| Blohome Property Ltd | Real estate | 2024 |
| Bloom'N'Belle Ltd | Wholesale & retail | 2025 |
| Blooming Great Gardens Limited | Administrative & support | 2015 |
| Blossom in Somerset Ltd | Health & social care | 2018 |
| Blue Count Limited | Other services | 2022 |
| Blue Dinosaur Limited | Transport & logistics | 2014 |
| Blue Dixie IT Ltd | Information & communication | 2015 |
| Blue MUG Limited | Wholesale & retail | 2023 |
| Bluegrid Ltd | Construction | 2025 |
| Blüm Bookkeeping Ltd | Professional & scientific | 2023 |
| BM Smart Shop Ltd | Wholesale & retail | 2026 |
| Bmhs Property Management Ltd | Real estate | 2026 |
| Boar Vehicle Logistics Ltd | Transport & logistics | 2019 |
| Bobbie-Jo Watt Limited | Health & social care | 2018 |
| Bodmincourt Limited | Administrative & support | 1983 |
| Bodum Land Limited | Real estate | 2020 |
| Body Mechanics South West Limited | Health & social care | 2020 |
| BOH South Limited | Financial services | 2025 |
| Bolder Commerce Ltd | Information & communication | 2025 |
| Bolder Digital Ltd | Information & communication | 2024 |
| Bolder OPS Ltd | Transport & logistics | 2019 |
| Bolder Soft Ltd | Information & communication | 2023 |
| Bootlegger Trading Limited | Hospitality | 2017 |
| BOP South Ltd | Real estate | 2020 |
| Border Guard Solutions UK Ltd | Administrative & support | 2024 |
| Boss Beauty Limited | Other services | 2025 |
| Boston T Gaming Ltd | Wholesale & retail | 2026 |
| Boulderdash Ltd | Information & communication | 2023 |
| Boulton Plastering Limited | Construction | 2010 |
| BOW Farm Enterprises Ltd | Agriculture & fishing | 2026 |
| Bowden Events Ltd | Arts & recreation | 2024 |
| Bowering Estate Management Company Limited | Real estate | 2019 |
| Bowering Properties Limited | Real estate | 1979 |
| Bowness Homes Limited | Real estate | 2017 |
| Boxell Holdings Limited | Financial services | 2020 |
| Boxell Properties Limited | Real estate | 2021 |
| Bracken House Co. Limited | Professional & scientific | 2024 |
| Branchflower Farm Ltd | Construction | 2023 |
| Bratnal Ltd | Construction | 2019 |
| Bravura Enterprises Ltd | Hospitality | 2011 |
| Breakaway Place Limited | Financial services | 2018 |
| Brian Plowright Car Sales Limited | Wholesale & retail | 1998 |
| Bridge Recycling Limited | Water & waste | 2025 |
| Bridge Road Limited | Construction | 2014 |
| Bridges Water Ltd | Wholesale & retail | 2025 |
| Bridgestore Haulage Limited | Transport & logistics | 2007 |
| Bridgewater Costcutter Limited | Wholesale & retail | 2013 |
| Bridgewater Minimarket Limited | Wholesale & retail | 2024 |
| Bridgwater & Taunton College Trust | Education | 2012 |
| Bridgwater 168 Limited | Hospitality | 2016 |
| Bridgwater Agricultural Society Limited | Health & social care | 1978 |
| Bridgwater Balti House Ltd | Hospitality | 2026 |
| Bridgwater Bathrooms Ltd | Construction | 2023 |
| Bridgwater Chamber of Commerce | Administrative & support | 2008 |
| Bridgwater Chiropractic Clinic Limited | Health & social care | 2019 |
| Bridgwater Commercials Limited | Wholesale & retail | 1994 |
| Bridgwater Curry House Limited | Hospitality | 2019 |
| Bridgwater Dessert Ltd | Hospitality | 2024 |
| Bridgwater Fancy Dress Ltd | Wholesale & retail | 2021 |
| Bridgwater Flooring Company Limited | Construction | 2002 |
| Bridgwater Flowers Ltd | Wholesale & retail | 2015 |
| Bridgwater GAS Tech Limited | Construction | 2014 |
| Bridgwater Gateway Industrial Limited | Real estate | 2014 |
| Bridgwater Gateway Limited | Real estate | 2009 |
| Bridgwater Gateway Management Company Limited | Real estate | 2018 |
| Bridgwater GUY Fawkes Carnival | Arts & recreation | 1989 |
| Bridgwater Homes (Hopcott) Ltd | Construction | 2019 |
| Bridgwater Indian Catering Ltd | Hospitality | 2021 |
| Bridgwater Lawn Tennis Club Limited | Arts & recreation | 2013 |
| Bridgwater Machinery Sales Limited | Wholesale & retail | 2013 |
| Bridgwater Metalcraft Limited | Manufacturing | 1991 |
| Bridgwater MOT Centre Ltd | Wholesale & retail | 2019 |
| Bridgwater Pantomime Society Limited | Arts & recreation | 1979 |
| Bridgwater Play Barn Limited | Arts & recreation | 2023 |
| Bridgwater Pubs Management Ltd | Hospitality | 2024 |
| Bridgwater Retail Ltd | Hospitality | 2025 |
| Bridgwater Scaffolding Ltd | Construction | 2022 |
| Bridgwater Spice Ltd | Hospitality | 2025 |
| Bridgwater Store Ltd | Wholesale & retail | 2023 |
| Bridgwater Trailers Limited | Manufacturing | 2019 |
| Bridgwater Turkish Barber Ltd | Other services | 2024 |
| Bridgwater United Football Club Ltd | Arts & recreation | 2020 |
| Bridgwater Welding Supplies Limited | Wholesale & retail | 2013 |
| Briffett & Sons Ltd | Construction | 2024 |
| Bright Futures Club C.I.C. | Education | 2024 |
| Bright Smiles Beauty Aesthetics Ltd | Other services | 2023 |
| Bright Smiles Beauty Limited | Other services | 2024 |
| Brighthill Solutions Limited | Information & communication | 2009 |
| Brighton Rock Cafe Ltd | Hospitality | 2016 |
| Bring Hospitality Group Limited | Hospitality | 2025 |
| Bristol Golf Centre Limited | Arts & recreation | 1980 |
| Bristol Menopause Limited | Health & social care | 2020 |
| Bristol Mini Market Limited | Wholesale & retail | 2024 |
| Bristol Stair Ltd | Manufacturing | 2019 |
| Brit Chips Limited | Hospitality | 2021 |
| Britbuyz Ltd | Wholesale & retail | 2025 |
| Briton Ventures Limited | Information & communication | 2006 |
| Britton Group (SW) Limited | Real estate | 2024 |
| BRO Turkish Barbers Ltd | Other services | 2020 |
| Broad Vision Network Limited | Extraterritorial | 2023 |