| Bay Properties Limited | Real estate | 2015 |
| Bayan Estates Ltd | Administrative & support | 2025 |
| Bayfield Analytics Ltd | Professional & scientific | 2025 |
| Bayleaf Chellaston Takeout Limited | Hospitality | 2022 |
| Bayley Design and Build Limited | Construction | 2020 |
| Bayswater Property Management Limited | Real estate | 2020 |
| Baytee Holdings Ltd | Real estate | 2025 |
| Baytree Cars Limited | Wholesale & retail | 2006 |
| Baytree Investment Group Ltd | Financial services | 2019 |
| Baytree IT Services Limited | Information & communication | 2000 |
| Baytree Solutions Ltd | Information & communication | 2020 |
| Baytree Trade Centre Ltd | Wholesale & retail | 2021 |
| Bazar Ltd | Transport & logistics | 2019 |
| BB Events Limited | Arts & recreation | 2013 |
| BB Financial Services Ltd | Financial services | 2016 |
| BB Hairdressing Education Services UK Ltd | Other services | 2023 |
| BB Trees Ltd | Administrative & support | 2018 |
| BB9 Lean Solutions Limited | Professional & scientific | 2016 |
| BBD Living Ltd | Real estate | 2022 |
| Bbie Site Management Company Limited | Households | 2019 |
| Bbie SW Sector Management Company Limited | Households | 2019 |
| BBJ Group UK Limited | Water & waste | 2026 |
| BBK Limited | Construction | 2026 |
| Bbmcompany Ltd | Administrative & support | 2024 |
| Bbox Enterprise Ltd | Other services | 2018 |
| BBS Brit ISH Business Solutions Limited | Professional & scientific | 2013 |
| BBS Derby Ltd | Construction | 2017 |
| BBS Transport Ltd | Transport & logistics | 2026 |
| BC FAB Ltd | Manufacturing | 2019 |
| BC60 Consulting Limited | Professional & scientific | 2025 |
| Bcbd Holdings Limited | Financial services | 2021 |
| Bcdef Limited | Real estate | 2021 |
| BCJ Property Holdings Limited | Financial services | 2025 |
| BCJ Property Investment Limited | Real estate | 2025 |
| BCN Logistics Ltd | Transport & logistics | 2025 |
| BCO Carpets Ltd | Wholesale & retail | 2023 |
| BCT Aviation Maintenance Limited | Manufacturing | 2002 |
| BCT Logistics Ltd | Transport & logistics | 2025 |
| BD Training and Consultancy Ltd | Professional & scientific | 2023 |
| Bdfk Holdings Ltd | Financial services | 2021 |
| Bdfk Property Ltd | Real estate | 2021 |
| BDL Inspections Ltd | Other services | 2011 |
| BDS Assist Limited | Real estate | 1999 |
| BDS Property Lettings Limited | Real estate | 2020 |
| BDS Range Care Limited | Manufacturing | 2020 |
| BDT Security Limited | Professional & scientific | 2019 |
| BDV (S1) Limited | Real estate | 2024 |
| BE & an Ltd | Hospitality | 2025 |
| BE Defiant Ltd | Wholesale & retail | 2019 |
| BE Focused Ltd | Professional & scientific | 1997 |
| BE Inclusive Limited | Professional & scientific | 2005 |
| BE Modified Ltd | Arts & recreation | 2023 |
| BE My Guest Bakery Limited | Manufacturing | 2025 |
| BE Water Ltd | Wholesale & retail | 2014 |
| BE YOU Therapy Solutions Ltd | Health & social care | 2021 |
| Beaco Ltd | Manufacturing | 2025 |
| Beacon Park Estate Management Company Limited | Households | 2018 |
| Beacon Resilience & Continuity Ltd | Professional & scientific | 2024 |
| Beaeva Limited | Health & social care | 2015 |
| Bear B2B Limited | Manufacturing | 2021 |
| Bear Coffee Company Limited | Wholesale & retail | 2014 |
| Bear Tactical Shooting Academy Limited | Education | 2025 |
| Bearfx Trading and Education Ltd | Wholesale & retail | 2023 |
| Bearing and Transmission Products Limited | Professional & scientific | 1998 |
| Bearing Transmission & Pneumatics Limited | Wholesale & retail | 1984 |
| Bears ARE US Limited | Professional & scientific | 1997 |
| Bears Consultancy, Construction & Managment (CCM) Ltd | Professional & scientific | 2026 |
| Bears Trucking Solutions Ltd | Transport & logistics | 2024 |
| Beartas Investments Limited | Professional & scientific | 2014 |
| Bearwardcote Hall Residential Home Limited | Health & social care | 2006 |
| Bearwood Park Property Limited | Real estate | 2015 |
| Bearworks Ltd | Information & communication | 2019 |
| Beasley Back Dane | Administrative & support | 2001 |
| Beattock Property Limited | Real estate | 2016 |
| Beau Belles (Derbyshire) Limited | Wholesale & retail | 2003 |
| Beau Jangle Derby Limited | Wholesale & retail | 2018 |
| Beaufort Gardens Limited | Households | 1993 |
| Beaumont Estate Agency Limited | Real estate | 2026 |
| Beauty Boutique Spondon Limited | Other services | 2017 |
| Beauty Box Training Academy Ltd | Other services | 2024 |
| Beauty by Berni Ltd | Other services | 2015 |
| Beauty by Simone Limited | Other services | 2018 |
| Beauty House Limited | Other services | 2021 |
| Beauty Station Ltd | Other services | 2004 |
| Beauty T.Y Ltd | Other services | 2024 |
| Beauty Temple Express Ltd | Other services | 2022 |
| Beauty Within (Chellaston) Ltd | Other services | 2026 |
| Becchetti Group Ltd | Financial services | 2022 |
| Becka Properties Ltd | Real estate | 2025 |
| Beckside Care Farm Limited | Health & social care | 2012 |
| Becky's Cleaning Services Ltd | Administrative & support | 2015 |
| Beckys Residence Ltd | Real estate | 2025 |
| Becomfe Properties Limited | Real estate | 2018 |
| Bedebove Services Limited | Information & communication | 2024 |
| Bedford Interiors Ltd | Construction | 2016 |
| Bedford Vehicles Ltd | Administrative & support | 2024 |
| Bedfords Rentals Limited | Real estate | 2025 |
| Bedi Buys Limited | Wholesale & retail | 2022 |
| Bedside Teaching Ltd | Information & communication | 2015 |
| BEE New Ltd | Real estate | 2025 |