| Barakah Visuals Ltd | Professional & scientific | 2024 |
| Barcham Creative Ltd | Information & communication | 2026 |
| Barecroft Carpentry Limited | Construction | 1997 |
| Bartlett Contracting Services Limited | Water & waste | 2011 |
| Bartley Court Management Company Limited | Households | 2004 |
| Bath Autism and Neurodiversity Spectrums (Bands) C.I.C. | Health & social care | 2016 |
| Bath Court (Thornbury) Management Company Limited | Households | 2008 |
| Bayfield Management Limited | Households | 1994 |
| BCE Group Limited | Real estate | 2019 |
| BCH Properties Limited | Construction | 2005 |
| Bclean (South West) Limited | Administrative & support | 2025 |
| BDL Nutrition Ltd | Other services | 2019 |
| Beaucliffe Management Company Limited | Households | 2004 |
| Bedminster Down Road Management Company Limited | Households | 2005 |
| Beechwood Environmental Ltd | Water & waste | 2003 |
| Bellevue Court (Clevedon) Maintenance Company Limited | Households | 1977 |
| Benchmark Project Management (UK) Limited | Construction | 2005 |
| Bennett TV Limited | Information & communication | 2020 |
| Bentley Mills Group Limited | Administrative & support | 2023 |
| Bentom Consultancy Ltd | Professional & scientific | 2020 |
| Bespoke Consultancy & Education Limited | Education | 2013 |
| Bespoke Everything Ltd | Information & communication | 2026 |
| Betsy Travis Consulting Limited | Professional & scientific | 2022 |
| BG Exeter Limited | Hospitality | 2019 |
| Bickley House Management Company Limited | Professional & scientific | 1997 |
| Bicycle Works Ltd | Manufacturing | 2025 |
| Big Things Clothing Ltd | Manufacturing | 2019 |
| Bikepak Ltd | Wholesale & retail | 2021 |
| Bikestyle Limited | Professional & scientific | 2019 |
| Birklands (Clevedon) Limited | Households | 1987 |
| Biscuit Enterprises Ltd | Professional & scientific | 2022 |
| BJJ Nutrition Ltd | Extraterritorial | 2023 |
| BJL Painting & Decorating Limited | Construction | 2024 |
| BK Installations (South West) Ltd | Construction | 2014 |
| BL Consult Ltd | Professional & scientific | 2021 |
| Black Sunshine Consulting Limited | Professional & scientific | 2021 |
| Blake's Taverns Ltd | Hospitality | 2024 |
| Blok Facilities Ltd | Administrative & support | 2026 |
| Blue DOT Code Ltd | Information & communication | 2023 |
| Blue Skies Consultancy Group Ltd | Professional & scientific | 2026 |
| Bognor House Day Nursery Limited | Education | 2013 |
| Bonds Automotive Ltd | Wholesale & retail | 2025 |
| Books on the Hill Clevedon LLP | | 2025 |
| Borough Mall Company Limited(The) | Real estate | 1984 |
| Botsablyai Limited | Information & communication | 2025 |
| Bracara Augusta Designs Ltd | Wholesale & retail | 2022 |
| Bratey Food Ltd | Hospitality | 2024 |
| Bravo Entertainment Limited | Arts & recreation | 2019 |
| Breathe Success Limited | Real estate | 2021 |
| Brian Jones Structural Engineers Limited | Professional & scientific | 2003 |
| Bricks and Mortar (Jersey) Ltd | Real estate | 2018 |
| Brilliams Limited | Information & communication | 2025 |
| Bristol Aerospace Consulting Limited | Professional & scientific | 2022 |
| Bristol Breast Consultants Limited | Health & social care | 2023 |
| Bristol East Baby Sensory Limited | Other services | 2019 |
| Bristol Groundschool (UK) Limited | Other services | 2003 |
| Bristol Groundschool International Ltd | Education | 2015 |
| Bristol Groundschool Limited | Education | 1991 |
| Bristol Groundschool Training Limited | Education | 2016 |
| Bristol Jewellery Company Ltd | Wholesale & retail | 2022 |
| Bristol Letting Solutions Limited | Real estate | 2025 |
| Bristol Lock Company Ltd | Administrative & support | 2010 |
| Bristol Rebar Limited | Manufacturing | 2020 |
| Bristol Relocations Limited | Administrative & support | 2015 |
| Bristol Service Apartments Limited | Real estate | 2019 |
| Bristol Wool Fair Limited | Administrative & support | 2013 |
| Bristolian Property Ltd | Real estate | 2025 |
| Britair UK Limited | Manufacturing | 2022 |
| Britannia Windows (Clevedon) Limited | Wholesale & retail | 2021 |
| Britannia Windows (Holdings) Limited | Financial services | 2025 |
| Britannia Windows (UK) Limited | Construction | 1982 |
| Britelane Technologies Limited | Manufacturing | 2024 |
| Brizzle Projects Limited | Real estate | 2023 |
| Brown Investment (Bath) LLP | | 2023 |
| Brown Rock Woodland Community Interest Company | Agriculture & fishing | 2018 |
| BRS Automation UK Ltd | Professional & scientific | 2018 |
| Brunel Engraving Company Limited | Manufacturing | 1991 |
| Buildhersuk Ltd | Administrative & support | 2026 |
| Bunch of Grapes BW Ltd | Hospitality | 2026 |
| Burnett Hotels Limited | Real estate | 2007 |
| Bushbury Flat Management Ltd | Households | 2010 |
| Butlers Walk (B) RTM Company Limited | Households | 2023 |
| Butlers Walk (C) RTM Company Limited | Households | 2023 |
| Butlers Walk (D) RTM Company Limited | Households | 2023 |
| Butlers Walk (E) RTM Company Limited | Households | 2023 |
| Butlers Walk (F) RTM Company Limited | Households | 2023 |
| Butterfly Travel UK Ltd | Administrative & support | 2013 |
| Buzzit Bristol Ltd | Transport & logistics | 2020 |
| BW Surveying Limited | Professional & scientific | 2017 |
| Bytes Digital Limited | Wholesale & retail | 2013 |
| C & H Facilities Management Ltd | Administrative & support | 2025 |
| C & R Agencies Ltd | Administrative & support | 2008 |
| C E Signs Limited | Administrative & support | 2006 |
| C N H Transport Ltd | Transport & logistics | 2009 |
| C Summerell & Sons Limited | Construction | 2006 |
| C Ward Construction Ltd | Construction | 2022 |
| C. B. S. Precast Ltd | Construction | 1991 |
| C.M.Young Plumbing & Heating Limited | Construction | 2010 |
| Cabot Court (Kingswood) Management Company Limited | Households | 2006 |
| Cabot House Residential Management Company (Bristol) Limited | Households | 2010 |