| 12 Powderham Crescent Limited | Real estate | 2025 |
| 1248 Limited | Financial services | 2023 |
| 133 Graham Road Limited | Real estate | 2011 |
| 18 the Avenue (Tiverton) Management Limited | Real estate | 2007 |
| 19 ST Peter Street Management Company Limited | Extraterritorial | 2011 |
| 1ST Access Group Limited | Manufacturing | 2005 |
| 2 Bryantwood Road RTM Company Limited | Real estate | 2010 |
| 22 the Avenue Management Company Limited | Real estate | 2018 |
| 25 ST Leonards Road Exeter Management Company Limited | Administrative & support | 2007 |
| 3-5 Putney Bridge Road Ltd | Households | 2014 |
| 332 Topsham Road Ltd | Real estate | 2025 |
| 4 New Parade Tiverton Manco Limited | Households | 2018 |
| 4 Property Matters Limited | Real estate | 2004 |
| 4D Farm Services Limited | Agriculture & fishing | 2014 |
| 4D Properties & Maintenance Ltd | Real estate | 2025 |
| 4WND Limited | Professional & scientific | 2024 |
| 5 -9 the Square Amenity Ltd | Real estate | 2021 |
| 5 South View Flats Limited | Real estate | 1990 |
| 51 Elgin Crescent (Kensington) Residents' Association Limited | Other services | 1969 |
| 54 ST Peter Street Management Company Limited | Real estate | 2005 |
| 6, Raby Place Management (Bath) Limited | Households | 1976 |
| 8 Sutherland Street York Limited | Households | 2003 |
| 84 East Dulwich Road Freehold Limited | Households | 2013 |
| A & C Properties (SW) Ltd | Real estate | 2024 |
| A & K Farming Limited | Agriculture & fishing | 2014 |
| A & M Carpenters (SW) Limited | Construction | 2009 |
| A & M Properties (SW) Limited | Real estate | 2025 |
| A & S Auto Solutions Ltd | Wholesale & retail | 2023 |
| A + B Bookkeeping Limited | Professional & scientific | 2010 |
| A Bond Plumbing and Heating Limited | Construction | 2025 |
| A Coles Ltd | Professional & scientific | 2007 |
| A Little BIT Moore Limited | Wholesale & retail | 2021 |
| A T Building Services Limited | Extraterritorial | 2005 |
| A&J Weddings Ltd | Hospitality | 2025 |
| A1 Gates and Securities Limited | Administrative & support | 2010 |
| AB Commercial Solutions Ltd | Transport & logistics | 2021 |
| Abbeyfield Tiverton Society Limited(The) | Hospitality | 1973 |
| Abbeyside Consulting Ltd | Professional & scientific | 2025 |
| Abbot Traders Ltd | Extraterritorial | 2016 |
| Access Electrical (Services) Limited | Wholesale & retail | 1972 |
| Accolade Talent Group Limited | Administrative & support | 2026 |
| Acorn Agricultural Finance Limited | Financial services | 2010 |
| Acorn Rural Property (Consultants) LLP | | 2013 |
| Acrylux Limited | Manufacturing | 2000 |
| ACS Agricultural Contract Services Ltd | Agriculture & fishing | 2017 |
| Adams Plant Ltd | Construction | 2006 |
| Adhya Properties Limited | Real estate | 2025 |
| ADL Petroleum Services Limited | Professional & scientific | 1999 |
| Advanced Solutions and Technologies Limited | Professional & scientific | 2014 |
| Aegismark Ltd | Education | 2026 |
| AES Compliance & Testing Limited | Professional & scientific | 2006 |
| AES Sustainability Consultants Limited | Professional & scientific | 2005 |
| AES Sustainability Limited | Professional & scientific | 2019 |
| AGA Holdings (SW) Limited | Financial services | 2024 |
| Agility Plaza Ltd | Information & communication | 2021 |
| Agro-Vital UK Limited | Manufacturing | 2012 |
| Agrokom Ltd | Wholesale & retail | 2010 |
| AGV Holdings Limited | Financial services | 2025 |
| AGV Plumbing and Heating Limited | Construction | 2022 |
| AID Giving CIC | Administrative & support | 2023 |
| AIM Education and Mentoring (Achievement in Motion) Ltd | Education | 2022 |
| AJ Media Labs Limited | Other services | 2019 |
| AJM Transport Solutions Ltd | Transport & logistics | 2016 |
| AJM Treecare Limited | Agriculture & fishing | 2013 |
| Akilpur Talukpara Ltd | Hospitality | 2026 |
| AKK Agri Limited | Wholesale & retail | 2023 |
| Alcott Solutions Ltd | Agriculture & fishing | 2018 |
| Aldridge Mill Ltd | Agriculture & fishing | 2018 |
| Alex Snow Offroad Limited | Education | 2021 |
| Alex Snow Racing Limited | Education | 2023 |
| Alfie Field Limited | Real estate | 2017 |
| Align Collective Ltd | Professional & scientific | 2025 |
| Alistair Hill Construction Limited | Construction | 2010 |
| Allan Sichel Limited | Financial services | 1951 |
| Alltreeneeds Ltd | Agriculture & fishing | 2022 |
| Alternative Learning CIC | Education | 2026 |
| Amarantyne Designs Ltd | Professional & scientific | 2018 |
| AMB Rural & Commercial Ltd | Financial services | 2025 |
| Ambia Property Ltd | Real estate | 2024 |
| Amicus Healthcare Group Ltd | Wholesale & retail | 2025 |
| Ammotto Ltd | Manufacturing | 2024 |
| Anaesthetic Practitioner Services Limited | Health & social care | 2014 |
| Andrew Lathwell Design Limited | Administrative & support | 2002 |
| Angela Woolfenden Consultancy Ltd | Professional & scientific | 2023 |
| Angelfire Pyrotechnics Ltd | Other services | 2005 |
| Angharad Williams Planning Ltd | Professional & scientific | 2025 |
| Angie Dixey Ltd | Professional & scientific | 2012 |
| Anglo Directors Limited | Extraterritorial | 1991 |
| Anglo International Corporate Services Limited | Professional & scientific | 2016 |
| Anglo Offshore Limited | Professional & scientific | 1991 |
| Anglo Secretaries Limited | Extraterritorial | 1991 |
| Animal Behaviour Ltd | Professional & scientific | 2014 |
| Anne Gray Care Limited | Health & social care | 2003 |
| Anson House RTM Company Limited | Administrative & support | 2006 |
| Anstey Barton Limited | Professional & scientific | 2000 |
| Anstone Consulting Limited | Professional & scientific | 1998 |
| Antler PCS Ltd | Information & communication | 2022 |
| Anvil Security Ltd | Professional & scientific | 2021 |
| Aphrodite Regen Limited | Financial services | 2022 |
| Apple Tree Family Law Ltd | Professional & scientific | 2018 |