| Buzz Aviation Consultancy Limited | Professional & scientific | 2015 |
| Buzz Financial Solutions Limited | Professional & scientific | 2017 |
| Buzzard Developments Ltd | Construction | 2019 |
| Buzzard Property Limited | Real estate | 2021 |
| Buzzbrightmedia Ltd | Information & communication | 2025 |
| Buzzweld Ltd | Manufacturing | 2022 |
| Bvca Ltd | Manufacturing | 2018 |
| BVF Industries Ltd | Arts & recreation | 2016 |
| BVL Construction Ltd | Construction | 2025 |
| Bvma Ltd | Wholesale & retail | 2021 |
| Bvmc Ltd | Wholesale & retail | 2020 |
| Bvmg Ltd | Wholesale & retail | 2017 |
| BW Business Accountants & Advisers Limited | Professional & scientific | 2021 |
| BW Cycling Limited | Wholesale & retail | 2011 |
| BW Investment Finance Limited | Administrative & support | 2022 |
| BWA Management Limited | Administrative & support | 2013 |
| BWB Business Without Borders Limited | Wholesale & retail | 2020 |
| BWB Films Ltd | Information & communication | 2022 |
| BWB Heating Installations Limited | Construction | 2017 |
| BWC Talent Ltd | Administrative & support | 2022 |
| BWE Envirotech Ltd | Administrative & support | 2014 |
| BWF Services Ltd | Manufacturing | 2016 |
| BWJ Properties Limited | Real estate | 2022 |
| BWP Issuer PLC | Administrative & support | 2018 |
| BWP Project Services Limited | Professional & scientific | 2010 |
| BWP Services (Holdings NO 1) Limited | Administrative & support | 2010 |
| BWP Services (Holdings NO 2) Limited | Administrative & support | 2010 |
| BWP Services (Holdings NO 3) Limited | Administrative & support | 2018 |
| Bwrc Ltd | Health & social care | 2022 |
| Bwrx Limited | Energy | 2024 |
| Bwti Limited | Administrative & support | 2025 |
| Bwtt Plus Limited | Professional & scientific | 2025 |
| Bxcellence Community Interest Company | Information & communication | 2023 |
| BY Bakery Limited | Hospitality | 2021 |
| BY Georgette LLP | | 2021 |
| BY Hope Limited | Wholesale & retail | 2020 |
| BY Kate Creates Ltd | Professional & scientific | 2026 |
| BY KIT Ltd | Information & communication | 2022 |
| BY Maison Creed Limited | Construction | 2023 |
| BY Others Ltd | Professional & scientific | 2019 |
| BY Sahara Clothing Ltd | Wholesale & retail | 2024 |
| BY Selina Ltd | Wholesale & retail | 2021 |
| BY the Word Ltd | Extraterritorial | 2014 |
| Bybrook Community Concierge Ltd | Administrative & support | 2020 |
| Bydesign Developments Ltd | Real estate | 2025 |
| Bydexdurrant Ltd | Wholesale & retail | 2024 |
| Byfc Limited | Administrative & support | 2021 |
| Byfield Services Ltd | Administrative & support | 2007 |
| Bygott (Contracts) Ltd | Construction | 2010 |
| Byldan Ltd | Real estate | 2006 |
| Bymgem Ltd | Real estate | 2018 |
| Bynext Ltd | Wholesale & retail | 2026 |
| Bynotech Consulting Limited | Professional & scientific | 2023 |
| Byrne Associates Limited | Professional & scientific | 2000 |
| Byrne Leisure Limited | Hospitality | 2000 |
| Byron Delivery Services Limited | Transport & logistics | 2007 |
| Bysocials Ltd | Wholesale & retail | 2025 |
| Byte River Ltd | Information & communication | 2022 |
| Byteback IT Solutions Limited | Information & communication | 2011 |
| Bytebox Kitchens Ltd | Hospitality | 2025 |
| Bytefrost Tech Limited | Information & communication | 2026 |
| Bytesize Computer Services Ltd | Information & communication | 2014 |
| Bytrade-Platform Limited | Information & communication | 2026 |
| Bywater Holdings Ltd | Financial services | 2021 |
| Bywyd Bliss Ltd | Financial services | 2020 |
| Byzantine Court Management Company Limited | Households | 1984 |
| C & a Bennett (Tiling Contractors) Limited | Construction | 1992 |
| C & a Johnson Limited | Construction | 2002 |
| C & a Loft Conversion Ltd | Construction | 2022 |
| C & B Holdings (Bristol) Ltd | Construction | 2021 |
| C & B Industrial Maintenance Services Limited | Administrative & support | 2008 |
| C & C Building Developments Ltd | Real estate | 2017 |
| C & C Commercials (Bristol) Ltd | Wholesale & retail | 2021 |
| C & C Electrical Solutions Limited | Construction | 2010 |
| C & C Management & Maintenance Ltd | Administrative & support | 2011 |
| C & C Motors Limited | Wholesale & retail | 2003 |
| C & C Servicing Company Limited | Wholesale & retail | 2024 |
| C & C Winterbourne Developments Limited | Real estate | 2019 |
| C & E Homes Ltd | Real estate | 2024 |
| C & G Fitting Services Limited | Construction | 2006 |
| C & G Inns (Bristol) Ltd | Hospitality | 2019 |
| C & I South West Limited | Construction | 2011 |
| C & J Adams (Bristol) Ltd | Manufacturing | 2020 |
| C & M Bristol Development Limited | Real estate | 2010 |
| C & M Building Services SW Ltd | Construction | 2025 |
| C & M Olds Ltd | Professional & scientific | 2025 |
| C & M Services (Bristol) Limited | Professional & scientific | 2005 |
| C & R Tucker Limited | Manufacturing | 2012 |
| C & S Coldharbour Ltd | Real estate | 2025 |
| C & S Paradise Limited | Wholesale & retail | 2025 |
| C & T Vulcanising Services Limited | Manufacturing | 2006 |
| C a Beckwith Limited | Other services | 2023 |
| C a Taylor Associates Limited | Professional & scientific | 2019 |
| C and P Lettings Limited | Real estate | 2016 |
| C B & S J Jones Limited | Wholesale & retail | 2001 |
| C B Auto Services Limited | Wholesale & retail | 2002 |
| C B Responsible Business Solutions Ltd | Professional & scientific | 2024 |
| C Balan Limited | Transport & logistics | 2024 |
| C Brookes Plumbing and Heating Ltd | Construction | 2019 |
| C C Consulting (SW) Ltd | Professional & scientific | 2014 |