| B2D Trawlers Limited | Agriculture & fishing | 2020 |
| B64 Limited | Real estate | 2012 |
| Babbacombe Appartments Limited | Hospitality | 2012 |
| Babbacombe Care Limited | Other services | 1999 |
| Babbacombe Cliff Management Company Limited | Real estate | 2001 |
| Babbacombe Downs Court Management Company Limited | Households | 1989 |
| Babbacombe House Limited | Households | 1987 |
| BACK2BACK Apparel Ltd | Wholesale & retail | 2025 |
| Baggy Bistro Ltd | Hospitality | 2013 |
| Baggy's Ltd | Agriculture & fishing | 2004 |
| Ballards Competitive Socialising Ltd | Hospitality | 2025 |
| Bamby Properties Limited | Real estate | 2025 |
| Bank House Ashburton Management Company Limited | Households | 1986 |
| Bar Olive Ltd. | Transport & logistics | 2016 |
| Barchington Architectural Consultancy Limited | Professional & scientific | 2012 |
| Barn Climbing Limited | Arts & recreation | 2007 |
| Barnstaple Town Football Club (2014) Limited | Arts & recreation | 2014 |
| Baronridge Limited | Households | 1990 |
| Barrie Simons & Associates Limited | Professional & scientific | 2004 |
| Barrington Court (Paignton) Limited | Households | 1988 |
| Barrington House Management Company (Torquay) Limited | Real estate | 1985 |
| Barton Property Limited | Real estate | 2008 |
| Barton Recreation Ground Limited | Arts & recreation | 2015 |
| Barton Villas (Dawlish) Management Company Limited | Hospitality | 2006 |
| Bass Beatz Productions Ltd | Other services | 2020 |
| Bastin Technical & Engineering Services Limited | Construction | 2020 |
| Bastins 2012 Limited | Wholesale & retail | 2012 |
| Battery on Ltd | Wholesale & retail | 2020 |
| Bauer Inc Ltd | Extraterritorial | 2023 |
| Baur Philippe Limited | Construction | 2017 |
| Bay Advocates Limited | Professional & scientific | 2005 |
| Bay Autos Recoveries & Transportation Ltd | Transport & logistics | 2023 |
| Bay Boilers Ltd | Construction | 2026 |
| Bay Building Ltd | Construction | 2018 |
| Bay Care Digital Ltd | Health & social care | 2024 |
| Bay Care Group Holdings Ltd | Financial services | 2024 |
| Bay Care Ventures Ltd | Financial services | 2024 |
| Bay Comps Limited | Other services | 2025 |
| Bay Developments (SW) Limited | Real estate | 2019 |
| Bay Exterior Cleaning Ltd | Administrative & support | 2026 |
| Bay Letts Ltd | Real estate | 2024 |
| Bay Office Services Ltd | Administrative & support | 2023 |
| Bay Plumbing and Heating Ltd | Construction | 2019 |
| Bay Quality Investment Ltd | Households | 2019 |
| Bay Roofing SW Limited | Construction | 2009 |
| Bay Spice Tandoori Limited | Hospitality | 2013 |
| Bay Taxis Ltd | Transport & logistics | 2024 |
| Bay Therapy Limited | Administrative & support | 2005 |
| Bay Ventures South West Ltd | Wholesale & retail | 2026 |
| Bay Woodburners Ltd | Construction | 2023 |
| Baybridge Services UK Limited | Professional & scientific | 2020 |
| Baycare Recruitment Limited | Administrative & support | 2025 |
| Baycave Ltd | Wholesale & retail | 2018 |
| Bays Brewery Limited | Manufacturing | 2006 |
| Bayside Property Services Ltd | Administrative & support | 2026 |
| Baystone Projects Ltd | Construction | 2025 |
| Baytech (SW) Ltd | Arts & recreation | 2024 |
| Baytek Office Solutions Limited | Manufacturing | 2008 |
| Baythorpe Lodge Limited | Households | 1979 |
| Bayview Devon Investment Ltd | Real estate | 2024 |
| Bazuru Ltd. | Wholesale & retail | 2020 |
| BBQ Hospitality Ltd | Hospitality | 2026 |
| BCS Computers Limited | Manufacturing | 1995 |
| BDC (Torbay) Ltd | Manufacturing | 2004 |
| BDS Western Limited | Construction | 2011 |
| BE Bookless Ltd | Professional & scientific | 2021 |
| BE Well and Thrive UK Limited | Health & social care | 2022 |
| Beach House Holdings Ltd | Real estate | 2021 |
| Beacon Brew Co. Ltd | Wholesale & retail | 2025 |
| Bear Beginnings Ltd | Education | 2020 |
| Bear to the Rescue 2 Ltd | Real estate | 2024 |
| Beara Farm Ltd | Agriculture & fishing | 2025 |
| Bearacleave Limited | Construction | 2025 |
| Beasley & Harding Electrical Ltd | Construction | 2016 |
| Beaton Grange (Torquay) Management Company Limited | Real estate | 2008 |
| Beaufizzle Ltd | Wholesale & retail | 2017 |
| Beaumont Accounts Limited | Professional & scientific | 2009 |
| Beaver Press Limited | Information & communication | 2025 |
| Beazley Holdings Ltd | Wholesale & retail | 2025 |
| Beckerleg Properties Limited | Real estate | 1983 |
| Becky Bettesworth Limited | Wholesale & retail | 2014 |
| Bedroc Developments Ltd | Construction | 2023 |
| Bedrock Booking Ltd. | Administrative & support | 2015 |
| Beech River Ltd | Real estate | 2025 |
| Beechcroft Care Homes Ltd | Health & social care | 2007 |
| Beechcroft Home Limited | Health & social care | 2019 |
| Beef Wellington Limited | Hospitality | 2022 |
| Beeja 2 Limited | Wholesale & retail | 2014 |
| Beer Haven Inns Ltd | Hospitality | 2024 |
| Belgrave Property (Renaissance) Management Company Ltd. | Households | 2007 |
| Belgrave Property Investments Ltd | Real estate | 2016 |
| Belgrave Property Lettings Ltd | Real estate | 2017 |
| Belgrave Property Ltd | Real estate | 2009 |
| Bellatom Limited | Information & communication | 2012 |
| Belle Court Management Ltd | Households | 2008 |
| Belmont Hotel (Sidmouth) Limited | Extraterritorial | 1951 |
| Belvedere (Paignton) Management Company Limited | Households | 2003 |
| BEN Coles Tree Consultancy Ltd | Professional & scientific | 2026 |
| BEN Florence Gardening Limited | Administrative & support | 2015 |
| BEN MEI Torquay Ltd | Hospitality | 2023 |