| Aquara Ltd | Wholesale & retail | 2025 |
| Aquarium Plumbing Limited | Wholesale & retail | 2015 |
| Aquarius Canal Boat Builders Ltd | Manufacturing | 2019 |
| Aquarius Cleaning Solutions Limited | Other services | 2014 |
| Aquarius Consulting Ltd | Professional & scientific | 2023 |
| Aquarius Scaffolding (NW) Ltd | Construction | 2021 |
| Aquascaping Liverpool Ltd | Agriculture & fishing | 2023 |
| Aquatech Mechanical Ltd | Construction | 2023 |
| Aquidity Ltd | Professional & scientific | 2023 |
| Aquila MGA Holdings Limited | Professional & scientific | 2019 |
| Aquilla Digital Ltd | Information & communication | 2023 |
| Aquilo Renewable Energy Limited | Professional & scientific | 2025 |
| Aquirious Training Ltd | Education | 2019 |
| AR & ZR Limited | Health & social care | 2012 |
| AR 97 Ltd | Hospitality | 2026 |
| AR Climate Control Ltd | Construction | 2025 |
| AR IT Consultancy of UK Limited | Information & communication | 2020 |
| AR Machinery & Hire Limited | Wholesale & retail | 2025 |
| AR Oven Cleaning Ltd | Administrative & support | 2018 |
| AR Property Group Ltd | Real estate | 2016 |
| AR Property Management Ltd | Real estate | 2019 |
| AR Regal Beauty Ltd | Other services | 2025 |
| AR UK Services Ltd | Construction | 2025 |
| AR Williams Optical Ltd | Health & social care | 2017 |
| AR1 Developments Ltd | Real estate | 2015 |
| AR10 Developments Ltd | Real estate | 2022 |
| AR11 Developments Limited | Real estate | 2025 |
| AR12 Developments Limited | Real estate | 2025 |
| AR2 Developments Ltd | Real estate | 2017 |
| AR3 Developments Ltd | Construction | 2017 |
| AR4 Developments Ltd | Real estate | 2017 |
| AR5 Developments Limited | Real estate | 2020 |
| AR6 Developments Limited | Construction | 2020 |
| AR8 Developments Limited | Real estate | 2021 |
| AR9 Developments Ltd | Real estate | 2022 |
| Aracon Farming Limited | Agriculture & fishing | 2004 |
| Arago Consultancy Ltd | Information & communication | 2012 |
| Aram News Shop Ltd | Wholesale & retail | 2019 |
| Aran Kurdo Ltd | Real estate | 2024 |
| Aranda Limited | Other services | 2018 |
| Aras 1 Trading Limited | Wholesale & retail | 2021 |
| Arawai Limited | Real estate | 2022 |
| Araya Facilities Services Limited | Construction | 2014 |
| Arayce Limited | Real estate | 2020 |
| ARB (NW) Limited | Financial services | 2020 |
| ARB Liverpool Ltd | Construction | 2025 |
| Arbella Store L15 Ltd | Wholesale & retail | 2026 |
| Arbiter Automated Security Limited | Information & communication | 2026 |
| Arbitrage Global Limited | Financial services | 2024 |
| Arbor & IVY Limited | Manufacturing | 2025 |
| Arborvitae Care Services Ltd | Health & social care | 2023 |
| Arbuda Enterprise Limited | Hospitality | 2025 |
| Arbuthnot Support Services Ltd | Education | 2025 |
| ARC Commercial Management Ltd | Professional & scientific | 2025 |
| ARC Create Digital Limited | Information & communication | 2025 |
| ARC Creative Studio Limited | Administrative & support | 2018 |
| ARC FM Group Ltd | Construction | 2025 |
| ARC Holding Group Limited | Financial services | 2024 |
| ARC Hospitality Recruitment Solutions Ltd | Administrative & support | 2008 |
| ARC Recruitment Solutions Ltd | Administrative & support | 2020 |
| Arcadia Hotel Limited | Extraterritorial | 2022 |
| Arcadia Infrastructure Ltd | Professional & scientific | 2026 |
| Arcane Real Estate Consultants Ltd | Real estate | 2021 |
| Arcane Real Estate Limited | Real estate | 2016 |
| Arcfly Ltd | Real estate | 2022 |
| Arch Under the Bridge Limited | Other services | 1998 |
| Arch Window Company Ltd | Manufacturing | 2019 |
| Archademia Ltd | Education | 2021 |
| Archdiocesan Parish Centres Management Company Limited | Other services | 1997 |
| Archdiocesan Property Services Limited | Professional & scientific | 1995 |
| Archdiocese of Liverpool Primary School Improvement Trust | Education | 2017 |
| Archdiocese of Liverpool Secondary School Improvement Trust | Education | 2017 |
| Archer Chemicals Ltd | Wholesale & retail | 2021 |
| Archer Co Trading Limited | Professional & scientific | 2013 |
| Archetype M Investments Ltd | Extraterritorial | 2024 |
| Archge Limited | Construction | 2018 |
| Archi Base Ltd | Construction | 2019 |
| Archime Gates Limited | Manufacturing | 2025 |
| Archiphonic Ltd | Professional & scientific | 2018 |
| Architectural Emporium Ltd | Professional & scientific | 2009 |
| Architectural Investment Projects Limited | Construction | 2013 |
| Architecture Julien Denis Ltd | Professional & scientific | 2017 |
| Architecture Retreats Limited | Hospitality | 2020 |
| Architeh Ltd. | Professional & scientific | 2015 |
| Archroad Limited | Administrative & support | 2004 |
| Archu & Akshi Ltd | Wholesale & retail | 2022 |
| Arciform Limited | Arts & recreation | 2011 |
| Arclid Transport | | 1971 |
| Arclid Transport Limited | Transport & logistics | 1970 |
| Arclight Media Productions Limited | Information & communication | 2025 |
| Arclive Data Ltd | Information & communication | 2022 |
| Arcos Care Limited | Health & social care | 2025 |
| Arcseven Ltd | Information & communication | 2026 |
| Arct Trading Ltd | Hospitality | 2025 |
| Arctic Bay Ltd. | Real estate | 2013 |
| Arctic Skua Limited | Real estate | 2011 |
| Arctic Waters Limited | Wholesale & retail | 2011 |
| Arcticbeard Consulting Limited | Information & communication | 2024 |
| Arcticfields Limited | Wholesale & retail | 2023 |
| Arcwell Electrical & Energy Services Ltd | Construction | 2025 |