| Anslow Properties Ltd | Real estate | 2025 |
| Ansnhh Whole Sale and Parcel Service Ltd | Administrative & support | 2018 |
| Ansom Couriers Limited | Transport & logistics | 2025 |
| Anson Court Limited | Real estate | 1962 |
| Anson Street (Monton) Management Company Limited | Households | 2004 |
| Ansong Care Ltd | Health & social care | 2019 |
| Ansora Estates Ltd | Real estate | 2025 |
| Anssor Limited | Health & social care | 2019 |
| Ansxiy Ltd | Wholesale & retail | 2024 |
| ANT Carbon Ltd | Wholesale & retail | 2023 |
| ANT Hill Services Ltd | Professional & scientific | 2022 |
| ANT Landscapes Limited | Administrative & support | 2016 |
| ANT Nisso Ltd | Wholesale & retail | 2025 |
| ANT Technical Services Limited | Professional & scientific | 2020 |
| ANT Wilson Product Ltd | Information & communication | 2024 |
| Antaeus Ltd | Health & social care | 2019 |
| Antao Greer Communications Ltd | Professional & scientific | 2020 |
| Antaoboat International Commerce Ltd | Wholesale & retail | 2024 |
| Antara Health Limited | Health & social care | 2023 |
| Antarctica Limited | Health & social care | 2007 |
| Antares Associates Limited | Professional & scientific | 2021 |
| Antat Trading Co., Ltd | Wholesale & retail | 2025 |
| Antelope Commercial Estates Limited | Real estate | 2021 |
| Antelope Maidstone Ltd | Real estate | 2024 |
| Antenona Caring Retreat Limited | Real estate | 2025 |
| Antfarm Film Services Ltd. | Information & communication | 2023 |
| Anthem Estates Limited | Real estate | 2007 |
| Anthem Media Limited | Information & communication | 2012 |
| Anthem Tuition Ltd | Education | 2012 |
| Anthem Ventures Ltd | Professional & scientific | 2022 |
| Antheris Repairs Ltd | Other services | 2025 |
| Anthiz Group Ltd | Information & communication | 2025 |
| Anthmen Investments Ltd | Real estate | 2025 |
| Anthony a. Barker Limited | Other services | 1966 |
| Anthony Austin Yachts Ltd | Wholesale & retail | 2026 |
| Anthony Baker Ltd | Professional & scientific | 2022 |
| Anthony Boardman Designs Limited | Professional & scientific | 1995 |
| Anthony Crolla Schools Boxing Limited | Arts & recreation | 2020 |
| Anthony Elijah Thomas Ltd | Extraterritorial | 2024 |
| Anthony Endfield IIP Settlement 2003 Limited | Professional & scientific | 2003 |
| Anthony Fletcher Installations Ltd | Construction | 2007 |
| Anthony General Trading Ltd | Wholesale & retail | 2020 |
| Anthony Greenhalgh Limited | Financial services | 2010 |
| Anthony Mark O'Brien Limited | Health & social care | 2015 |
| Anthony Medina IIP Settlement 2003 Limited | Professional & scientific | 2003 |
| Anthony the Witness Ltd | Arts & recreation | 2024 |
| Anthony Withers Installations Ltd | Construction | 2006 |
| Antimicrobial Materials Limited | Manufacturing | 2021 |
| Antinanco Limited | Administrative & support | 2022 |
| Antique Chinese Porcelain Limited | Wholesale & retail | 2010 |
| Antiques Boutique UK Ltd | Wholesale & retail | 2009 |
| Antler Financial Services Limited | Other services | 2023 |
| Anto Property Ltd | Manufacturing | 2021 |
| Anton O'Sullivan Properties Limited | Real estate | 2019 |
| Anton Powers Ltd | Information & communication | 2015 |
| Antonacci Hair & Beauty Ltd | Other services | 2019 |
| Antonelli Bros.Limited | Manufacturing | 1963 |
| Antoni and SON Ltd | Construction | 2024 |
| Antoni Fields IIP Settlement 2003 Limited | Professional & scientific | 2003 |
| Antonia Rose Ltd | Health & social care | 2022 |
| Antonio Cruz Makeup Ltd | Other services | 2024 |
| Antoniou SPV Ltd | Real estate | 2022 |
| Antony Edward Limited | Wholesale & retail | 2025 |
| Antony Hodari Holdings Limited | Professional & scientific | 2012 |
| Antony Khan Estates Ltd | Real estate | 2023 |
| Antony Mitev Ltd | Construction | 2024 |
| Ants Marketing Ltd | Other services | 2019 |
| Antton UK Ltd | Health & social care | 2018 |
| Antts Limited | Public administration | 2024 |
| Antunes Business Consulting Group Ltd | Professional & scientific | 2026 |
| Antz Junction | Health & social care | 2012 |
| Antz Network Limited | Professional & scientific | 2011 |
| Antz UK Limited | Administrative & support | 2014 |
| Anuh Limited | Administrative & support | 2019 |
| Anunciacao States Limited | Wholesale & retail | 2025 |
| Anunnaki Technologies Limited | Information & communication | 2024 |
| Anutide Limited | Information & communication | 2018 |
| Anvesi Ltd | Extraterritorial | 2023 |
| Anvil Creative Marketing Ltd | Manufacturing | 2020 |
| Anvil Gates and Fencing Ltd | Manufacturing | 2023 |
| ANW Holdings Ltd | Financial services | 2018 |
| Anwaa Alqarm for Transport Serviess Co Ltd | Wholesale & retail | 2025 |
| Anwar AL Badia for Modern Commercial Works Company Ltd | Wholesale & retail | 2026 |
| Anwar AL Deira Plus Ltd | Wholesale & retail | 2026 |
| Anwar Builders Ltd | Construction | 2024 |
| Anwar Eyecare Ltd | Health & social care | 2023 |
| Anwar IT Services Ltd | Professional & scientific | 2013 |
| Anwar Jones Properties Ltd | Real estate | 2026 |
| Anwar Legal Services Limited | Professional & scientific | 2025 |
| Anwar Sultana Limited | Health & social care | 2025 |
| Anwar TR Properties Ltd | Households | 2020 |
| Anwer Travel & Tours Ltd | Wholesale & retail | 2017 |
| Anxiety UK | Health & social care | 2005 |
| ANY Investment Ltd | Real estate | 2019 |
| ANY Property Ltd | Real estate | 2025 |
| ANY Waste North West Ltd | Water & waste | 2025 |
| Anya Lazarus Ltd | Professional & scientific | 2022 |
| Anyab Chauffeur Service Ltd | Transport & logistics | 2025 |
| Anyak Ltd | Health & social care | 2024 |
| Anycomp 2015 Ltd | Other services | 2015 |