946 |
| Bedfordshire BIN Cleaning Ltd | Administrative & support | 2025 |
| Bedfordshire Building Company Ltd | Construction | 2018 |
| Bedfordshire Business School Limited | Professional & scientific | 2006 |
| Bedfordshire Cars Ltd | Wholesale & retail | 2022 |
| Bedfordshire Construction & Landscaping Ltd | Construction | 2026 |
| Bedfordshire County Golf Ltd | Arts & recreation | 2020 |
| Bedfordshire Fire Alarms Ltd | Public administration | 2023 |
| Bedfordshire Motors Ltd | Wholesale & retail | 2022 |
| Bedfordshire Property Point Ltd | Real estate | 2025 |
| Bedfordshire Referrals Limited | Administrative & support | 2021 |
| Bedfordshire Travel Ltd | Transport & logistics | 2022 |
| Bedfordshire Vehicle Recovery Limited | Transport & logistics | 2025 |
| Bedfordshire Wills Ltd | Professional & scientific | 2025 |
| Bedrock Luton Limited | Education | 2015 |
| Bedrock Properties Limited | Real estate | 1997 |
| Bedrocks Lettings Limited | Real estate | 2025 |
| Beds Enterprises Ltd | Transport & logistics | 2025 |
| Beds for Contractors Ltd | Information & communication | 2021 |
| Beds Insulation Ltd | Construction | 2021 |
| Beds Motors Ltd | Wholesale & retail | 2025 |
| Beds Premier Property Company Ltd | Real estate | 2012 |
| Beds Property Limited | Real estate | 2009 |
| Beds Property Services Ltd | Administrative & support | 2017 |
| Beds SU | Education | 2017 |
| Bedscare Ltd | Health & social care | 2026 |
| Bedz Automotive Ltd | Wholesale & retail | 2023 |
| BEE Clean London Ltd | Administrative & support | 2014 |
| Beech Court (Hillside Road) Management Company Limited | Households | 1982 |
| Beech Hill Bowling Green,Limited(The) | Arts & recreation | 1911 |
| Beech Hill Conservative Club Buildings Company, Limited | Real estate | 1932 |
| Beech Hill Dental Practice Limited | Health & social care | 2010 |
| Beeches Management Company (Luton) Limited(The) | Households | 1985 |
| Beechwood Court (Dunstable) Limited | Households | 1998 |
| Beechwood Express Ltd | Wholesale & retail | 2019 |
| Beelovera Ltd | Manufacturing | 2026 |
| Beemal Innovation Ltd | Information & communication | 2026 |
| Beengaa Limited | Information & communication | 2026 |
| Beerz'N'Tingz Ltd | Wholesale & retail | 2025 |
| Begum & SAI Limited | Hospitality | 2018 |
| Behold Afri Mart Ltd | Wholesale & retail | 2023 |
| Behz Limited | Other services | 2022 |
| Beige Recruitment Limited | Health & social care | 2016 |
| Beila Homes Ltd | Construction | 2018 |
| Beklo Ltd | Wholesale & retail | 2025 |
| Bek’S Autos Ltd | Wholesale & retail | 2025 |
| Belglen Services Limited | Construction | 2016 |
| Belgofix Ltd | Construction | 2018 |
| Belgrave Cars Limited | Wholesale & retail | 2017 |
| Bell Packaging Holdings Ltd | Financial services | 2022 |
| Bell-Ross Building Services Ltd | Construction | 2025 |
| Bella & Maya Rentals Limited | Real estate | 2026 |
| Bella Feron Property Limited | Real estate | 2025 |
| Bella Investment Group Limited | Real estate | 2015 |
| Bella Logistics Limited | Transport & logistics | 2021 |
| Bella Property Investments Limited | Real estate | 2020 |
| Bellag Ltd | Real estate | 2025 |
| Bellevue Consultancy Limited | Professional & scientific | 2024 |
| Bellus Limited | | 1981 |
| Bellway Construction Limited | Construction | 2025 |
| Belmont & Burj Estates Ltd | Real estate | 2025 |
| Belmont (Chesterfield) Ltd | Construction | 2022 |
| Belmont (Grimsby) Ltd | Construction | 2023 |
| Belmont Car Group Ltd | Transport & logistics | 2022 |
| Belmont Group Holdings Ltd | Financial services | 2021 |
| Belmont Holdings and Investments Ltd | Real estate | 2026 |
| Belmont Law Ltd | Professional & scientific | 2024 |
| Belmont Projects Ltd | Construction | 2020 |
| Belmont Property Developments Ltd | Construction | 2020 |
| Belmont(Peterborough) Ltd | Construction | 2023 |
| Belong Autism CIC | Health & social care | 2026 |
| Beloved Housing Ltd | Real estate | 2023 |
| Belsimo Ltd | Transport & logistics | 2019 |
| Belveder International Ltd | Professional & scientific | 2003 |
| Belyvar Ltd | Construction | 2025 |
| Bemi-Construction Ltd | Construction | 2026 |
| Bemporium Limited | Wholesale & retail | 2024 |
| BEN Darmanin Property Ltd | Real estate | 2025 |
| BEN Foster Construction Limited | Construction | 2020 |