| AMJ Properties and Management Ltd | St. Albans | 2025 |
| AMJ Property Services Limited | Redruth | 2020 |
| Amlaak Property Management Ltd | London | 2018 |
| Amlets Place (Cranleigh) Management Company Limited | Salisbury | 2017 |
| Amloc Limited | Hove | 1990 |
| AMM Property Management Ltd | Liverpool | 2023 |
| Ammc Limited | Sidmouth | 2001 |
| Ammonite House RTM Company Limited | London | 2022 |
| Ammt Consultancy Ltd | Dunstable | 2022 |
| Ammwater Ltd | Colchester | 2007 |
| Amoli Property Solutions Ltd | Leicester | 2021 |
| Amor Property Management Ltd | Birmingham | 2019 |
| Amora Management Company Limited | London | 1999 |
| Amore Real Estate Ltd | Leeds | 2024 |
| Amory Property Limited | London | 2026 |
| Amos Barber (Properties) Limited | Peterborough | 2014 |
| Amos PM Limited | Cardiff | 2022 |
| Amos Villas Management Company Limited | Redhill | 2019 |
| Amped UP Group Ltd | Thames Ditton | 2019 |
| Ampfield (Management Company) Limited | Hoddesdon | 2004 |
| Ampfield Meadows Management Limited | Nottingham | 2023 |
| Amphibos Limited | Buxton | 2021 |
| Amphion Mews 2 Limited | West Bromwich | 2020 |
| Ampleforth House Management Company (Warrington) Limited | Stockport | 2004 |
| Amplegallop Property Management Limited | London | 1987 |
| Ampletop Limited | Nuneaton | 1986 |
| Ampm Block Management Limited | Harrogate | 2022 |
| Ampney Properties Limited | Colchester | 1994 |
| Amport Park Mews Limited | Southampton | 1984 |
| Amport Road Residents Association Limited | Croydon | 2011 |
| Ampthill Chase Management Company Limited | New Milton | 2016 |
| Ampthill House RTM Company Limited | Totland Bay | 2018 |
| Ampthill Road Management Company Limited | London | 2010 |
| AMR Living Ltd | London | 2023 |
| Amrit Property Services Ltd | London | 2021 |
| Amro Property Services Ltd | Hull | 2025 |
| Amron Homes & Relocation Services Ltd | London | 2023 |
| AMS Property Services (Kent) Ltd | Chatham | 2020 |
| AMS UNI Ltd | London | 2024 |
| Amsp Land Ltd | London | 2018 |
| Amsterdam Way Apartments Ltd | Gravesend | 2021 |
| Amtagore Ltd | London | 2020 |
| Amto Properties Limited | Maldon | 2017 |
| Amulet Properties Limited | Aston Sandford | 1999 |
| Amwell Court Management Limited | Braintree | 1983 |
| Amwell House Ltd | Bromley | 2024 |
| Amwell Road Freehold Limited | Cambridge | 2019 |
| AMY Gardens Management Limited | Southampton | 2004 |
| AMY Johnson MAN Co 2 Limited | Nottingham | 2014 |
| AMY Rentals and Property Ltd | Peterborough | 2025 |
| AMY Sarah Daniel Properties Ltd | Warrington | 2026 |
| Amy&H Property Managment Ltd | Northolt | 2026 |
| Amyand Lodge Limited | Bournemouth | 1956 |
| Amyand Park Freehold Ltd. | Twickenham | 2023 |
| Amyand Park Residents Association Limited | Twickenham | 1976 |
| Amyand Park Road Residents Limited | Twickenham | 1996 |
| Amzs Estate Ltd | London | 2024 |
| AN Prop Limited | Caterham | 2023 |
| ANA Asset Management Ltd | Blackburn | 2023 |
| ANA Clean Limited | Newcastle Upon Tyne | 2013 |
| Anabelle Court, Slade Hill Management Limited | London | 2011 |
| Anacapri Management Company Limited | Kingswinford | 2019 |
| Anagada Park Freehold Company Limited | London | 2000 |
| Analon Limited | Catford | 1990 |
| Anand Real Eastate Limited | Isleworth | 2022 |
| Ananrace Limited | | 2000 |
| Anantha Properties Ltd | London | 2023 |
| Ananya & Nayana Limited | Nottingham | 2021 |
| Anas&Areen Co Limited | Rochdale | 2026 |
| Anastasia Court Freehold Limited | Ealing | 2003 |
| Anatole Management Limited | Croydon | 1970 |
| Anavrin Property Management Company Limited | Clevedon | 2017 |
| Anaya AM Property Ltd | Manchester | 2025 |
| Ancarva Management Limited | Penzance | 2020 |
| Ancaster Avenue (Chapel ST Leonards) Residents` Company Limited | Skegness | 2007 |
| Ancaster Lodge Residents Association Limited | Ascot | 1980 |
| Ancestry Residents Management Ltd | Stone | 2025 |
| Anchor Waterside Management Company Limited | Essex | 2004 |
| Anchor Bay Management Limited | Swansea | 1993 |
| Anchor Brewhouse Management Company Limited(The) | London | 1984 |
| Anchor Court (Cookham) Residents Limited | Marlow | 2003 |
| Anchor Court Management (Ipswich) Limited | Colchester | 2008 |
| Anchor Court Management Company (Swansea) Limited | Swansea | 1984 |
| Anchor Court Management Company Limited | Shropshire | 2001 |
| Anchor Crown Ltd | Swansea | 2024 |
| Anchor Field Management Ltd | Croydon | 2020 |
| Anchor Home Services Ltd | London | 2026 |
| Anchor House Residents Limited | Norwich | 2002 |
| Anchor Living Limited | Coventry | 2025 |
| Anchor Mews Management Company Limited | London | 1983 |
| Anchor Point (Block a) RTM Company Limited | Essex | 2023 |
| Anchor Point Management Limited | Driffield | 2002 |
| Anchor Property Management SW Limited | Ivybridge | 2025 |
| Anchor Quay Management Company Limited | Hoddesdon | 2006 |
| Anchor Reach Management Company Limited | Gravesend | 1996 |
| Anchor Road Management Company Limited | Bristol | 2024 |
| Anchor Terrace Freehold Limited | Hertford | 2017 |
| Anchor Villages Management Services Ltd | Melton Ross | 2022 |
| Anchor Warehouse Management Company Limited | Penryn | 2002 |
| Anchor Watch Management Company Limited | Belfast | 2005 |