| Akela Consultancy Ltd. | Professional & scientific | 2002 |
| Alberts Collectables Limited | Professional & scientific | 2002 |
| Alchemy Garage Doors Limited | Construction | 2006 |
| Alder Sportswear Limited | Wholesale & retail | 1982 |
| Alexander Court (Crediton) Management Company Limited | Households | 2003 |
| Alford Engineering (South West) Limited | Manufacturing | 2003 |
| Alfordon Farms Limited | Agriculture & fishing | 2006 |
| ALL Powered UP Limited | Construction | 2003 |
| Allaspex Ltd | Construction | 2003 |
| Alleron Estate Limited | Other services | 2025 |
| Allparts Southwest Limited | Wholesale & retail | 2002 |
| Allsop & Pitts Limited | Wholesale & retail | 1972 |
| Almy & Thomas Limited | Professional & scientific | 2005 |
| Alpha Global Ltd | Construction | 2018 |
| Alpine Networks Ltd | Administrative & support | 2006 |
| Alpine Property and Maintenance Services Limited | Professional & scientific | 1963 |
| Alvian Ltd | Construction | 2007 |
| Ambios Limited | Education | 2001 |
| Ameropa UK Limited | Other services | 2002 |
| Amluc Limited | Manufacturing | 2000 |
| Amplitude Limited | Real estate | 1994 |
| Anchorwood Limited | Construction | 2015 |
| Andean Goose Ltd | Other services | 2014 |
| Andrews (South West) Limited | Construction | 2003 |
| Andy J. Dyer Limited | Real estate | 1972 |
| Andy Shore Garage Limited | Wholesale & retail | 2007 |
| Anglaise Limited | Wholesale & retail | 2025 |
| ANK Vision Homes Ltd | Real estate | 2025 |
| Anniss Transport and Plant Limited | Transport & logistics | 1988 |
| Application Centre Ltd. | Administrative & support | 1997 |
| APS Packaging Limited | Manufacturing | 2002 |
| Aquatrace (U.K.) Limited | Professional & scientific | 1999 |
| AR Consulting Solutions Ltd | Professional & scientific | 2003 |
| AR Tucker Limited | Transport & logistics | 2003 |
| Architecture UK Limited | Professional & scientific | 1998 |
| Ardeen Court | | 1994 |
| Aruba Property Developments Limited | Construction | 2006 |
| Arundell Arms Hotel Co.Limited | Hospitality | 1932 |
| ASB Associates Limited | Professional & scientific | 1997 |
| Ashburton Health Clinic Limited | Health & social care | 2007 |
| Ashburton Stove and Flue Limited | Manufacturing | 2007 |
| Asherah Arts Limited | Information & communication | 2017 |
| Ashley Heights Limited | Real estate | 2005 |
| Ashton Electrical Ltd | Energy | 2006 |
| Asphodel Services Ltd | Administrative & support | 2017 |
| Assure 4 Financial Solutions | | 2003 |
| Astley Roofing Limited | Construction | 2005 |
| ATM Developments Limited | Hospitality | 2003 |
| Audel Systems Limited | Information & communication | 2009 |
| Audience Media Ltd | Information & communication | 2004 |
| Auto-Graphic Design and Art Direction Limited | Administrative & support | 2007 |
| Autoclamp Industries Limited | | 1985 |
| Avifon Ltd | Administrative & support | 2020 |
| Avnee Harbour Store Ltd | Wholesale & retail | 2024 |
| Avocet RT Limited | Information & communication | 2003 |
| Axminster Printing Company Limited | Manufacturing | 1999 |
| B and M Decorators Ltd | Construction | 2003 |
| B and N Couriers Limited | Transport & logistics | 2003 |
| B D Motors Limited | Wholesale & retail | 2001 |
| B&H Developments Ltd | Construction | 2019 |
| B. PYM Limited | Construction | 2004 |
| B.C.Padfield & Company,Limited | Wholesale & retail | 1945 |
| Backupstores Limited | Manufacturing | 2000 |
| Baid & Co Limited | Real estate | 2005 |
| Baldwin Construction (South West) Limited | Construction | 2000 |
| Baltia Contracting Ltd | Administrative & support | 2017 |
| Baltic Wharf Limited | Transport & logistics | 2006 |
| Bamboo Crew Limited | Administrative & support | 2023 |
| Banburys (Carpets) Limited | Wholesale & retail | 1968 |
| Banburys Limited | Wholesale & retail | 1925 |
| Bar MEZ Limited | Hospitality | 2003 |
| Bare Knuckle Pickups Limited | Manufacturing | 2003 |
| Barlow GAS Services Limited | Construction | 2003 |
| Barnes of Ashburton Joinery Limited | Manufacturing | 2015 |
| Barnes of Ashburton Limited | Manufacturing | 2000 |
| Barnfield Crescent Limited | Real estate | 2002 |
| Barnstaple Boat Co. Ltd. | Wholesale & retail | 1996 |
| Barnstaple Masonic Hall Company Limited | Hospitality | 1964 |
| Bartons.Co.Uk Limited | Professional & scientific | 2001 |
| Bartows Mews Residents Association Limited | Professional & scientific | 1987 |
| Barum Friend Security Limited | Administrative & support | 1997 |
| Baseout Limited | | 1985 |
| Bavya Ltd | Transport & logistics | 2014 |
| Bay Energy Limited | Construction | 2007 |
| Bayview Building Company Limited | Construction | 2004 |
| BBH Chartered Architects Limited | Professional & scientific | 2005 |
| Beacon Apartments Property Management Limited | Households | 2024 |
| Beacon Blinds Limited | Extraterritorial | 1999 |
| Bechtle Limited | Wholesale & retail | 1996 |
| Bedford & Co Limited | Professional & scientific | 1999 |
| Beehive Hospitality Limited | Hospitality | 2015 |
| Beers Limited | Administrative & support | 2000 |
| Beers LLP | | 2006 |
| Belgrave Security Services Limited | Arts & recreation | 1985 |
| Bellbeat Limited | Agriculture & fishing | 1995 |
| Bellchambers and Moreton Limited | Professional & scientific | 2003 |
| Bennett Jewellers Limited | Wholesale & retail | 2000 |
| Bentley Property Devon Limited | Real estate | 1993 |
| Beohama Services Ltd | Other services | 2024 |
| Best Industrial Equipment Limited | Other services | 1994 |