| Autoalb Rent Limited | Wholesale & retail | 2025 |
| Autodg Ltd | Wholesale & retail | 2025 |
| Autohaus Vehicle Solutions Ltd | Wholesale & retail | 2022 |
| Autohome Corporate Ltd | Wholesale & retail | 2013 |
| Autohome Insurance Limited | Financial services | 1974 |
| Autohome International Ltd | Other services | 1973 |
| Autohome Limited | Other services | 1971 |
| Autoleads AI Ltd | Information & communication | 2025 |
| Autolime Ltd | Extraterritorial | 2023 |
| Automata Holdings Limited | Professional & scientific | 2006 |
| Automate Northampton Ltd | Wholesale & retail | 2025 |
| Automatic Systems Equipment U.K. Limited | Construction | 1993 |
| Automationjc Ltd | Professional & scientific | 2023 |
| Automit Group Limited | Wholesale & retail | 2019 |
| Automotive Engineering (Northants) Limited | Wholesale & retail | 2016 |
| Automotive Products Ltd | Manufacturing | 2024 |
| Autoplus Northampton Limited | Wholesale & retail | 2012 |
| Autoplustyres Ltd | Wholesale & retail | 2019 |
| Autoprograming Ltd | Wholesale & retail | 2023 |
| Autos Elvado Ltd | Wholesale & retail | 2025 |
| Autoscreen Repairs Ltd | Wholesale & retail | 2005 |
| Autosphere Ltd | Wholesale & retail | 2022 |
| Autosprays 15 Ltd | Wholesale & retail | 2025 |
| Autotecnick UK Ltd | Wholesale & retail | 2024 |
| Autotransporti Vanessa and Maya Ltd | Transport & logistics | 2025 |
| Autoveiz Ltd | Administrative & support | 2023 |
| Autovexpremium Limited | Administrative & support | 2026 |
| Autumn Energy Ltd | Construction | 2021 |
| Autumn Mechanical Services Limited | Construction | 1997 |
| AV Cladd Ltd | Construction | 2023 |
| AV Cladding Ltd | Construction | 2020 |
| AV Hair Ltd | Other services | 2024 |
| AV Heritage Property Ltd | Real estate | 2025 |
| AV Hughes Properties Ltd | Real estate | 2021 |
| AV Shipping Limited | Transport & logistics | 2025 |
| AV Trans 1972 Limited | Wholesale & retail | 2022 |
| AVA Care Recruitment Ltd | Health & social care | 2020 |
| AVA Care Services Ltd | Health & social care | 2023 |
| AVA Cataleya Ltd | Health & social care | 2023 |
| AVA Clarice Ltd. | Wholesale & retail | 2023 |
| Avalle UK Limited | Financial services | 2024 |
| Avalon Cars Limited | Wholesale & retail | 2009 |
| Avalon Management (Rothwell) Company Limited | Households | 1990 |
| Avalon Tours Limited | Administrative & support | 2012 |
| Avant Garde (Wellingborough) Limited | Other services | 2007 |
| Avant-Garde Roofing Solutions Limited | Construction | 2009 |
| Avanta Living Limited | Real estate | 2026 |
| Avanti Dental Limited | Health & social care | 2019 |
| Avanti Group Solutions Limited | Administrative & support | 2010 |
| Avantre Limited | Professional & scientific | 2022 |
| Avatar Project Solutions Limited | Hospitality | 1997 |
| Avature Consultancy Ltd | Information & communication | 2019 |
| AVB Construction Ltd | Construction | 2015 |
| Avc-Partner Ltd | Transport & logistics | 2019 |
| AVD Logistics Ltd | Transport & logistics | 2025 |
| AVE Logistics Ltd | Transport & logistics | 2026 |
| Avelo Digital Ltd | Information & communication | 2026 |
| Avenira Limited | Wholesale & retail | 2025 |
| Aventus Care Limited | Health & social care | 2015 |
| Aventus Media Ltd | Information & communication | 2024 |
| Aventus Technologies Limited | Information & communication | 2020 |
| Avenue Apartments (Northampton) Limited | Real estate | 2003 |
| Avenue Ceramics Limited | Wholesale & retail | 2014 |
| Avenue Nannies Ltd | Education | 2000 |
| Avenue Nurseries Limited | Education | 2002 |
| Avenue Professional Visa Services Ltd | Professional & scientific | 2025 |
| Avenues Design and Build Limited | Construction | 2011 |
| Avera Pure Ltd | Manufacturing | 2020 |
| Avery (Glenmoor) Limited | Health & social care | 2014 |
| Avery (Lucas Court) Limited | Health & social care | 2014 |
| Avery at Loxley Park (Homecare) Limited | Health & social care | 2006 |
| Avery at Loxley Park (Operations) Limited | Health & social care | 2007 |
| Avery at the Miramar (Operations) Limited | Health & social care | 2000 |
| Avery Cannock Opco Limited | Extraterritorial | 2019 |
| Avery Care (Cannock) Limited | Professional & scientific | 2014 |
| Avery Healthcare Developments Limited | Extraterritorial | 2013 |
| Avery Healthcare Group Limited | Professional & scientific | 2013 |
| Avery Healthcare Holdings Limited | Professional & scientific | 2016 |
| Avery Healthcare Limited | Extraterritorial | 2008 |
| Avery Healthcare Management Limited | Extraterritorial | 2009 |
| Avery Holdco Cannock Limited | Professional & scientific | 2015 |
| Avery Homes (Cannock) Limited | Health & social care | 2000 |
| Avery Homes (Nelson) Limited | Health & social care | 2008 |
| Avery Homes Bracknell Limited | Health & social care | 2014 |
| Avery Homes Clevedon Limited | Health & social care | 2014 |
| Avery Homes Cliftonville Limited | Health & social care | 2008 |
| Avery Homes Derby Limited | Health & social care | 2013 |
| Avery Homes Downend Limited | Health & social care | 2014 |
| Avery Homes Droitwich Limited | Health & social care | 2018 |
| Avery Homes Grove Park Limited | Health & social care | 2015 |
| Avery Homes Hanford Limited | Health & social care | 2011 |
| Avery Homes Hatfield Limited | Health & social care | 2010 |
| Avery Homes Hinckley Limited | Health & social care | 2013 |
| Avery Homes Kingstanding Limited | Extraterritorial | 2013 |
| Avery Homes Kirkstall Limited | Health & social care | 2009 |
| Avery Homes Lichfield Limited | Extraterritorial | 2007 |
| Avery Homes Moston Limited | Health & social care | 2009 |
| Avery Homes Newcastle UL Limited | Health & social care | 2009 |
| Avery Homes Nominee 1 Limited | Real estate | 2013 |
| Avery Homes Nominee 2 Limited | Real estate | 2013 |