| Analogue Seduction Ltd | Wholesale & retail | 2009 |
| Ananta Flavours Ltd | Hospitality | 2025 |
| Ananta Holdings Limited | Real estate | 2022 |
| Anaseldan Ltd | Wholesale & retail | 2025 |
| Anastase Ltd | Transport & logistics | 2025 |
| Anatolijus Parts Limited | Wholesale & retail | 2025 |
| Anaya ALI Ltd | Wholesale & retail | 2020 |
| Anayat’S Collection Ltd | Wholesale & retail | 2024 |
| Anays Logistics Ltd | Transport & logistics | 2025 |
| Anaysu Transport Ltd | Transport & logistics | 2025 |
| ANB Law Financial Services Ltd | Financial services | 2012 |
| ANB Law Solicitors Ltd | Professional & scientific | 2017 |
| ANB UK Ltd | Information & communication | 2009 |
| Anbillam Properties Limited | Real estate | 2024 |
| ANC Digital Ltd | Wholesale & retail | 2026 |
| ANC Property Holdings Ltd | Real estate | 2023 |
| Anchor Accounting Services Ltd | Professional & scientific | 2026 |
| Anchor Ventures Limited | Information & communication | 2016 |
| Anchorage Hotel Property Limited | Real estate | 2026 |
| AND Company Ltd | Financial services | 2025 |
| AND Logistics Ltd UK Ltd | Transport & logistics | 2023 |
| Anda Trans Ltd | Transport & logistics | 2023 |
| Anderson & Cooper Holdings Limited | Financial services | 2017 |
| Anderson Bodyshop Limited | Administrative & support | 2017 |
| Anderson Duff Associates Limited | Professional & scientific | 2020 |
| Anderson Motor Company Ltd. | Wholesale & retail | 2014 |
| Andersons Legal Services Ltd | Professional & scientific | 2021 |
| Anderworth Services Ltd | Professional & scientific | 2014 |
| Andii Ltd | Wholesale & retail | 2018 |
| Ando Logistics Ltd | Transport & logistics | 2020 |
| Andopi Consulting Limited | Professional & scientific | 2024 |
| Andra Delivery Ltd | Transport & logistics | 2017 |
| Andre Trans Ltd | Transport & logistics | 2016 |
| Andreea&Sarah Ltd | Wholesale & retail | 2025 |
| Andrew Butler Ltd | Real estate | 2015 |
| Andrew Curtis Construction Limited | Construction | 2005 |
| Andrew Johnson Building & Brickwork Contractors Ltd | Construction | 2017 |
| Andrew P Service Ltd | Transport & logistics | 2015 |
| Andrews Building Supplies Holdings Limited | Financial services | 2004 |
| Andrews Building Supplies Huntingdon Limited | Wholesale & retail | 2017 |
| Andrex Longhaul Ltd | Transport & logistics | 2026 |
| Andrey Logistics Ltd | Transport & logistics | 2024 |
| Andrzej Transport 79 Ltd | Transport & logistics | 2023 |
| Andsa Logistics Limited | Transport & logistics | 2016 |
| Andsons Builders Ltd | Construction | 2023 |
| Andsons Properties Limited | Real estate | 2021 |
| Andy Fast FIX Ltd | Wholesale & retail | 2018 |
| Aneeba Fashion & Beauty Ltd | Wholesale & retail | 2022 |
| Anen Group Limited | Professional & scientific | 2023 |
| Anesi Realty Group Limited | Real estate | 2024 |
| Anex-Uk Ltd | Professional & scientific | 2015 |
| Anexb UK Ltd | Professional & scientific | 2023 |
| Angad Aadit Investments Limited | Real estate | 2023 |
| Angela Karen Home Ltd | Manufacturing | 2019 |
| Angela Lettings Ltd | Real estate | 2024 |
| Angelics Estates Ltd | Real estate | 2023 |
| Angelina and Zara Besal Properties Ltd | Real estate | 2024 |
| Angelina IT Solutions Limited | Information & communication | 2016 |
| Angels 2004 Ltd | Hospitality | 2004 |
| Angemar Ltd | Construction | 2018 |
| Angle Advisory Ltd | Professional & scientific | 2026 |
| Anglia & Midland Sports Ltd | Financial services | 1994 |
| Anglia Accountancy Training Limited | Education | 2010 |
| Anglia Accountants Ltd | Professional & scientific | 2015 |
| Anglia Bearing Company Limited | Wholesale & retail | 1982 |
| Anglia Cars Ltd | Transport & logistics | 2025 |
| Anglia Ceramics Ltd | Other services | 2018 |
| Anglia Crushing & Screening Ltd | Mining & quarrying | 2022 |
| Anglia Health Care Limited | Administrative & support | 2018 |
| Anglia Home Furnishings Limited | Wholesale & retail | 2011 |
| Anglia Laundry Services Ltd | Other services | 2011 |
| Anglia Linen Group Ltd | Other services | 2019 |
| Anglia Motor Village Ltd | Wholesale & retail | 2017 |
| Anglia Motors Ltd | Wholesale & retail | 2023 |
| Anglia Precision Engineering Limited | Manufacturing | 1997 |
| Anglia Professional Training Limited | Education | 2012 |
| Anglia Rubber & Plastics Limited | Wholesale & retail | 2000 |
| Anglian House Management Co Limited | Households | 2016 |
| Anglian Radiology Associates Limited | Health & social care | 2005 |
| Angry Indian Ltd | Hospitality | 2021 |
| Ani&Vali Ltd | Transport & logistics | 2019 |
| Anike Stores Limited | Wholesale & retail | 2025 |
| Animacs Ltd | Information & communication | 2005 |
| Animagination Ltd | Wholesale & retail | 2015 |
| Animal Health Angels Limited | Financial services | 2023 |
| Animosus Gifts Limited | Wholesale & retail | 2025 |
| Animus Labs Ltd | Information & communication | 2026 |
| Anita Care Limited | Health & social care | 2020 |
| Ankana Ltd | Administrative & support | 2015 |
| Anker Stuy Coatings UK Limited | Manufacturing | 2019 |
| ANN Grafton Limited | Other services | 2003 |
| ANN Wanjiru Kariuki Limited | Health & social care | 2018 |
| Anna Dola Optics Limited | Health & social care | 2023 |
| Anna Hunt Limited | Other services | 2014 |
| Anna Pearce Holdings Limited | Real estate | 2019 |
| Anna SRL Ltd | Transport & logistics | 2022 |
| Anna Stone Design Limited | Professional & scientific | 2007 |
| Anna Teaching&Care Ltd | Health & social care | 2017 |
| Anna Tomson Research Consulting Ltd | Professional & scientific | 2023 |
| Anna Wojtkowiak Ltd | Other services | 2015 |