| Beniprops Investments Ltd | Real estate | 2015 |
| Bennet Estates Limited | Real estate | 2026 |
| Bennett Clarke 1225 Ltd | Financial services | 2025 |
| Bennetts Real Estate Ltd | Real estate | 2020 |
| Bennik Developments Limited | Real estate | 2006 |
| Bensbuckets Ltd | Wholesale & retail | 2022 |
| Bephit Ltd | Professional & scientific | 2022 |
| Bera (SW) Ltd | Hospitality | 2026 |
| Bercham Property Ltd | Real estate | 2025 |
| Berete Fanta Sera (BFS) Ltd | Transport & logistics | 2023 |
| Bergin Limited | Professional & scientific | 2011 |
| Berkeley Chasse Ltd | Real estate | 2024 |
| Berkeley Park Management Company Ltd | Households | 2022 |
| Bernard's Acre | Hospitality | 2009 |
| Bernie Investments Limited | Wholesale & retail | 2019 |
| Berry Repair & Spraying Solutions Ltd | Professional & scientific | 2022 |
| Berrybrook Exminster Limited | Real estate | 2019 |
| Berrybrook Investments Ltd | Real estate | 2011 |
| Berrybrook Motors Limited | Wholesale & retail | 2002 |
| Berrymeadows Developments Limited | Real estate | 1993 |
| Berrywood Court Management Company Limited | Households | 2025 |
| Besley & Copp Limited | Wholesale & retail | 1898 |
| Bespa Holdings Limited | Financial services | 2022 |
| Bespa Ltd | Construction | 1997 |
| Bespoke Britannia Limited | Administrative & support | 2018 |
| Bespoke Britannia Security Limited | Other services | 2022 |
| Bespoke Financial Guidance Ltd | Administrative & support | 2009 |
| Best Chimney Clean Limited | Administrative & support | 2012 |
| Best Hand Car Wash Exeter Ltd | Administrative & support | 2020 |
| Best of the West Food Group Limited | Hospitality | 2018 |
| Best of the West Foodservice Limited | Extraterritorial | 2026 |
| Best Protect Online Ltd | Financial services | 2014 |
| Best Tyres Autocentre Limited | Wholesale & retail | 2019 |
| Bestpmc Limited | Manufacturing | 2022 |
| Better Build (SW) Ltd | Construction | 2019 |
| Better Build Construction Works Ltd | Construction | 2023 |
| Better Build DW Ltd | Construction | 2022 |
| Better Build Exeter Ltd | Construction | 2022 |
| Better Build Isca Ltd | Construction | 2023 |
| Better Build Major Works Ltd | Construction | 2023 |
| Better Build ST Ltd | Construction | 2022 |
| Better Build STP Ltd | Construction | 2022 |
| Better Build Whipton Ltd | Construction | 2022 |
| Better Counsel Ltd. | Professional & scientific | 2018 |
| Better Design Ltd | Information & communication | 2023 |
| Bettervest Crowd Limited | Financial services | 2024 |
| Betty's INK Ltd | Arts & recreation | 2025 |
| Between Bread Exeter Ltd | Hospitality | 2023 |
| BEV. Holden (Builders) Limited | Construction | 1977 |
| Bevill SW Ltd | Construction | 2025 |
| Bexhill Property Partners Ltd | Real estate | 2021 |
| Bexter Properties Limited | Real estate | 2022 |
| Beyexe Consulting Ltd | Information & communication | 2017 |
| Beyond Carbon Ltd | Agriculture & fishing | 2022 |
| Beyond Ordinary Ltd | Administrative & support | 2025 |
| Beyond Ventures Limited | Wholesale & retail | 2024 |
| Bezengaro Limited | Financial services | 2024 |
| Bffw Limited | Financial services | 2022 |
| Bfifa Limited | Financial services | 2014 |
| BG (SW) Ltd | Hospitality | 2026 |
| BHL Oriental Food Store Limited | Wholesale & retail | 2018 |
| Bhlassessments Ltd | Information & communication | 2025 |
| Bhof Capital Ventures Limited | Real estate | 2018 |
| Biangbiang Noodles Ltd | Hospitality | 2021 |
| Bick Accountants Limited | Professional & scientific | 2009 |
| Bideford Fast Food Ltd | Hospitality | 2018 |
| Big & World Ltd | Transport & logistics | 2024 |
| Big Boss Barber Ltd | Other services | 2023 |
| Big Door Productions Ltd | Other services | 2017 |
| Big Glasses Limited | Financial services | 2023 |
| Big Picture Design Limited | Professional & scientific | 2008 |
| Big Wave Media Limited | Administrative & support | 2007 |
| Bigfire Holdings Limited | Financial services | 2017 |
| Bigwave Growth Limited | Administrative & support | 2021 |
| Bilberry Properties Limited | Professional & scientific | 2013 |
| Bill Brewer Limited | Real estate | 2018 |
| Bill Harvey Associates Limited | Professional & scientific | 2002 |
| Billys Property Management Ltd | Real estate | 2017 |
| BIM Hives Ltd | Information & communication | 2024 |
| Binary Legal Services Ltd | Professional & scientific | 2013 |
| Bindi Projects Limited | Construction | 2024 |
| Bio-Agri Ltd | Professional & scientific | 2025 |
| Biogains Ltd | Professional & scientific | 2021 |
| Biogasad Ltd | Professional & scientific | 2012 |
| Biogashochreiter (UK) Ltd | Professional & scientific | 2012 |
| Biotech Business Limited | Professional & scientific | 2005 |
| Biox Consultants Limited | Other services | 1990 |
| Birch Court (Exeter) Management Company Limited | Households | 2002 |
| Birch Utility Services Limited | Agriculture & fishing | 2009 |
| Birchley Consulting Limited | Professional & scientific | 2021 |
| Birchstone Group Ltd | Construction | 2020 |
| Birchy Coffee House Ltd | Hospitality | 2025 |
| Bird Eyewear Ltd | Wholesale & retail | 2017 |
| Birdcage Walk Limited | Manufacturing | 2025 |
| Birdmask Studio Ltd | Information & communication | 2017 |
| Birdmilk Ltd | Health & social care | 2016 |
| Birthgiver Film Productions Ltd | Information & communication | 2025 |
| Biscardi's Ltd | Wholesale & retail | 2026 |
| Bishop Court Holdings Ltd | Real estate | 2019 |
| Bishop Fleming Audit Limited | Professional & scientific | 2011 |