| Alma Shelter Ltd | Real estate | 2023 |
| Almesco Limited | Manufacturing | 1989 |
| Almond Family Holdings Limited | Real estate | 2020 |
| Almond Group Developments Limited | Financial services | 2023 |
| Almond Investment Group Limited | Financial services | 2023 |
| ALO Property Ltd | Real estate | 2020 |
| Along Avec Anna Limited | Wholesale & retail | 2020 |
| Alot&Task Ltd | Professional & scientific | 2019 |
| Alota Coffee Limited | Manufacturing | 2024 |
| Alpenford Limited | Professional & scientific | 1984 |
| Alpha Appointments (South West) Limited | Administrative & support | 2017 |
| Alpha Design Products Ltd | Professional & scientific | 2020 |
| Alphington Road Limited | Other services | 2013 |
| Alpine Development Partners Limited | Other services | 2009 |
| Alpine Heating & Plumbing Ltd | Construction | 2026 |
| Alpine Landscaping Ltd | Administrative & support | 2010 |
| ALR Medical Limited | Health & social care | 2021 |
| Alright Mate? CIC | Arts & recreation | 2019 |
| Alro Services Limited | Water & waste | 1999 |
| Alstanvy Ltd | Real estate | 2023 |
| Alstanvy Properties Ltd | Real estate | 2022 |
| Altered Dimension Ltd | Information & communication | 2025 |
| Alternative Realities Limited | Information & communication | 2016 |
| Altitude Asset Management Limited | Real estate | 2011 |
| Altitude PM LLP | | 2021 |
| Altitude Property Investments Limited | Real estate | 2010 |
| Alto Roofing and Cladding Limited | Construction | 2009 |
| Altoriva Limited | Professional & scientific | 2016 |
| Alvyn Ltd | Information & communication | 2025 |
| Alysamayphotography Ltd | Professional & scientific | 2026 |
| Alyssum (South West) Ltd | Other services | 2018 |
| AM & HAM Limited | Wholesale & retail | 2023 |
| AM & SA Howie Ltd. | Administrative & support | 2011 |
| AM Contracts Ltd | Construction | 2024 |
| AM REY Limited | Real estate | 2017 |
| AMA Training Ltd | Education | 2013 |
| Amalfi Bar & Cafe Limited | Hospitality | 2026 |
| Amamus Property Ltd | Real estate | 2023 |
| Aman (Exeter) Limited | Hospitality | 2026 |
| Amare Deus Enterprises Limited | Real estate | 2023 |
| Amarisk Limited | Professional & scientific | 2005 |
| AMB Dentistry Limited | Health & social care | 2020 |
| AMB Driving Tuition Ltd | Education | 2016 |
| Amber Hound Consulting Limited | Professional & scientific | 2022 |
| Amber Lettings Limited | Real estate | 2020 |
| Amber Linen Ltd | Wholesale & retail | 2026 |
| Amberson-Hullah - Licensed Conveyancers - Exeter Office | | 1995 |
| Amberstone Financial Planning Limited | Financial services | 2024 |
| Ambitions Support Ltd | Health & social care | 2014 |
| Ambitions Web Ltd | Professional & scientific | 2024 |
| AMC Motor Engineering Ltd | Wholesale & retail | 2016 |
| Amec South West Ltd | Construction | 2025 |
| Amelia House Limited | Health & social care | 2019 |
| Amex Storage Ltd | Transport & logistics | 2021 |
| AMF Limited | Manufacturing | 2004 |
| Amfora UK Ltd | Wholesale & retail | 2025 |
| AMH Fatigue Consultancy Services Ltd | Administrative & support | 2022 |
| Amica Consultancy Services Limited | Information & communication | 2018 |
| Amici Musicali Limited | Arts & recreation | 2001 |
| Amigo Pet Services Limited | Other services | 2017 |
| AMJ Holdings Ltd | Construction | 2019 |
| Amnar Property Limited | Real estate | 2015 |
| AMO Marketing Ltd | Professional & scientific | 2019 |
| Amos Lighting Limited | Wholesale & retail | 1999 |
| AMP Investments (Plymouth) Limited | Professional & scientific | 2015 |
| Amped Investments Limited | Energy | 2014 |
| Ampm Exeter Ltd | Construction | 2024 |
| Ampvalves Limited | Wholesale & retail | 2023 |
| AMR House Ltd | Financial services | 2024 |
| Amror Holdings Limited | Financial services | 2025 |
| Amror Limited | Professional & scientific | 2025 |
| AMS (Exeter) Ltd | Wholesale & retail | 2012 |
| AMS EOT Limited | Extraterritorial | 2021 |
| AMS GBL Limited | Financial services | 2023 |
| Amstel Doors UK Limited | Manufacturing | 2019 |
| Amtel Services (UK) Limited | Construction | 2006 |
| Amulree Limited | Health & social care | 2021 |
| AMY Hopkinson Garden Design Ltd | Administrative & support | 2020 |
| AN67 Limited | Professional & scientific | 2025 |
| Anartes Limited | Wholesale & retail | 2022 |
| Anatomy South West Limited | Arts & recreation | 2023 |
| ANAYAH121 Ltd | Hospitality | 2026 |
| ANB Transport Exeter Ltd | Transport & logistics | 2025 |
| Anbil Limited | Extraterritorial | 2010 |
| Anca Partnership Ltd | Real estate | 2021 |
| Ancadia Recruitment Ltd | Administrative & support | 2025 |
| Ancestral Lens Ltd | Professional & scientific | 2026 |
| Anchor Executive Search Limited | Administrative & support | 2002 |
| Anchor Point Fabrication Limited | Manufacturing | 2025 |
| Anchor Point GRP Limited | Manufacturing | 2025 |
| Ancile Limited | Information & communication | 2020 |
| Anderstrading Ltd | Wholesale & retail | 2026 |
| Andjax Homes Limited | Construction | 2016 |
| Andrew J S Clarke Ltd | Health & social care | 2019 |
| Andrew John Millar Ltd | Arts & recreation | 2019 |
| Andrew Leadbetter & Co Limited | Professional & scientific | 2002 |
| Andrew Mccarthy Ecology Limited | Professional & scientific | 2014 |
| Andrew Mccarthy Photography Ltd | Administrative & support | 2026 |
| Andrew Pindar Ltd | Manufacturing | 2013 |
| Andrew Yelland Limited | Real estate | 2003 |