| Bedminster RK Limited | Wholesale & retail | 2019 |
| Beechfield View (Torquay) RTM Company Ltd | Households | 2023 |
| Beef STU Ltd | Hospitality | 2025 |
| Beers Plumbing & Heating Ltd | Construction | 2021 |
| Beesolutions (SW) Ltd | Construction | 2019 |
| Beewise FS Ltd | Financial services | 2020 |
| Beewise Property Group Ltd | Real estate | 2025 |
| Beforestores Limited | Wholesale & retail | 2018 |
| Behaviourself Education Ltd | Education | 2020 |
| Belaris Consultancy Limited | Professional & scientific | 2015 |
| Belgrave Design Solutions Limited | Construction | 2006 |
| Bella Bagno Ltd | Construction | 2012 |
| Bellatrix Dance Company Limited | Arts & recreation | 2023 |
| Belle Toujours Salons Limited | Other services | 2012 |
| Belmont Leisure Investment Ltd | Wholesale & retail | 2016 |
| Bembeya Ltd | Information & communication | 2019 |
| BEN Allen PPC Ltd | Professional & scientific | 2024 |
| BEN Crossman Limited | Manufacturing | 2005 |
| BEN Electrical Wholesale Ltd | Wholesale & retail | 2020 |
| Benares Court Management Company Limited | Households | 2006 |
| Benbobson Ltd | Health & social care | 2018 |
| Benchmark Elevators Limited | Manufacturing | 2017 |
| Benjamin Plaistow Limited | Extraterritorial | 2019 |
| Bennett Environmental Limited | Professional & scientific | 1993 |
| Bernard Crescent Management Company Limited | Households | 1985 |
| Berrow Lodge Management Company Limited | Households | 1983 |
| Berry Redmond Gordon and Penney LLP | | 2011 |
| Bespoke Administration Limited | Other services | 2018 |
| Bespoke Administration Services Limited | Administrative & support | 2018 |
| Bespoke Building & Carpentry Ltd | Construction | 2014 |
| Bespoke Landscape & Construction Ltd | Construction | 2025 |
| Bespoke Lettings and Management Limited | Households | 2019 |
| Bespoke Litigation Limited | Administrative & support | 2018 |
| Bespoke Staffing Services Limited | Administrative & support | 2016 |
| Bespoke Technology Labs Limited | Information & communication | 2020 |
| Bespoke Trading Solutions Limited | Professional & scientific | 2017 |
| Best Electrical Controls Ltd | Construction | 2023 |
| Best Transport Ltd | Transport & logistics | 2024 |
| Best-For Consulting Limited | Information & communication | 2026 |
| Bestbilet Limited | Arts & recreation | 2025 |
| Bethelem Ltd | Other services | 2026 |
| Better Kitchens Ltd | Manufacturing | 2006 |
| Better Online Limited | Financial services | 2018 |
| Betty Rose Ltd | Wholesale & retail | 2011 |
| Beulah Connections Ltd | Information & communication | 2023 |
| Beyond the Booth Limited | Administrative & support | 2024 |
| Beyond Vibration Ltd | Health & social care | 2025 |
| BG Properties Investments Ltd | Real estate | 2025 |
| BG Properties MGT Ltd | Real estate | 2025 |
| BH Tapers Limited | Construction | 2025 |
| Bhbd Colours Ltd | Other services | 2019 |
| Bhimbha Limited | Wholesale & retail | 2025 |
| Biaopai Limited | Extraterritorial | 2020 |
| Biase Care Limited | Health & social care | 2023 |
| Bibbys Interior Installations Ltd | Construction | 2017 |
| Bidbe Ltd | Professional & scientific | 2026 |
| Biddiscombes Limited | Hospitality | 1993 |
| Big Novas Ltd | Wholesale & retail | 2020 |
| Big Trans Ltd | Transport & logistics | 2018 |
| Big Wild PIG Ltd | Transport & logistics | 2018 |
| Bigboy Ltd | Wholesale & retail | 2022 |
| Bike Parts Weston Ltd | Manufacturing | 2026 |
| Bike Works, MOT Sales & Service Ltd | Wholesale & retail | 2019 |
| Bill Banwell Limited | Arts & recreation | 2018 |
| Billbox Ltd | Construction | 2025 |
| Bird Heating (SW) Ltd | Construction | 2015 |
| Bird Rentals (SW) Ltd | Real estate | 2016 |
| Birdco Ltd | Arts & recreation | 2015 |
| Birdco Properties Ltd | Real estate | 2020 |
| Birnbeck Conservation Group Limited | Other services | 2023 |
| Birnbeck Inns Limited | Hospitality | 2019 |
| Birnbeck Lodge (Management) Limited | Households | 2022 |
| Birnbeck Logistics Limited | Extraterritorial | 2021 |
| Bishop Building Services SW Ltd | Construction | 2024 |
| Black Delivery Ltd | Wholesale & retail | 2025 |
| Black Detail Limited | Wholesale & retail | 2024 |
| Black Rock Outdoors Limited | Arts & recreation | 2008 |
| Black Sheep Management Limited | Administrative & support | 2011 |
| Blackberry Hill Residents Management Company Limited | Households | 2018 |
| Blackbird (SW) Ltd | Construction | 2024 |
| Blackdog Biomechanics Ltd | Information & communication | 2021 |
| Blackdown Property Services Ltd | Real estate | 2016 |
| Blackgate Property Management Limited | Households | 1982 |
| Bleadon Oak Ltd | Construction | 2026 |
| Blencathara Court (Management) Limited | Households | 1982 |
| Bless&Ike Ltd | Health & social care | 2024 |
| Bleun Limited | Professional & scientific | 2025 |
| Blhr Holdings Ltd | Real estate | 2022 |
| Blossomstar Care Limited | Public administration | 2025 |
| Blowleaf Ltd | Professional & scientific | 2020 |
| Blue Bird OFM Ltd | Professional & scientific | 2026 |
| Blue Elephant Catering Equipment Limited | Manufacturing | 2016 |
| Blue Flame Plumbing Solutions Limited | Construction | 2019 |
| Blue Flame South West Ltd | Construction | 2017 |
| Blue Monkey Coaching Limited | Professional & scientific | 2019 |
| Blue Productions Limited | Professional & scientific | 2010 |
| Blue Sky Bike Tours Ltd | Administrative & support | 2024 |
| Blue Sky Medic Ltd | Information & communication | 2025 |
| Blue Spot Care Services Ltd | Health & social care | 2018 |
| Blue Spot Cleaning Service Ltd | Administrative & support | 2014 |