| Argyle Freehold Limited | | 2000 |
| Argyle House Ltd | London | 2022 |
| Argyle House,Southport Management Co.Limited | Southport | 1968 |
| Argyle Mansions (Boscombe) Limited | Bournemouth | 1958 |
| Argyle Mansions (Surbiton) Limited | Surbiton | 2008 |
| Argyle Mews Limited | Cambridge | 2010 |
| Argyle Property Limited | London | 2003 |
| Argyle Street Management Company Limited | Boston | 2015 |
| Argyle Way RMC Ltd | Rayleigh | 2021 |
| Argyll Court Limited | Blackpool | 2026 |
| Argyll Court Management Company Limited | Southampton | 2006 |
| Argyll Court RTM Limited | Shrewsbury | 2010 |
| Argyll Flat Management Company Limited | Bournemouth | 1987 |
| Argyll Hall RTM Company Limited | East Preston | 2025 |
| Argyll House Flats Management Co. (Westcliff-On-Sea) Limited | Westcliff-On-Sea | 1973 |
| Argyll Lodge Management Company Limited | Farnham | 2006 |
| Argyll Mansions Limited | London | 1996 |
| Argyll Mews Management Company Limited | New Milton | 1999 |
| Argyll Mill Management Company Limited | Settle | 2006 |
| Argyll Place (Kensington) Residents Management Company Limited | London | 2012 |
| Aria & Suriya UK Ltd | Bedworth | 2024 |
| Aria Apartments Management Company Limited | Leighton Buzzard | 2017 |
| Aria Court (Management) Limited | Nottingham | 2003 |
| Aria House Management Company Limited | Darlington | 1995 |
| Aria MGT Ltd | Woking | 2026 |
| Aria Newbury Park Residents Association Limited | Chelmsford | 2005 |
| Aria Property Management Ltd | Walsall | 2025 |
| Ariadne (Portsmouth) Management Company Limited | New Milton | 2006 |
| Ariadne Road RTM Company Limited | Swindon | 2008 |
| Ariah Properties Ltd | Cheltenham | 2025 |
| Ariana Homes Ltd | Troon | 2025 |
| Arianne Court Management Limited | Wallington | 1995 |
| Aridan Ltd | Horsham | 2019 |
| Ariel Court (Lancing) Residents Company Limited | Worthing | 1993 |
| Ariel Court Residents Association Limited | London | 2000 |
| Aries Commerce Ltd | Harrow | 2019 |
| Arih Properties Ltd | Stoke-On-Trent | 2023 |
| Arima Properties Limited | Barnet | 1993 |
| Arine Properties Limited | St. Neots | 2021 |
| Arini Properties Ltd | Peterborough | 2025 |
| Arinmill Limited | Surrey | 1984 |
| Arinstoke Limited | Betchworth | 1996 |
| Aripo Global Limited | Newcastle Upon Tyne | 2025 |
| Aris House Management Company Limited | Christchurch | 2023 |
| Arisdale (Phase 2) Residents Management Company Limited | New Milton | 2015 |
| Arisdale Avenue Thurrock Management Limited | Stevenage | 2010 |
| Arisdale Place (South Ockendon) Management Company Limited | Stevenage | 2013 |
| Arish House Ltd | Leicester | 2023 |
| Arismore Court Residents Company Limited | Southampton | 1978 |
| Arisound Limited | Brighton | 1995 |
| Ariss Properties Ltd | Hull | 2021 |
| Arista Court Management Company Limited | Epsom | 2006 |
| Aristoflats Limited | London | 1983 |
| Aristolte Flat Management Compan Y Limited | Reading | 1978 |
| Aristone Management Limited | Chippenham | 2025 |
| Aristotle Lane Estate Company Limited | Oxford | 2012 |
| Aristotle Management Limited | | 1998 |
| Aristotle Mews (Clapham) Residents Association Limited | London | 1998 |
| Aristotle Plato Ltd | Leeds | 2020 |
| Aristotle Road Limited | London | 2002 |
| Arivly Ltd | London | 2022 |
| Ariyola PVT Ltd | Coventry | 2018 |
| ARJ Property Management Limited | London | 2020 |
| Arjan Properties Ltd | Romford | 2024 |
| ARK 20 Limited | London | 2018 |
| ARK Court Limited | London | 1999 |
| ARK Design LAB Ltd | Harrow | 2025 |
| ARK Flats Management Company Limited | Hayle | 2007 |
| ARK INV Group Ltd | Hemel Hempstead | 2025 |
| ARK Property Portfolio Limited | Northampton | 2024 |
| ARK Sales & Lettings Ltd | Walsall | 2019 |
| ARK Squared Ltd | London | 2024 |
| ARK2233 Ltd | Wirral | 2026 |
| Arka House Management Limited | London | 2023 |
| Arkall Barns Management Company Limited | Tamworth | 2011 |
| Arkbridge 2014 Limited | London | 2014 |
| Arkdem Limited | Birmingham | 2018 |
| Arkell Park Management Company Limited | Farnham | 2025 |
| Arkells Court Management Company Limited | Wotton-Under-Edge | 1998 |
| Arkenside Mews Management Company Limited | Cirencester | 2012 |
| Arkham Studios Ltd | Watford | 2022 |
| Arkill Court Management Company Limited | Enfield | 1995 |
| Arkk Estates Ltd | Birmingham | 2024 |
| Arkle Chase Limited | Liverpool | 2020 |
| Arkle Court RTM Company Limited | Bromley | 2023 |
| Arkle Management Services Limited | London | 2025 |
| Arkley Drive Management Limited | Hillingdon | 2020 |
| Arkley Drive Residents Association Ltd | London | 2021 |
| Arkley Hall Management Company Limited | Arkley | 1988 |
| Arklow Court Management Company Limited | Rickmansworth | 1999 |
| Arklow Freehold Limited | Ramsgate | 2025 |
| Arklow Square Management Company Ltd | Broadstairs | 2020 |
| Arkoudi Asset Limited | London | 2016 |
| Arks Property Management Limited | Sutton | 2014 |
| Arksey & Co Properties Limited | Kingston Upon Hull | 2017 |
| Arkwright Road Limited | London | 2012 |
| ARL Properties Scotland Limited | New Lanark | 2019 |
| Arla Associates Limited | London | 2019 |
| Arla Court Management Company Limited | London | 2022 |
| Arle Road Cheltenham Estate Management Company Limited | Bourne End | 2005 |