| 1 ST Lawrence Green (Crediton) Management Company Limited | Households | 2020 |
| 119 and 121 Francis Road Limited | Real estate | 2025 |
| 12 Bar Music and Social Ltd | Wholesale & retail | 2024 |
| 12 Searle Street Management Company Limited | Real estate | 2014 |
| 1215 Holdings Ltd | Financial services | 2025 |
| 1ST Site Limited | Wholesale & retail | 2000 |
| 2 and 3 High Street Crediton Management Company Limited | Households | 2018 |
| 24 Hour Care Limited | Health & social care | 2010 |
| 33 Auckland Road Limited | Professional & scientific | 2001 |
| 43WRMC Ltd | Households | 2023 |
| 462 Limited | Professional & scientific | 2017 |
| 48 Cedars Road Freehold Limited | Households | 2018 |
| 52 Broadway Limited | Hospitality | 2018 |
| 80 High ST Management Limited | Real estate | 2002 |
| 862 Holdings Ltd | Real estate | 2022 |
| 89 London Road Cheltenham RTM Company Limited | Households | 2013 |
| A & J Electrical Engineering Ltd | Professional & scientific | 2020 |
| A & S Woodland Ltd | Agriculture & fishing | 2016 |
| A Addicott Plumbing and Heating Services Limited | Construction | 2006 |
| A E LEE Limited | Wholesale & retail | 2002 |
| A J Ford Haulage Limited | Transport & logistics | 2003 |
| A W Counselling Ltd | Professional & scientific | 2021 |
| A. White and Sons (Funeral Services) Limited | Other services | 2004 |
| A.E. Wakeman & Sons Limited | Wholesale & retail | 1977 |
| A.M.T Clear View Windows Ltd | Administrative & support | 2021 |
| A.M.T Property Rentals Ltd | Real estate | 2024 |
| A.Turners Management Ltd | Households | 2025 |
| A1 Electrics (South West) Limited | Construction | 2004 |
| AB Plumbing and Heating Devon Ltd | Construction | 2013 |
| ABS Construction SW Ltd | Construction | 2016 |
| Absolute Path Limited | Information & communication | 2018 |
| Access Communication Services Ltd | Education | 2020 |
| Actorfactor Limited | Professional & scientific | 2006 |
| Actv-Uk Ltd | Administrative & support | 2017 |
| Adaero Precision Components Limited | Manufacturing | 1997 |
| Adams of Crediton Limited | Wholesale & retail | 2004 |
| Adela Booth Associates Limited | Professional & scientific | 2003 |
| Adgk Property Ltd | Real estate | 2024 |
| ADM (Devon) Limited | Agriculture & fishing | 2003 |
| Adonea Internet Limited | Professional & scientific | 2009 |
| Adrian Payne Chimney Sweep Limited | Administrative & support | 2011 |
| AEC Photography Limited | Professional & scientific | 2019 |
| Agency for Art and Autism Ltd | Administrative & support | 2023 |
| Agentvalid Limited | Real estate | 1996 |
| Agnew VOS Consulting Ltd | Professional & scientific | 2025 |
| Agri Guards Ltd | Extraterritorial | 2021 |
| AH Gilbert & SON Limited | Construction | 2014 |
| AKF Services Limited | Construction | 2008 |
| Alan Leach Limited | Professional & scientific | 2012 |
| Aleksis Gailans Consulting Ltd | Information & communication | 2014 |
| Alex Linnell Consulting Limited | Professional & scientific | 2017 |
| Alfordon Contractors Limited | Agriculture & fishing | 2019 |
| Alight Productions Ltd | Education | 2025 |
| ALL Timber Frames Construction Ltd | Manufacturing | 2016 |
| ALL Timber Frames Ltd | Manufacturing | 2012 |
| ALL Told Creative Ltd | Information & communication | 2021 |
| Allen Geomatics Ltd | Professional & scientific | 2018 |
| Aller Barton Properties Limited | Real estate | 2022 |
| Amapola Wine Bar Ltd | Hospitality | 2024 |
| Ambit ND Limited | Professional & scientific | 2018 |
| Amelie's Follies Limited | Wholesale & retail | 2009 |
| Amicus Environmental Services Ltd | Agriculture & fishing | 2019 |
| AMJ Cladding & Roofing SW Limited | Construction | 2021 |
| Amway Holdings Limited | Professional & scientific | 2025 |
| AMY Stone Limited | Health & social care | 2018 |
| Anaptys Limited | Professional & scientific | 1998 |
| Anchor Homecare SW Ltd | Other services | 2026 |
| Andrew Pike Builders Limited | Construction | 2005 |
| Andrew Hicks Engineering Limited | Manufacturing | 2004 |
| Andrew Spence Consultancy Ltd | Construction | 2017 |
| Animal MRI Limited | Professional & scientific | 2023 |
| Animationslate Limited | Information & communication | 2026 |
| Ankridge Biodiversity Limited | Agriculture & fishing | 2024 |
| Anora Collection Ltd | Wholesale & retail | 2022 |
| Antalya Top Barber Ltd | Other services | 2022 |
| Apex Sports Limited | Wholesale & retail | 2000 |
| Aqua Essentials Limited | Wholesale & retail | 2012 |
| Aquatonics Limited | Professional & scientific | 2000 |
| AR Hooper and Partners Ltd | Agriculture & fishing | 2014 |
| ARG Property Devon Limited | Construction | 2021 |
| Around the Clock Marketing and Events Limited | Information & communication | 2019 |
| Arque Building Ltd | Construction | 2004 |
| Arque Construction Ltd | Construction | 2004 |
| Arque Ltd | Construction | 2004 |
| Arrw Ltd | Construction | 2023 |
| Art in Reflection Support Groups CIC | Arts & recreation | 2024 |
| Artisan Roofing SW Limited | Construction | 2018 |
| Artistic Design and Renovations Ltd | Construction | 2021 |
| Ashgrove Kitchens Limited | Manufacturing | 1987 |
| Ashmore Building Company Ltd | Construction | 2022 |
| Ashweek Communications Ltd | Information & communication | 2018 |
| ASL Property Ltd | Construction | 2016 |
| ASM Consultancy Limited | Information & communication | 1995 |
| Aspire Planning Solutions Ltd | Professional & scientific | 2016 |
| Assassin's Fist Limited | Information & communication | 2011 |
| Assemblage Point Limited | Wholesale & retail | 2013 |
| Astracomm (ATM) Limited | Construction | 2001 |
| Atlantic Training Limited | Construction | 2012 |
| Atlas Construction SW Limited | Construction | 2023 |
| Aura Skin Aesthetics Limited | Other services | 2021 |