| Anps Healthcare Services Ltd | Health & social care | 2023 |
| Anpthapwes Ltd | Financial services | 2026 |
| Anrose Management Ltd | Real estate | 2014 |
| ANS Advisory Limited | Professional & scientific | 2024 |
| Ansari Property Services Ltd | Real estate | 2023 |
| Anshaw Management Services Limited | Administrative & support | 2023 |
| Anson Estates Property Management Ltd | Real estate | 2010 |
| ANT Trucking Services Ltd | Transport & logistics | 2025 |
| Anta Group Limited | Professional & scientific | 2025 |
| Antares Consultancy Limited | Administrative & support | 2022 |
| Anthony Colins Limited | Manufacturing | 2014 |
| Anthony James Property Investments Ltd | Real estate | 2024 |
| Anthony John Atkinson Limited | Professional & scientific | 2025 |
| Anthony Stuart (Bolton) Limited | Wholesale & retail | 1983 |
| Anthony Walker Ltd | Information & communication | 2023 |
| Anthropinos Consultancy Ltd | Information & communication | 2016 |
| Antiquecentral Ltd | Wholesale & retail | 2023 |
| Antlaur Property Limited | Real estate | 2023 |
| Antler Haulage Ltd | Transport & logistics | 2022 |
| Anton&Irena Limited | Construction | 2013 |
| Antoniomarie Limited | Health & social care | 2018 |
| Antonius Consultancy Limited | Information & communication | 2016 |
| Antur Performance Ltd | Wholesale & retail | 2024 |
| Anwaar Thobes Ltd | Wholesale & retail | 2024 |
| Anwar Services Limited | Transport & logistics | 2021 |
| ANY One UK and London Ltd | Wholesale & retail | 2025 |
| Anya‘S Shop Ltd | Wholesale & retail | 2025 |
| Anydrop Services Limited | Wholesale & retail | 2026 |
| Anyes Property Ltd | Real estate | 2025 |
| Anything Everything Ltd | Hospitality | 2018 |
| Anytime After Nine Limited | Administrative & support | 1993 |
| Anywhere Technologies Limited | Information & communication | 2020 |
| Anziah Ltd | Wholesale & retail | 2025 |
| AO B2B Limited | Extraterritorial | 2019 |
| AO Business Limited | Extraterritorial | 2019 |
| AO Care Limited | Extraterritorial | 2019 |
| AO Club Limited | Extraterritorial | 2019 |
| AO Deutschland Limited | Wholesale & retail | 2011 |
| AO Distribution Limited | Extraterritorial | 2019 |
| AO Logistics Limited | Extraterritorial | 2020 |
| AO Ltd | Financial services | 2009 |
| AO Mobile Limited | Professional & scientific | 2011 |
| AO Premium Club Limited | Extraterritorial | 2019 |
| AO Recycling Limited | Water & waste | 2005 |
| AO Rental Limited | Extraterritorial | 2019 |
| AO Retail Limited | Wholesale & retail | 2000 |
| AO Smile Foundation | Health & social care | 2014 |
| AO Trade Limited | Extraterritorial | 2019 |
| AO World PLC | Professional & scientific | 2005 |
| AOB Financial Solutions Limited | Information & communication | 2018 |
| AOC Bolton Limited | Health & social care | 2013 |
| Aocr Limited | Professional & scientific | 2006 |
| AOM + MO Ltd | Professional & scientific | 2017 |
| AON Capital Ltd | Financial services | 2022 |
| AON Studios Ltd | Information & communication | 2025 |
| Aosa Care Services Ltd | Health & social care | 2023 |
| AP Cooperation Ltd | Wholesale & retail | 2025 |
| AP Designer & Co Limited | Wholesale & retail | 2025 |
| AP Enterprise NW Limited | Hospitality | 2025 |
| AP Memories Ltd | Arts & recreation | 2023 |
| AP Online Ltd | Wholesale & retail | 2025 |
| AP Packages Limited | Wholesale & retail | 2026 |
| AP Safety Services Ltd | Administrative & support | 2026 |
| AP Trading Ltd | Wholesale & retail | 2023 |
| AP Training Consultancy Limited | Other services | 2012 |
| AP Turner Limited | Professional & scientific | 2005 |
| AP23 Limited | Administrative & support | 2007 |
| AP92 Ltd | Wholesale & retail | 2019 |
| Apaito & Co Ltd | Professional & scientific | 2025 |
| Apao Engineering & IT Limited | Information & communication | 2022 |
| APB Electrical Ltd | Construction | 2025 |
| APC Land Solutions Limited | Real estate | 2019 |
| Apdc Properties Ltd | Arts & recreation | 2024 |
| Apex Applab Ltd | Information & communication | 2021 |
| Apex Business Ltd | Wholesale & retail | 2025 |
| Apex Commercial Developments Limited | Real estate | 2016 |
| Apex Compliance Systems Ltd | Information & communication | 2026 |
| Apex Consultants MCR Ltd | Professional & scientific | 2019 |
| Apex Courier&Delivery Services Ltd | Transport & logistics | 2022 |
| Apex CRM Solutions Ltd | Professional & scientific | 2026 |
| Apex Developments Roofings Solutions Ltd | Construction | 2023 |
| Apex Digital Card Ltd | Administrative & support | 2025 |
| Apex Exim Ltd | Wholesale & retail | 2025 |
| Apex Global Hub Ltd | Wholesale & retail | 2025 |
| Apex Group and Estates Limited | Households | 2024 |
| Apex Holdings Northwest Ltd | Financial services | 2018 |
| Apex Marketing (NW) Limited | Professional & scientific | 2025 |
| Apex Paraplanning Limited | Financial services | 2017 |
| Apex Performance Marketing Ltd | Professional & scientific | 2026 |
| Apex Pharma Ltd | Wholesale & retail | 2021 |
| Apex Premium Services Limited | Information & communication | 2018 |
| Apex Primary Care Ltd | Health & social care | 2026 |
| Apex Property Improvement Solutions Limited | Construction | 2026 |
| Apex Property Solutions (NW) Ltd | Professional & scientific | 2002 |
| Apex Prosperity Holdings Ltd | Real estate | 2026 |
| Apex Quarters Ltd | Real estate | 2024 |
| Apex Roofing and Building Ltd | Administrative & support | 2022 |
| Apex Tailored Flooring Ltd | Construction | 2009 |
| Apex UK Fashion Ltd | Wholesale & retail | 2016 |
| Apex Underfloor Heating and Screeds Limited | Construction | 2021 |