| Baba (Bristol) Limited | Hospitality | 2021 |
| Baba Farid International Ltd | Manufacturing | 2026 |
| Babba Pro Ltd | Wholesale & retail | 2025 |
| Babbage Holdings Ltd | Information & communication | 2025 |
| Babbasa Youth Empowerment Projects C.I.C. | Health & social care | 2013 |
| Babble IT Systems Limited | Information & communication | 2001 |
| Babeba Ltd | Hospitality | 2024 |
| Babel Communications and Consultancy Ltd | Information & communication | 2014 |
| Baber and Ball Tile Distribution Ltd | Wholesale & retail | 2020 |
| Babh Ltd | Real estate | 2025 |
| Babies in the Womb Ltd | Other services | 2026 |
| Babington Business College Limited | Education | 1991 |
| Babington Business Limited | Education | 2009 |
| Bablis Ltd | Wholesale & retail | 2024 |
| Baboiudriver 01 Limited | Transport & logistics | 2016 |
| Babu Couriers Ltd | Transport & logistics | 2025 |
| Baby & Co Ltd | Wholesale & retail | 2004 |
| Baby Bond Films Limited | Arts & recreation | 2025 |
| Babys-Mart Ltd | Administrative & support | 2003 |
| BAC Fire & Security Limited | Administrative & support | 2010 |
| BAC Interiors Limited | Construction | 2010 |
| BAC Networks Ltd | Information & communication | 2017 |
| BAC Properties Bristol Limited | Real estate | 2024 |
| BAC Trading Limited | Arts & recreation | 2004 |
| Baciu Express Limited | Transport & logistics | 2020 |
| Back 2 Action Rehabilitation Ltd | Health & social care | 2011 |
| Back BUT Wrong Ltd | Extraterritorial | 2025 |
| Back Garden Pizzeria Ltd | Hospitality | 2023 |
| Back Gardens Cafe Ltd | Extraterritorial | 2013 |
| Back Market UK Ltd | Information & communication | 2021 |
| Back Street Pitza Ltd | Hospitality | 2024 |
| Back Street Pizza Ltd | Hospitality | 2024 |
| Back to Front Studios Ltd | Information & communication | 2023 |
| BACK-2-FRONT UK Ltd | Administrative & support | 2009 |
| BACK2ACTION Ltd | Education | 2012 |
| BACK2BACK Ltd | Extraterritorial | 2007 |
| BACK2BUSINESS Limited | Extraterritorial | 2007 |
| Backend Limited | Information & communication | 2014 |
| Backfields Properties Ltd | Real estate | 2021 |
| Backhouse (Blunsdon) Limited | Construction | 2019 |
| Backhouse (Boreham Mead) Limited | Construction | 2018 |
| Backhouse (Bruton) Limited | Construction | 2025 |
| Backhouse (Calne) JV Limited | Construction | 2018 |
| Backhouse (Calne) Limited | Construction | 2017 |
| Backhouse (Castle Cary Blue) Limited | Construction | 2024 |
| Backhouse (Castle Cary) JV Limited | Construction | 2017 |
| Backhouse (Castle Cary) Limited | Construction | 2017 |
| Backhouse (Devizes) Limited | Construction | 2022 |
| Backhouse (Great Somerford) Limited | Construction | 2019 |
| Backhouse (Highworth Phase 2) Limited | Construction | 2021 |
| Backhouse (Highworth) Limited | Construction | 2019 |
| Backhouse (Mead Fields) Limited | Construction | 2023 |
| Backhouse (Midsomer Norton) Limited | Construction | 2020 |
| Backhouse (Moreton-In-Marsh) Limited | Construction | 2021 |
| Backhouse (North Leigh) Limited | Construction | 2022 |
| Backhouse (Saltersford Lane) Limited | Construction | 2024 |
| Backhouse (Warminster) Limited | Construction | 2020 |
| Backhouse (Westbury) JV Limited | Construction | 2017 |
| Backhouse (Westbury) Limited | Construction | 2017 |
| Backhouse Construction Limited | Construction | 2017 |
| Backhouse Group Limited | Financial services | 2025 |
| Backhouse Housing Limited | Real estate | 2016 |
| Backhouse Land Limited | Construction | 2017 |
| Backhouse Land Opportunities Limited | Construction | 2018 |
| Backhouse Opportunities Limited | Construction | 2018 |
| Backleft Pictures Ltd | Information & communication | 2026 |
| Backlink Gaming Ltd | Information & communication | 2019 |
| Backlog Consulting Limited | Information & communication | 2018 |
| Backpass Limited | Health & social care | 2026 |
| Backplane Technologies Ltd | Information & communication | 2025 |
| Backus Group Limited | Administrative & support | 2015 |
| Backwell Construction Services Ltd | Construction | 2021 |
| Backwell Estates Limited | Real estate | 2012 |
| Backwell Grove Management Company Limited | Households | 2025 |
| Backwell Hand Car Wash Ltd | Other services | 2026 |
| Backwell HAZ Ltd | Hospitality | 2025 |
| Backwell House Limited | Hospitality | 2015 |
| Backwell Investments Limited | Real estate | 2017 |
| Backwell IT Ltd | Information & communication | 2021 |
| Backwell Limited | Extraterritorial | 2000 |
| Backwell Logs Limited | Extraterritorial | 2018 |
| Backwell Management Services Limited | Households | 2025 |
| Backwell Nail Bar Ltd | Other services | 2026 |
| Backwell Properties Ltd | Real estate | 2022 |
| Backwell Property Ltd | Real estate | 2021 |
| Backwell Trade Ltd | Wholesale & retail | 2026 |
| Backwell Wood Estate Limited | Agriculture & fishing | 2018 |
| Backwell Woods Limited | Professional & scientific | 2009 |
| Bacn Foundation Ltd | Professional & scientific | 2023 |
| Baco Group Limited | Professional & scientific | 2021 |
| Bacoile Restoration Limited | Administrative & support | 2026 |
| Bacon Consulting Ltd | Real estate | 2026 |
| BAD ASS Bikes Ltd | Manufacturing | 2004 |
| BAD Dog Embroidery and Print Ltd | Wholesale & retail | 2024 |
| BAD FOX Studios Ltd | Information & communication | 2022 |
| BAD Nature Productions Limited | Information & communication | 2019 |
| BAD Squirrel Cafe Ltd | Hospitality | 2024 |
| BAD Squirrel Restaurant Ltd | Hospitality | 2025 |
| BAD Tony's Ltd | Hospitality | 2025 |
| Bada Ltd | Real estate | 2025 |