| Archibald and Davis Ltd | Wholesale & retail | 2024 |
| Archie Drives & Patios Ltd | Construction | 2019 |
| Archie's Atomic Ltd | Hospitality | 2023 |
| Archie's Didsbury Ltd | Hospitality | 2025 |
| Archie's Holdings Ltd | Financial services | 2026 |
| Archie's PR1 Ltd | Hospitality | 2026 |
| Archiedale Ltd | Financial services | 2022 |
| Archify Limited | Information & communication | 2011 |
| Archirama Ltd | Professional & scientific | 2008 |
| Architech Design Group Ltd | Professional & scientific | 2022 |
| Architectural Coating Solutions Ltd | Construction | 2014 |
| Architectural Steel Limited | Extraterritorial | 2025 |
| Architek BDC Ltd | Construction | 2016 |
| Architek MCR Ltd | Construction | 2025 |
| Archive Homestore Ltd | Wholesale & retail | 2014 |
| Archive Masters Limited | Information & communication | 2017 |
| Archived Silence Ltd | Wholesale & retail | 2026 |
| Archmoor Care Limited | Health & social care | 2009 |
| Archna Ltd | Wholesale & retail | 2011 |
| Archstone Properties Limited | Real estate | 2014 |
| Archway Investments MCR Ltd | Financial services | 2024 |
| Archway Walk Management Limited | Real estate | 2005 |
| Archwood Accountants Limited | Professional & scientific | 2005 |
| Archwood House Limited | Real estate | 2013 |
| Arcline Solutions Limited | Information & communication | 2026 |
| Arco Frozen Ltd | Wholesale & retail | 2018 |
| Arcoirisbuilders Ltd | Construction | 2023 |
| Arcongrove Limited | Households | 1978 |
| Arcons Bilder Ltd | Administrative & support | 2019 |
| Arcorp Ltd | Professional & scientific | 2026 |
| Arcos Employment Ltd | Professional & scientific | 2025 |
| Arcs Technical Services Ltd | Professional & scientific | 2023 |
| Arcs Trading Limited | Wholesale & retail | 2020 |
| Arcsett Limited | Manufacturing | 2020 |
| Arcsoft Solutions Limited | Information & communication | 2014 |
| Arctech Electrical Services Ltd | Construction | 2024 |
| Arctic Aspen Studio Ltd | Information & communication | 2025 |
| Arctic Disc Limited | Professional & scientific | 2020 |
| Arctic Properties Limited | Real estate | 2006 |
| Arctic Sales Ltd | Wholesale & retail | 2026 |
| Arctic Shores Limited | Information & communication | 2013 |
| Arctic Trading Limited | Wholesale & retail | 2025 |
| Arcus Studios Ltd | Information & communication | 2010 |
| Arcx Limited | Real estate | 2024 |
| ARD Alriyf Pioneering Projects Ltd | Manufacturing | 2026 |
| Ard-Lift Elevator (UK) Ltd | Manufacturing | 2018 |
| Ardbeg & Co Property Ltd | Real estate | 2025 |
| Ardeen Investments Ltd | Real estate | 2020 |
| Ardella Real Estates Ltd | Real estate | 2026 |
| Arden Equities Limited | Extraterritorial | 2018 |
| Arden Global Ltd | Wholesale & retail | 2026 |
| Arden Packaging Limited | Manufacturing | 1979 |
| Arden Partners Asset Management Limited | Extraterritorial | 2009 |
| Arden Partners EBT Limited | Extraterritorial | 2004 |
| Arden Partners Limited | Financial services | 2002 |
| Arden Partners Nominees Limited | Professional & scientific | 2004 |
| Arden Wealth Management Limited | Extraterritorial | 2018 |
| Ardenix Estates Ltd | Real estate | 2026 |
| Ardenlea Enterprises Limited | Other services | 2017 |
| Ardens Legal Ltd | Professional & scientific | 2023 |
| Ardens Properties Ltd | Real estate | 2025 |
| Ardent Consult Limited | Professional & scientific | 2023 |
| Ardent Expert Services Ltd | Other services | 2020 |
| Ardent Group Holdings Ltd | Financial services | 2023 |
| Ardent Mind Tech Ltd | Information & communication | 2012 |
| Ardenton Properties Limited | Financial services | 2023 |
| Ardenton UK Limited | Financial services | 2023 |
| Ardeus Limited | Extraterritorial | 2021 |
| Ardex Construction Limited | Extraterritorial | 2021 |
| Ardex Solutions Limited | Wholesale & retail | 2024 |
| Ardh Almaaqal Ltd | Construction | 2022 |
| Ardhann Ltd | Professional & scientific | 2025 |
| Ardina Limited | Construction | 1971 |
| Ardrivecorp Ltd. | Wholesale & retail | 2017 |
| Ardwick Contracts Limited | Transport & logistics | 2015 |
| Ardwick Education Partnership Community Interest Company | Professional & scientific | 2019 |
| Ardwick Foodaholic Takeaway Ltd | Hospitality | 2026 |
| Ardwick Green Management Company Limited | Real estate | 2014 |
| Ardwick Grove Limited | Real estate | 2024 |
| Ardwick Kitchens Limited | Real estate | 2023 |
| Ardwick Property Management Limited | Real estate | 2026 |
| Ardwick Residences Ltd | Real estate | 2021 |
| ARE II LLP | | 2014 |
| Area Code Clothing Limited | Wholesale & retail | 2023 |
| Area Code Developments Ltd | Real estate | 2014 |
| Area Legal Consulting Limited | Professional & scientific | 2023 |
| AREA4 Commercials Ltd | Health & social care | 2016 |
| Areas Investments Ltd | Real estate | 2024 |
| Areeha Ltd | Health & social care | 2025 |
| Areez Global Ltd | Wholesale & retail | 2026 |
| Arehma Ltd | Professional & scientific | 2017 |
| Areinbuilder Limited | Construction | 2023 |
| Areivim Manchester | Other services | 2017 |
| Arella Ltd | Professional & scientific | 2022 |
| Arem Group Limited | Financial services | 2018 |
| Aremu Consulting Ltd | Information & communication | 2025 |
| Arena Experience Limited | Arts & recreation | 2026 |
| Arena Studios Ltd | Arts & recreation | 2021 |
| Arendell Projects Limited | Construction | 2021 |
| Areno Limited | Extraterritorial | 2021 |