| Avery Homes Nuneaton Limited | Health & social care | 2009 |
| Avery Homes Nuthall Limited | Health & social care | 2011 |
| Avery Homes Rugeley Limited | Health & social care | 2008 |
| Avery Homes SH Limited | Health & social care | 2013 |
| Avery Homes Stafford Limited | Health & social care | 2014 |
| Avery Homes Stratford Limited | Extraterritorial | 2004 |
| Avery Homes TH Limited | Health & social care | 2013 |
| Avery Homes Wellingborough Limited | Health & social care | 2012 |
| Avery Homes Weybridge Limited | Health & social care | 2009 |
| Avery Homes Wolverhampton Limited | Health & social care | 2009 |
| Avery Homes WSM Limited | Health & social care | 2010 |
| Avery Management Services Limited | Health & social care | 2009 |
| Avery of Leicester (Operations) Limited | Health & social care | 2009 |
| Avery Opco Lessee Limited | Professional & scientific | 2016 |
| Avestan Capital Limited | Professional & scientific | 2015 |
| Avex Property Services Limited | Construction | 2022 |
| AVG Limited | Health & social care | 2022 |
| AVH Empire Limited | Real estate | 2024 |
| AVI Motors Ltd | Transport & logistics | 2021 |
| Aviation Way Properties Limited | Real estate | 2012 |
| Avid Consultancy Ltd | Professional & scientific | 2020 |
| Avidity Hotels (Corby) Ltd | Hospitality | 2024 |
| Avidity Hotels (Edinburgh) Limited | Hospitality | 2025 |
| AVN Arena Limited | Professional & scientific | 2002 |
| Avocations Limited | Wholesale & retail | 2008 |
| Avohia Limited | Real estate | 2023 |
| Avoire Driving Ltd | Education | 2018 |
| Avolli Interior Design Ltd | Professional & scientific | 2024 |
| Avolli Retail Elevation & Creative Ltd | Professional & scientific | 2024 |
| Avon Beauty Limited | Administrative & support | 2018 |
| Avon Cosmetics Limited | Wholesale & retail | 1957 |
| Avon European Financial Services Limited | Professional & scientific | 2002 |
| Avon Limited | Extraterritorial | 2024 |
| Avon UK Holdings Limited | Professional & scientific | 2019 |
| Avondale Court (Thrapston) Limited | Households | 1987 |
| Avondale Services Limited | Construction | 2020 |
| Avora Capital Ltd | Other services | 2020 |
| AVR Transport Ltd | Transport & logistics | 2021 |
| AVS Hospitality Ltd | Hospitality | 2025 |
| AVS Property Investment Ltd | Real estate | 2026 |
| AVS Tiling Solutions Ltd | Construction | 2020 |
| Avsin Ltd | Hospitality | 2018 |
| AVT Gheorghe Ltd | Transport & logistics | 2020 |
| Avulos Gliss Ltd | Wholesale & retail | 2024 |
| Avvc Limited | Hospitality | 2011 |
| Avvrax Capital Finance Limited | Financial services | 2024 |
| Avvrax Holdings Limited | Real estate | 2021 |
| Avvrax Kettering Limited | Real estate | 2024 |
| Avvrax Ltd | Wholesale & retail | 2012 |
| Avvrax Property Management Limited | Real estate | 2021 |
| AW Engineering and Projects Ltd | Professional & scientific | 2025 |
| AW Kusza Estates Ltd | Real estate | 2022 |
| AWA Training Services Ltd | Education | 2018 |
| Award Stair Fitting Limited | Construction | 2019 |
| Awedizel Ltd | Transport & logistics | 2026 |
| Awen Psychotherapy Limited | Health & social care | 2024 |
| Awesome Wheels Limited | Wholesale & retail | 2012 |
| AWH Administration Ltd. | Information & communication | 2015 |
| AWM Developments (London) Limited | Construction | 2007 |
| AWP Mortgage Solutions Ltd | Financial services | 2016 |
| Awuramachia Enterprise Limited | Real estate | 2025 |
| Awuramachia Ltd | Real estate | 2022 |
| AX Anywhere Ltd | Information & communication | 2013 |
| AX3-INVESTMENTS Ltd | Real estate | 2019 |
| AXD Petro Consulting Limited | Professional & scientific | 2011 |
| Axel Construction Limited | Other services | 2016 |
| Axel Investments Limited | Financial services | 2021 |
| Axelle Holdings Limited | Construction | 2021 |
| Axel’S Support Ltd | Health & social care | 2023 |
| Axes Construction Ltd | Construction | 2019 |
| Axeval Logistics Ltd | Transport & logistics | 2021 |
| Axianta Tech Ltd | Information & communication | 2026 |
| Axiom Arlesey Limited | Real estate | 2017 |
| Axiom Arlesey Two Limited | Real estate | 2019 |
| Axiom Colebrooke Limited | Construction | 2019 |
| Axiom Developments Astra Limited | Construction | 2022 |
| Axiom Developments Limited | Construction | 2011 |
| Axiom Developments SPV 51 Limited | Construction | 2013 |
| Axiom Energy Group Limited | Professional & scientific | 1988 |
| Axiom Great Barford Limited | Construction | 2019 |
| Axiom Harrington Airfield Limited | Construction | 2021 |
| Axiom Kelmarsh Limited | Construction | 2021 |
| Axiovault Limited | Information & communication | 2025 |
| Axis Group Holdings Ltd | Financial services | 2023 |
| Axis Utility Group Ltd | Professional & scientific | 2026 |
| Axon Fibre Limited | Information & communication | 2023 |
| Axon Grid Holdings Limited | Financial services | 2026 |
| Axon Residential Limited | Real estate | 2026 |
| AXS Studio Ltd | Information & communication | 2025 |
| Axsystem Ltd | Information & communication | 2026 |
| Axxel Glazing Ltd | Construction | 2023 |
| AY Papi Ltd | Wholesale & retail | 2009 |
| AYA Afrim Ltd | Construction | 2023 |
| Ayaak LLP | | 2021 |
| Ayam Security Limited | Administrative & support | 2021 |
| Aydee Deals Limited | Wholesale & retail | 2023 |
| Ayepa Limited | Information & communication | 2018 |
| Ayesha C Ltd | Administrative & support | 2018 |
| Ayesha Suleman Ltd | Health & social care | 2023 |
| Aykayna Limited | Health & social care | 2018 |