| Blue Wave (South West) Ltd | Hospitality | 2014 |
| Blue Wave Food & Wine Ltd | Wholesale & retail | 2026 |
| Blue Wolf Assets Limited | Households | 2020 |
| Bluebeam Group Limited | Construction | 2025 |
| Bluebell Banqueting Ltd | Hospitality | 2025 |
| Bluecube Building Services Limited | Construction | 2022 |
| Blueroom Consultancy Ltd | Professional & scientific | 2020 |
| Blumop Limited | Administrative & support | 2024 |
| Bluntlake Limited | Households | 1987 |
| Blyths Film & Location Safety Services Limited | Public administration | 2019 |
| Bmexchange Ltd | Other services | 2026 |
| BML Carpentry & Construction Ltd | Construction | 2026 |
| Boathouse Hounds Ltd | Wholesale & retail | 2023 |
| Body Snatched Aesthetics Ltd | Health & social care | 2022 |
| Bolton Court RTM Company Ltd | Households | 2024 |
| BON MOT Limited | Information & communication | 2025 |
| Bonell Construction Ltd | Construction | 2021 |
| Bonner Property Holdings Ltd | Real estate | 2018 |
| Bonneville Healthcare Services Limited | Administrative & support | 2025 |
| Bonum Domos Ltd | Real estate | 2023 |
| BOOGEYMAN1988 Ltd | Transport & logistics | 2019 |
| Books to Life Marketing Ltd | Professional & scientific | 2022 |
| Boost Academy Ltd | Education | 2021 |
| Boost Trampolining C.I.C. | Arts & recreation | 2019 |
| Borse Medicare Limited | Administrative & support | 2017 |
| Botanik BBQ Limited | Hospitality | 2024 |
| Bothy Ventures Ltd | Real estate | 2025 |
| Botley Energy Reserve 2 Limited | Construction | 2019 |
| Botterill Property Ltd | Real estate | 2021 |
| Boubro Ltd | Wholesale & retail | 2020 |
| Boulevard Brides Ltd | Wholesale & retail | 2009 |
| Boulevard Spa 25 Limited | Health & social care | 2012 |
| Boulton Glass & Glazing Ltd | Construction | 2017 |
| Bourne DEV Ltd | Information & communication | 2017 |
| Bouverie Mansions Management Limited | Households | 1990 |
| Bowler Vehicle Inspection Services Ltd | Manufacturing | 2025 |
| Bowman-Wood Properties Ltd | Real estate | 2025 |
| Boxy & White Limited | Financial services | 2024 |
| Boxy's CAB Limited | Transport & logistics | 2019 |
| Boye Services Ltd | Health & social care | 2023 |
| BR Tech Services Ltd | Professional & scientific | 2025 |
| Brad Wakefield Photography Limited | Professional & scientific | 2018 |
| Bradleys Juices Limited | Manufacturing | 2012 |
| Brandspresso Limited | Arts & recreation | 2019 |
| Branton House RTM Company Limited | Households | 2021 |
| Brave Family Ltd | Other services | 2025 |
| Bray Transport Ltd | Transport & logistics | 2024 |
| BRB Events Ltd | Administrative & support | 2024 |
| Brean House Maintenance Limited | Households | 1967 |
| Brean Sands Capital Ventures Ltd | Administrative & support | 2019 |
| Brean View Court Management Company Ltd | Real estate | 2018 |
| Brean View Management Limited | Households | 2003 |
| Brent Cars Limited | Wholesale & retail | 2003 |
| Brian Saunders Haulage Ltd | Transport & logistics | 2012 |
| Briar Close (Burnham-On-Sea) Management Company Limited | Households | 1983 |
| Brickdemic Ltd | Wholesale & retail | 2026 |
| Bridge Flooring On-Line Limited | Wholesale & retail | 2017 |
| Bridge Reporting Limited | Administrative & support | 2010 |
| Bridging the GAP Together! Community Interest Company | Administrative & support | 2016 |
| Bridgwater Court M.C. Limited | Households | 1988 |
| Bridgwater RK Ltd | Wholesale & retail | 2019 |
| Bright Hair Ltd | Other services | 2019 |
| Bright Minds Education Services Limited | Education | 2025 |
| Brighter Choice Ltd | Construction | 2020 |
| Brighter Room Roof Windows Ltd | Construction | 2021 |
| Brilliant Automotive Ltd | Wholesale & retail | 2025 |
| Brills (WSM) Ltd | Transport & logistics | 2022 |
| Bring and MIX Ltd. | Hospitality | 2014 |
| Bringing Communities Together (BCT) Community Interest Company | Education | 2010 |
| Brinsea Products Limited | Manufacturing | 1976 |
| Bristol & West Auctions Limited | Professional & scientific | 2013 |
| Bristol & Weston Executive Chauffeurs Ltd | Other services | 2015 |
| Bristol .Property Rentals Limited | Households | 2018 |
| Bristol Activity Centre Limited | Arts & recreation | 2004 |
| Bristol Bulk Group Ltd | Transport & logistics | 2025 |
| Bristol Business Consulting Ltd | Professional & scientific | 2014 |
| Bristol City Flat Roofing Limited | Construction | 2022 |
| Bristol Dojo Limited | Arts & recreation | 2008 |
| Bristol Heights Limited | Households | 2019 |
| Bristol Investment Group Ltd | Construction | 2020 |
| Bristol Jazz Festival Ltd | Arts & recreation | 2012 |
| Bristol Property Rentals UK Limited | Real estate | 2018 |
| Bristol Safety Ltd | Education | 2013 |
| Bristols Auto Sales Ltd | Wholesale & retail | 2024 |
| Bristows Construction Services Ltd | Construction | 2024 |
| British & Irish Rugby Legends Limited | Arts & recreation | 2010 |
| Britpack 3PL Ltd | Extraterritorial | 2025 |
| Britton & Co (Solicitors) Limited | Professional & scientific | 2007 |
| Brixham Building Company (Devon) Limited | Construction | 2016 |
| Brizzie Kicks Ltd | Wholesale & retail | 2020 |
| Brkglobalholdings Ltd | Hospitality | 2025 |
| Broadway Lodge Limited | Health & social care | 1975 |
| Bromley Auto Services Ltd | Wholesale & retail | 2025 |
| Brookfield Sales & Lettings Ltd | Real estate | 2018 |
| Brooking, Ruse & Co. Limited | Professional & scientific | 2003 |
| Brookmark Ltd | Professional & scientific | 2015 |
| Brookson (5205B) Limited | Administrative & support | 2007 |
| Brunel Bathroom Installations Limited | Construction | 2023 |
| Brunel Photography Bristol Ltd | Professional & scientific | 2014 |
| Bryn Mansions Management Limited | Households | 1988 |