| Arcmed Ltd | Coleraine | 2010 |
| Arco Health Care Clinic Ltd | Widnes | 2024 |
| Arcon Care Services Limited | Birmingham | 2024 |
| Arcos Care Limited | Liverpool | 2025 |
| Arcot Dental Limited | Ellesmere Port | 2022 |
| Arcoth Limited | Nottingham | 2023 |
| Arcpdental Ltd | London | 2023 |
| Arcs Recovery Limited | Plymouth | 2023 |
| Arctic Healthcare Ltd | Newport | 2026 |
| Arctic House Distribution Ltd | Burnley | 2019 |
| Arctic Smiles Limited | Ascot | 2016 |
| Arctic Therapy Limited | Alloa | 2021 |
| Arcturus Clinic Limited | Totnes | 2017 |
| Arcturus Pillarstone Holdings Group Ltd | Sheffield | 2026 |
| Arcux Ltd | London | 2024 |
| Arcyon Ltd | Colchester | 2020 |
| ARD Care Ltd | Chorley | 2024 |
| ARD Cuan Care Homes Ltd | Newtownards | 2006 |
| ARD Medical Limited | Amersham | 2011 |
| ARD Northwest Limited | Cardiff | 2016 |
| ARD Therapies Limited | Gravesend | 2014 |
| Arda Medical GP Ltd | London | 2026 |
| Ardabili Limited | Newcastle Upon Tyne | 2025 |
| Ardalan Limited | Bristol | 2017 |
| Ardalan Smiles Ltd | London | 2021 |
| Ardale (Oakham) Limited | Welwyn Garden City | 2019 |
| Ardale (Potters Bar) Limited | Welwyn Garden City | 2023 |
| Ardale (Potters Grange) Limited | Welwyn Garden City | 2020 |
| Ardale (Welwyn Grange) Limited | Welwyn Garden City | 2020 |
| Ardani Consultancy Limited | Cardiff | 2023 |
| Arday Nanny Agency Limited | London | 2023 |
| Ardcroft Medical Clinic Ltd | Motherwell | 2023 |
| Ardeen Carehome Ltd | Dungannon | 2010 |
| Ardeen Maternity Limited | London | 2023 |
| Arden Breast Clinic Ltd | London | 2020 |
| Arden Dental Laboratory Limited | Solihull | 2005 |
| Arden Dentec Ltd | Stratford Upon Avon | 2015 |
| Arden Fernvale Group Ltd | London | 2026 |
| Arden Forest Care Limited | Kings Norton | 2018 |
| Arden Forest Ultrasound Ltd | Ullenhall | 2013 |
| Arden Healthcare Ltd | Wolverhampton | 2024 |
| Arden House Care Home Limited | Harrow | 2026 |
| Arden House Nursing and Care Ltd | Hitchin | 2022 |
| Arden House Projects | Leven | 2007 |
| Arden House Residential Home Ltd | Driffield | 2002 |
| Arden Medical (PVT) Limited | Smethwick | 2024 |
| Arden Occupational Health Limited | Solihull | 2021 |
| Arden Park Care Limited | Stourbridge | 1999 |
| Arden Partnership (Derby) Holdings Limited | Nottingham | 2007 |
| Arden Partnership (Derby) Limited | Nottingham | 2007 |
| Arden Partnership (Leicester) Holdings Limited | Nottingham | 2007 |
| Arden Partnership (Leicester) Limited | Nottingham | 2007 |
| Arden Partnership (Lincolnshire) Holdings Limited | Nottingham | 2006 |
| Arden Partnership (Lincolnshire) Limited | Nottingham | 2006 |
| Arden Primary Care Limited | Warwick | 2008 |
| Arden Psychology Services Ltd | Coventry | 2011 |
| Arden Residential Care Limited | Slough | 2021 |
| Arden Support Ltd | Birmingham | 2019 |
| Arden, Herefordshire & Worcestershire Primary Eyecare Ltd. | London | 2008 |
| Ardencraig Carehomes Ltd. | Glasgow | 2006 |
| Ardencray Ltd | Harrow | 2004 |
| Ardenlyx Care Solihull Limited | Birmingham | 2026 |
| Ardent Care & Support Ltd | Cheadle | 2023 |
| Ardent Care Connect Services Limited | Reigate | 2021 |
| Ardent Ceramics Ltd | Bradford | 2026 |
| Ardent Dental Care Ltd | Cardiff | 2018 |
| Ardent Joie Support Limited | Liverpool | 2024 |
| Ardent Living Ltd | Bromley | 2025 |
| Ardent Orpington Ltd | London | 2025 |
| Ardent Residential Children’S Services Ltd | Crystal Palace | 2011 |
| Ardent Sidcup Ltd | Sidcup | 2024 |
| Ardent Smile Ltd | London | 2021 |
| Ardent Support Ltd | Colwick | 2024 |
| Ardent Supported Living Services Limited | Gloucester | 2020 |
| Ardentia Care Limited | Sutton Coldfield | 2025 |
| Ardenwell Supported Living Ltd | Wellingborough | 2026 |
| Ardern Holdings Ltd | London | 2022 |
| Ardesia Aesthetics Holdings Ltd. | London | 2024 |
| Ardesia Aesthetics Ltd. | London | 2025 |
| Ardghal Ltd | Newry | 2022 |
| Ardgowan Hospice Limited | | 1981 |
| Ardgowan Properties Ltd. | Ayr | 2011 |
| Ardhanarishvara Spiritual Community C.I.C. | London | 2020 |
| Ardin Physiotherapy Limited | Bolton | 2014 |
| Arding West Secure Medical Ltd | Clitheroe | 2020 |
| Ardingly Aesthetics Limited | Worthing | 2021 |
| Ardington House Living Ltd | Northampton | 2023 |
| Ardis Ltd | Warrington | 2019 |
| Ardis Services Ltd | Henley-In-Arden | 2022 |
| Ardiya Care Ltd | Bansted | 2026 |
| Ardmillan Orthodontics Limited | Edinburgh | 2008 |
| Ardmonagh Family and Community Group Limited | Belfast | 1997 |
| Ardmore 66 Ltd | Ashford | 2025 |
| Ardmore House (Healthcare) Ltd | Belfast | 2024 |
| Ardmore Medical Ltd. | Birmingham | 2020 |
| Ardnahein Care Limited | Dunoon | 2014 |
| Ardnahein Estates Limited | Dunoon | 2014 |
| Ardnahein Home Care Limited | Dunoon | 2014 |
| Ardnoel Ltd | Tipton | 2024 |
| Ardot Ltd | Northampton | 2019 |