| AR Scaffolding Limited | | 2009 |
| AR Wholesale Dealer Limited | Wholesale & retail | 2026 |
| AR Windows and Doors Ltd | Construction | 2025 |
| Ar&Ia Property Development Limited | Real estate | 2024 |
| Arabeh Consulting Ltd | Professional & scientific | 2019 |
| Arabella Blinds Ltd | Manufacturing | 2023 |
| Arabian Travel and Tour Limited | Administrative & support | 2015 |
| Arabic Puzzle Ltd | Wholesale & retail | 2022 |
| Araia Capital Ltd | Real estate | 2023 |
| Arasaka Tech Ltd | Wholesale & retail | 2025 |
| Aratech Limited | Information & communication | 2016 |
| Arauf Limited | Health & social care | 2009 |
| ARB Holdings Northwest Ltd | Agriculture & fishing | 2025 |
| Arboles Industrial Limited | Wholesale & retail | 2012 |
| Arboles U.K. Ltd. | Wholesale & retail | 1998 |
| Arbor Limited | Financial services | 2002 |
| Arbortec NW Ltd | Agriculture & fishing | 2022 |
| Arbow Ltd | Professional & scientific | 2022 |
| Arbury Logic Limited | Professional & scientific | 2021 |
| Arbworks North West Ltd | Administrative & support | 2024 |
| ARC Associates (NW) Ltd | Professional & scientific | 2015 |
| ARC Comcea Limited | Professional & scientific | 2021 |
| ARC Composites Ltd | Manufacturing | 2025 |
| ARC Costs Limited | Professional & scientific | 2014 |
| ARC Dimension Limited | Manufacturing | 2025 |
| ARC Estates Ltd | Construction | 2025 |
| ARC Renewables Ltd. | Construction | 2020 |
| Arcangel Productions Limited | Information & communication | 2006 |
| Arcas Technology Ltd | Administrative & support | 2022 |
| Arch Taxi Limited | Administrative & support | 2013 |
| Archbishop Temple Church of England Multi Academy Trust | Education | 2016 |
| Archees Bar & Restaurant Ltd | Professional & scientific | 2001 |
| Archer Cleaning Ltd | Administrative & support | 2026 |
| Archer Cleaning Services Limited | Administrative & support | 2003 |
| Archi Recruitment Ltd | Administrative & support | 2023 |
| Archie’S Estates Ltd | Construction | 2026 |
| Archipelago Leisure Limited | Professional & scientific | 2019 |
| Architektone Limited | Real estate | 2024 |
| Archive-X Limited | Wholesale & retail | 2022 |
| Archronos Limited | Information & communication | 2017 |
| Archway Bridge Communications Ltd | Information & communication | 2012 |
| Archway Care Limited | Administrative & support | 2002 |
| Ardayfio Properties Limited | Real estate | 2025 |
| Ardelon Limited | Wholesale & retail | 2025 |
| Arden Solicitors Ltd | Professional & scientific | 2024 |
| Ardency Hair and Beauty Limited | Other services | 2023 |
| Ardenmain Ltd | Wholesale & retail | 2001 |
| Ardent Property Group Ltd | Construction | 2025 |
| Ardin Physiotherapy Limited | Health & social care | 2014 |
| Ardmair Concepts Ltd | Professional & scientific | 2026 |
| Arena Creative Design Limited | Professional & scientific | 2011 |
| Arexam Limited | Wholesale & retail | 2023 |
| ARG Roofing Ltd | Construction | 2019 |
| Argaty Investments Limited | Real estate | 2007 |
| Argmt Ltd | Hospitality | 2025 |
| Argo Products Engineers Limited | Manufacturing | 1999 |
| Argus Management Limited | Professional & scientific | 2020 |
| Arham Builder Ltd | Construction | 2025 |
| Arhamuk Ltd | Wholesale & retail | 2022 |
| Ariana Afghan Ltd | Hospitality | 2026 |
| Aribs Holding Limited | Real estate | 2020 |
| Arieia Skin Clinic Ltd | Health & social care | 2025 |
| Arietis Healthcare UK Limited | Health & social care | 2020 |
| Ariluz Ltd | Wholesale & retail | 2025 |
| Arion Homes Ltd | Construction | 2021 |
| Arios Shakes Limited | Hospitality | 2025 |
| Ariquipa Ltd | Information & communication | 2019 |
| Arise Hospitality Ltd | Administrative & support | 2024 |
| Arise Multi-Skilled Maintenance Engineering Ltd | Professional & scientific | 2023 |
| ARK Accountants and Auditors Ltd | Professional & scientific | 2020 |
| ARK Audiologists Limited | Health & social care | 2022 |
| ARK Education Barn Limited | Education | 2022 |
| ARK Holding Group Ltd | Real estate | 2021 |
| ARK Impetus Ltd | Health & social care | 2012 |
| ARK Partnerships (NW) Ltd | Construction | 2021 |
| Arkadi Ltd | Transport & logistics | 2016 |
| Arkitecture Ltd | Real estate | 2023 |
| Arkwright Insurance Brokers Limited | Financial services | 2005 |
| Arley Ventures Limited | Financial services | 2013 |
| Arma Ltd | Professional & scientific | 2020 |
| Armeq Consultancy Ltd | Construction | 2019 |
| Armstrong Properties (Northwest) Limited | Professional & scientific | 1998 |
| Armstrongs Aggregates Limited | Mining & quarrying | 1986 |
| Armstrongs Estates Ltd | Real estate | 2023 |
| Armstrongs Transport (Wigan) Limited | Transport & logistics | 1979 |
| ARO Plastering Ltd | Construction | 2026 |
| Aroma Fastfoods Limited | Hospitality | 2013 |
| Aroma Sizzlers Limited | Hospitality | 2013 |
| Aroma Souk Ltd | Wholesale & retail | 2022 |
| Aromo Coffee Limited | Wholesale & retail | 2011 |
| Aroo Audio & Broadcast Ltd | Information & communication | 2024 |
| Aroosa Beauty Official Ltd | Wholesale & retail | 2020 |
| Aros Barber Bolton Limited | Other services | 2024 |
| ARP Automotive Racing Products Limited | Manufacturing | 2004 |
| ARP Europe Limited | Extraterritorial | 2004 |
| Arpenter Ltd | Professional & scientific | 2019 |
| Arries Services Ltd | Information & communication | 2020 |
| Arrm Solutions Limited | Administrative & support | 2020 |
| Arron Food Store (Bolton) Ltd | Wholesale & retail | 2019 |
| Arron Foods Store UK Limited | Wholesale & retail | 2025 |