| Bideford Window Cleaning Services Limited | Administrative & support | 2015 |
| Bidefordconnex CIC | Other services | 2022 |
| Bill Smith Jewellers Limited | Wholesale & retail | 2003 |
| Billy Wickfield Construction Services Ltd | Construction | 2023 |
| Black Crab Ltd | Real estate | 2022 |
| Black Rose Barbers Limited | Other services | 2018 |
| Blackingstone Ltd | Manufacturing | 2018 |
| Blak Property Holdings Limited | Real estate | 2021 |
| Blak Property Limited | Real estate | 2006 |
| Blake Maintenance Handyman Services Ltd | Construction | 2026 |
| Blast Properties Limited | Construction | 2005 |
| Blast Properties Number 2 Ltd | Construction | 2015 |
| Blights Motors Limited | Wholesale & retail | 2014 |
| Blkchurch Ltd | Wholesale & retail | 2025 |
| Blooms Weddings Limited | Wholesale & retail | 2015 |
| BLS Leather Supplies Ltd | Wholesale & retail | 2026 |
| Blue Bay (South West) Developments Ltd | Construction | 2009 |
| Blue Bay (South West) Holdings Limited | Financial services | 2022 |
| Blue Bay Leisure Holidays Limited | Hospitality | 2021 |
| Blue House Consultancy Ltd | Education | 2023 |
| Blue Light Cleaning and Property Management Services Limited | Health & social care | 2023 |
| Blue Soup Communications Limited | Professional & scientific | 2007 |
| Blueberry & Co Holdings Ltd | Financial services | 2019 |
| Blueberry Capital Limited | Other services | 2019 |
| Blueberry Estates Ltd | Real estate | 2019 |
| Blueberry Lodges Ltd | Hospitality | 2022 |
| Blueberry People Ltd | Administrative & support | 2019 |
| Blueberry Places Ltd | Hospitality | 2019 |
| Bluefinney & Balls Ltd | Hospitality | 2021 |
| Blueprint Build Limited | Construction | 2020 |
| Blueprint Woodworking Ltd | Manufacturing | 2024 |
| Bluewash Exterior Cleaning Ltd | Administrative & support | 2026 |
| Blueyonder Balconies & Balustrades Ltd | Construction | 2024 |
| BMC Atlantic Ltd | Real estate | 2020 |
| BMS (Devon) Ltd | Professional & scientific | 2024 |
| Board Breaks Ltd | Arts & recreation | 2023 |
| Bobby's BUS Ltd | Transport & logistics | 2010 |
| Bodbrook Limited | Households | 1984 |
| Bodyfix Therapy Ltd | Health & social care | 2022 |
| Bond Oxborough Phillips (Bideford) Ltd | Real estate | 2014 |
| Boode Farm Limited | Agriculture & fishing | 2019 |
| Bookmark Bidco Limited | Financial services | 2021 |
| Bookmark Debtco Limited | Financial services | 2022 |
| Bookmark Midco 1 Limited | Financial services | 2021 |
| Bookmark Midco 2 Limited | Financial services | 2021 |
| BOP Lettings & Management Ltd | Real estate | 2025 |
| Boswell.Pvt Limited | Professional & scientific | 2024 |
| Bowdendavis LLP | | 2023 |
| Boxxit Ltd | Other services | 2019 |
| Boyd Forestry Services Limited | Agriculture & fishing | 2019 |
| Braddicks and Sherborne Funeral Directors Ltd | Other services | 2015 |
| Branch and Phillips Ltd | Real estate | 2026 |
| Braunton Aggregates Limited | Mining & quarrying | 2002 |
| Brend Company Limited | Financial services | 2025 |
| Brend Estates Limited | Financial services | 2025 |
| Brend Garages Limited | Financial services | 2025 |
| Brewthers Ltd | Wholesale & retail | 2025 |
| BRG Building Ltd | Construction | 2026 |
| Brian Adams Limited | Agriculture & fishing | 2021 |
| Bridge Buildings Management Company Limited | Households | 2017 |
| Bridge Motor Company Ltd | Wholesale & retail | 2009 |
| Brigade House Bideford Ltd | Real estate | 2023 |
| Bright Sparks Nursery School Limited | Health & social care | 2020 |
| Brights of Bideford Limited | Real estate | 2010 |
| Brimsdown Limited | Real estate | 2001 |
| Broadcast Music Ltd | Information & communication | 2009 |
| Brosym Limited | Wholesale & retail | 2015 |
| BS Plumbing & Heating (Devon) Limited | Construction | 2008 |
| Buckham Limited | Real estate | 2016 |
| Bude Bait and Tackle Limited | Wholesale & retail | 2026 |
| Bude Carpentry and Building Ltd | Construction | 2021 |
| Bull Elephant Holdings Ltd | Real estate | 2023 |
| Bullco Limited | Construction | 2005 |
| Bulworthy Lodges Ltd | Hospitality | 2016 |
| Burney Properties Limited | Real estate | 1956 |
| Burrington Holdings Limited | Real estate | 2025 |
| Burrough Lawn Residents' Association (Bideford) Limited | Households | 1991 |
| Buttercombe Holdings Limited | Construction | 2015 |
| Buzz Electrical Wholesale Ltd | Wholesale & retail | 2024 |
| Byterocket Ltd | Information & communication | 2025 |
| C & L Restoration & Recovery Ltd | Construction | 2020 |
| C & P Metalwork Limited | Manufacturing | 1994 |
| C T Products Ltd | Manufacturing | 2024 |
| C Wharton Electrical Ltd | Construction | 2019 |
| C&L Plant Hire Ltd | Administrative & support | 2021 |
| C. D. Grounds & Estate Services Ltd | Administrative & support | 2018 |
| C. P. Jennings-Cleaning Services Limited | Other services | 2003 |
| C. R. Hollands Industrial Supplies Limited | Wholesale & retail | 1999 |
| C.L.S. Vanstone Ltd | Real estate | 2021 |
| C90ADVENTURES Ltd | Information & communication | 2020 |
| Cabana Group (Devon) Ltd | Hospitality | 2026 |
| Cadworks (South West) Ltd | Professional & scientific | 2006 |
| Caen Associates Limited | Professional & scientific | 2004 |
| Caen Homes Limited | Construction | 2002 |
| Cags Trading Ltd | Financial services | 2026 |
| Campana Ltd | Wholesale & retail | 2019 |
| Camper Comfort Limited | Wholesale & retail | 2024 |
| Candy N Ice Ltd | Hospitality | 2024 |
| Canns Contractors Limited | Agriculture & fishing | 2013 |
| Car Keys Direct South West Ltd | Wholesale & retail | 2026 |