| Amyla Limited | Financial services | 2019 |
| Amza Trans Ltd | Transport & logistics | 2026 |
| AN Accounting Ltd | Professional & scientific | 2022 |
| AN Bubar Montessori Ltd | Education | 2025 |
| AN DRY Cleaners Ltd | Other services | 2019 |
| AN Estates Group Ltd | Real estate | 2025 |
| AN Freight Ltd | Transport & logistics | 2026 |
| AN Group Ltd | Real estate | 2025 |
| AN Indian Summer Limited | Wholesale & retail | 2007 |
| AN Squared Ltd | Education | 2025 |
| AN Transport Solutions Ltd | Transport & logistics | 2026 |
| An&C Limited | Administrative & support | 2021 |
| ANA Kairiene Ltd | Construction | 2018 |
| ANA KAY Beauty Academy Ltd | Education | 2025 |
| ANA Mehta Ltd | Real estate | 2020 |
| Ana's Beauty Escape Ltd | Other services | 2026 |
| Anac Limited | Transport & logistics | 2021 |
| Anaesthesia Associates Ltd | Health & social care | 2009 |
| Anagenis Ltd | Professional & scientific | 2025 |
| Anagha Limited | Professional & scientific | 2024 |
| Anagram Films Ltd | Information & communication | 2011 |
| Anaiah Consultancy Limited | Professional & scientific | 2021 |
| Anaiya Dental Care Ltd | Health & social care | 2016 |
| Anaiya Limited | Administrative & support | 2012 |
| Analyticpal Ltd | Professional & scientific | 2021 |
| Analytyx Ltd | Information & communication | 2023 |
| Anamax (Holdings) Limited | Professional & scientific | 2009 |
| Anananze Group Limited | Wholesale & retail | 2025 |
| Anand Electrical Contractor Ltd | Construction | 2017 |
| Anand Film Company Limited | Information & communication | 2016 |
| Anandan Cullen & Co. Limited | Professional & scientific | 2003 |
| Ananse HQ Ltd | Professional & scientific | 2026 |
| Ananta Export UK Ltd | Wholesale & retail | 2019 |
| Ananta Hospitality Limited | Hospitality | 2026 |
| Ananta Physiotherapy and Wellness Clinic Limited | Health & social care | 2025 |
| Anantya Food Limited | Hospitality | 2024 |
| Ananya Trading Limited | Wholesale & retail | 2003 |
| Anasha Limited | Administrative & support | 2015 |
| Anashim Limited | Financial services | 2018 |
| Anassa Corporation Limited | Real estate | 2021 |
| Anassa Investments Limited | Real estate | 2018 |
| Anat Ltd | Other services | 2024 |
| Anatina Consulting Limited | Professional & scientific | 2005 |
| Anaya Consultancy Ltd | Information & communication | 2024 |
| Anaya Enterprises Ltd | Real estate | 2019 |
| Anaya Holdings Limited | Real estate | 2015 |
| Anaya Lounge Limited | Administrative & support | 2018 |
| Anaya Patel Ltd | Financial services | 2024 |
| Anbv Limited | Other services | 2021 |
| Ancanest Limited | Other services | 2022 |
| Anchor Data Systems Limited | Information & communication | 2013 |
| Anchor GAS Ltd | Professional & scientific | 2024 |
| Anchor Psychology Limited | Health & social care | 2021 |
| Anchor PTY Limited | Real estate | 2016 |
| Anchorage Nuvo Capital Limited | Households | 2020 |
| Ancora Assets Ltd | Health & social care | 2025 |
| AND Boom Ltd | Professional & scientific | 2024 |
| Andalos Study Services Ltd | Education | 2019 |
| Andalus Yacht Ltd | Transport & logistics | 2023 |
| Andana Ltd | Wholesale & retail | 2016 |
| Anderson Accountants Ltd | Professional & scientific | 2025 |
| Anderson Design Solutions Limited | Construction | 2003 |
| Anderton Associates Ltd | Professional & scientific | 2015 |
| Andhra Bhavan Wellington Place T/A Andhra Bhavan Ltd | Other services | 2025 |
| Andover Limited | Administrative & support | 1997 |
| Andp Properties Ltd | Real estate | 2025 |
| Andre & Rose Ltd | Real estate | 2022 |
| Andrea Ltd | Extraterritorial | 2026 |
| Andrea of Wembley (Harrow) Limited | Other services | 2006 |
| Andrea Property Services Ltd | Real estate | 2020 |
| Andrei Air Fittings Ltd | Construction | 2026 |
| Andrei Construct Ltd | Construction | 2017 |
| Andrew Butler Coaching Ltd | Professional & scientific | 2023 |
| Andrew Court (Freehold) Limited | Construction | 1988 |
| Andrew Fell Limited | Professional & scientific | 1997 |
| Andrew Fleming Florist Limited | Wholesale & retail | 2026 |
| Andrew Leverton Limited | Wholesale & retail | 1997 |
| Andrew Miller Gardens Ltd | Administrative & support | 2020 |
| Andrews Appliances Limited | Wholesale & retail | 2017 |
| Andrews Enforcement Limited | Administrative & support | 2014 |
| Andrews Land & Property Ltd | Real estate | 2025 |
| Andrey's Property Services Ltd | Construction | 2025 |
| Andrici Homes Ltd | Construction | 2018 |
| Andrici Ltd | Construction | 2018 |
| Androcare Limited | Health & social care | 2016 |
| Andromeda Business Consultants Limited | Administrative & support | 2022 |
| Andromeda Limited | Hospitality | 2020 |
| Andw Build Limited | Construction | 2021 |
| Andy Ltd | Wholesale & retail | 2018 |
| Andy Mays Scenery Limited | Arts & recreation | 2023 |
| Andy Wood Limited | Arts & recreation | 2004 |
| Andy&Cris Construct Ltd | Construction | 2021 |
| Andylux Ltd | Extraterritorial | 2017 |
| Andys Construction Ltd | Construction | 2020 |
| Aneesha Medical Limited | Health & social care | 2023 |
| Aneka Business Ltd | Wholesale & retail | 2025 |
| Anelda Fitness Limited | Arts & recreation | 2026 |
| Anelda Limited | Real estate | 2025 |
| Anelixis Ltd | Information & communication | 2018 |
| Anemonia Limited | Wholesale & retail | 2020 |