| Annelise House Management Company Ltd | London | 2024 |
| Annes Court Management Company Limited | Hayling Island | 1975 |
| Annesley House (Management) Limited | Southampton | 1974 |
| Annette Court Management Limited | Royston | 1990 |
| Annette Farrell Property Limited | Worcester Park | 2019 |
| Annie Homes Ltd | Luton | 2025 |
| Annie Mccall House Limited | | 1986 |
| Annie Mccall RTM Company Limited | London | 2021 |
| Annington Nominees Limited | London | 1997 |
| Annjam Residential Ltd | Northampton | 2022 |
| Anns Walk Bletchingley Management Limited | Redhill | 2007 |
| Annvale Manor Management Company Limited | Keady | 2022 |
| Anofara Properties Limited | Tamworth | 2018 |
| Anoop Court (Biggleswade) Limited | Bedford | 2018 |
| ANP Property Holdings Ltd | Kingswinford | 2024 |
| Anppd Ltd | Bampton | 2026 |
| Ansadec Limited | Leeds | 1985 |
| Ansbury House (Poundbury) Management Company Limited | Dorchester | 2015 |
| Anscombe Hosting Ltd | Cardiff | 2025 |
| Ansell House Management Limited | Crowborough | 2023 |
| Anselm Court Limited | Lytham St Annes | 1971 |
| Anselm Court Management Company Limited | Bury St. Edmunds | 1999 |
| Anseres Place Management Company (Stamford) Limited | Peterborough | 2012 |
| Anseres Place Management Limited | Glastonbury | 2003 |
| Ansford Inn Management Company Limited | Sherborne | 1987 |
| Ansley Hall Management Company Limited | Nuneaton | 1999 |
| Anson and Essex House Ltd | London | 2024 |
| Anson House (Cable Place, Hunslet) RTM Company Limited | Mildenhall | 2026 |
| Anson House (Southampton) RTM Company Limited | Fareham | 2016 |
| Anson Road Limited | Rickmansworth | 1990 |
| Anson Road Properties Limited | London | 2017 |
| Anson Street (Monton) Management Company Limited | Manchester | 2004 |
| ANSON25 Ltd | London | 2017 |
| Anstey Gardens Management Company Limited | Hertfordshire | 2017 |
| Anstey Hall Barns Management Company Limited | Royston | 2015 |
| Anstey House Management Company Limited | Leeds | 2025 |
| Anstey Management Company Limited | Salisbury | 2020 |
| Anstey Place (Leicester Road) Management Company Limited | Croydon | 2005 |
| Ansteys Court (TQ1 3TB) RTM Company Limited | Torquay | 2025 |
| Ansteys Court Management Company Limited | Bristol | 2005 |
| Anstis Court Management Company Limited | Sidmouth | 2003 |
| Answift Limited | Maidstone | 2015 |
| Antcourt Limited | London | 1995 |
| Antebe Abebrese Company Limited | Sheffield | 2024 |
| Anthology (Hale Works) Management Company Limited | London | 2018 |
| Anthology (Hoxton) Residents Management Company Limited | London | 2017 |
| Anthology (Stratford Mill) Management Company Limited | Birmingham | 2021 |
| Anthology (the Chimes) Management Company Limited | Birmingham | 2022 |
| Anthology (Wembley Parade) Management Company Limited | London | 2018 |
| Anthony Court Limited | Harrow | 1986 |
| Anthony Court RTM Limited | Torquay | 2010 |
| Anthony Properties Ltd | Ipswich | 2020 |
| Anthony Property Security Ltd | Thornton Heath | 2025 |
| Anthorne Park Management Limited | Potters Bar | 2006 |
| Anthus Mews Management Co. Limited | Middlesex | 1984 |
| Antler Property Ltd | Glasgow | 2024 |
| Antlia Court RTM Company Limited | Croydon | 2024 |
| Anton Management Company Limited | Andover | 1983 |
| Antonio Property Experts Ltd | Dartford | 2024 |
| Antrim Coast Properties Limited | Londonderry | 2025 |
| Antrim Gardens Management Company Limited | Coleraine | 2018 |
| Antrim Mansions Limited | London | 1993 |
| Antrim Road Management Ltd | Magherafelt | 2007 |
| Antro Freehold Group Limited | Purley | 2024 |
| Anuoluwa Property Ltd | Northolt | 2025 |
| Anvil Close Management Company Limited | Carlisle | 2025 |
| Anvil Court (Slough) Management Company Limited | Cambridge | 1994 |
| Anvil Court Management Company Limited | Broadstone | 1981 |
| Anvil Gardens Freehold Ltd | Coventry | 2021 |
| Anvil Gardens Management Ltd | Coventry | 2021 |
| Anvil House (Harpenden) Limited | Bishop'S Stortford | 1983 |
| Anvil House Management Co Ltd | Newry | 2007 |
| Anvil Place Residents Management Company Limited | Halesowen | 2025 |
| Anvill (Braintree) Management Company Limited | Cambridge | 2008 |
| Anwar TR Properties Ltd | Manchester | 2020 |
| Anwick Manor Management Company Limited | Sleaford | 2021 |
| Anworth Close Management Limited | Edgware | 1982 |
| ANY Student Homes Limited | Newcastle Upon Tyne | 2017 |
| Anyhold Limited | Buckhurst Hill | 2025 |
| Anything Property Group Ltd | Morden | 2025 |
| AOA Property Services Ltd | Slough | 2016 |
| Aofad Properties Ltd | Leeds | 2021 |
| AP Certs Ltd | Glasgow | 2021 |
| AP Cottages Limited | Coalville | 2020 |
| AP Property Management Ltd | Blackburn | 2025 |
| AP Walker Property Limited | Pontefract | 2025 |
| AP8 Manager Ltd | Birmingham | 2021 |
| APA Realty Limited | London | 2019 |
| Apaca Properties Management Limited | Rotherham | 2025 |
| Apar Limited | Harrow | 1999 |
| Apartment 001 Ltd | London | 2024 |
| Apartment 2 Limited | Wilmslow | 2015 |
| Apartment Block C (the Iron Works) Management Company Limited | Liverpool | 2026 |
| Apartment Block D (the Iron Works) Management Company Limited | Liverpool | 2026 |
| Apartment Property Management and Sales Ltd | London | 2023 |
| Apartment Sales Lettings Management Company Limited | London | 2024 |
| Apbt Ltd | Plymouth | 2025 |
| APC Crescent Properties Ltd | Scarborough | 2024 |
| APC Properties and Maintenance Ltd | Chelmsford | 2023 |
| Apee Investments Limited | Manchester | 2019 |