| Alpha 11 11 Ltd | Newcastle | 2025 |
| Alpha Court Management (Lincoln) Ltd | Newark-Upon-Trent | 2014 |
| Alpha Court Management Company Limited | Belfast | 2000 |
| Alpha Court Residents Management Limited | London | 2016 |
| Alpha Court RTM Company Limited | Leighton Buzzard | 2024 |
| Alpha House (Reading) Limited | Reading | 1960 |
| Alpha House Annandale Limited | Bognor Regis | 2020 |
| Alpha House Freehold Management Company Ltd | Croydon | 2021 |
| Alpha House RTM Company Limited | Salisbury | 2026 |
| Alpha Living Ltd | London | 2025 |
| Alpha Property NE Ltd | Redcar | 2023 |
| Alpha Seven Group Holdings Limited | Bristol | 2026 |
| Alpha Teams Commercial Ltd | London | 2020 |
| Alphabarr Limited | Kidderminster | 1991 |
| Alphabet Residents Management Company Limited | London | 2021 |
| Alphabet Square Management Company Limited | Bromley | 1988 |
| Alphachase Limited | Milton Keynes | 1987 |
| Alpham RTM Company Ltd | London | 2025 |
| Alphamet Holdings Ltd | Oldham | 2016 |
| Alphaquake Limited | London | 1987 |
| Alphea Management Company Limited | London | 1986 |
| Alphen House Portsmouth Management Limited | Southsea | 1987 |
| Alphin Brook Management Company Limited | Shrewsbury | 2002 |
| Alpine Court (Kenilworth) Limited | Kenilworth | 1963 |
| Alpine Court (Stroud) Limited | Gloucester | 2006 |
| Alpine Court (Withington) Management Company Limited | Croydon | 1992 |
| Alpine Court 2000 Limited | Ascot | 2000 |
| Alpine Court Freehold Limited | Dorking | 1997 |
| Alpine Court Management Company Limited | London | 1982 |
| Alpine Flourish Property Limited | Nottingham | 2021 |
| Alpine Grove Limited | Gravesend | 2000 |
| Alpine House (Stanmore) Management Limited | Borehamwood | 2017 |
| Alpine House Management Company Limited | St. Leonards-On-Sea | 2004 |
| Alpine House RTM Company Limited | Borehamwood | 2019 |
| Alpine Lodge Limited | Lytham St. Annes | 1988 |
| Alpine Management Limited | Cheadle | 2021 |
| Alpine Mews Management Company Limited | Paignton | 2004 |
| Alpine Property Associates Ltd | Brighton | 2023 |
| Alpine View Management Company Limited | Uckfield | 1992 |
| Alpine Villa Management Company Limited | Torquay | 1988 |
| Alpinecross Limited | London | 2010 |
| Alpinehill Property Management 2 Limited | Morecambe | 2024 |
| Alpo Property Ltd | Liverpool | 2025 |
| Alpraham Hall Barns Management Company Limited | Tarporley | 2009 |
| Alpstein Investment Limited | London | 2025 |
| Alradaq Ltd | London | 2024 |
| Alresford Down Management Company Limited | Tarporley | 2025 |
| Alrizq Property Limited | Orpington | 2023 |
| Alrose Villa Associates Limited | Swanage | 2022 |
| Alroy Court Management Company Limited | London | 2021 |
| Alroy Liverpool RTM Company Ltd | Liverpool | 2022 |
| Alsancak Lettings Ltd | Beckenham | 2026 |
| Alscourt Residents Association Limited | Cheltenham | 1981 |
| Alston Chambers Limited | North Walsham | 2023 |
| Alston Chambers Property Management Limited | North Walsham | 2021 |
| Alston Court (Langtoft) Management Limited | Peterborough | 2004 |
| Alston Gardens Residents Limited | Woking | 1994 |
| Alston Grange Preston Road Management Company Limited | Tarporley | 2019 |
| Alston Lodge Residents Association Limited | Cheltenham | 2001 |
| Alston Manor Barns Limited | Plymouth | 2006 |
| Alston Rise Management Company Limited | Warmley | 2023 |
| Alston Road Management Company Limited | London | 2017 |
| Alstone Mews (Management) Company Limited | Cheltenham | 2002 |
| ALT14 Limited | London | 2024 |
| ALT22 Limited | London | 2024 |
| ALT23 Limited | London | 2024 |
| Alta Hill Properties Limited | Croydon | 2024 |
| Alta Property Group Ltd | Leicester | 2020 |
| Alta Vista Management Company Limited | Teignmouth | 2019 |
| Altair Court RTM Company Limited | Rickmansworth | 2024 |
| Altair Management Limited | Southampton | 2023 |
| Altamar Management (Swansea) Limited | Swansea | 2005 |
| Altamira Estate Limited | Exmouth | 2003 |
| Altamont (Warlingham) Freeholders Ltd | Farnborough | 2008 |
| Altavia House RTM Company Limited | Harlow | 2026 |
| Altdam Farm Management Company Limited | New Milton | 1984 |
| Altenbrook Management Company Limited | Altrincham | 1999 |
| Alternative Property Solutions Ltd | Ellesmere Port | 2020 |
| Alternative Services (Properties) Ltd | Ipswich | 2023 |
| Altglen Management Company Limited | Altrincham | 1980 |
| Althea Property Investments Limited | London | 2017 |
| Althorpe Grove (NO.3) Management Limited | London | 1981 |
| Althorpe Grove Freehold Limited | London | 2001 |
| Altido Ltd | London | 2019 |
| Altin Court Management Limited | Altrincham | 2015 |
| Altin Properties Ltd | Durham | 2019 |
| Altitude (Poole) Management Company Limited | Bournemouth | 2013 |
| Altitude Property Management Company Limited | Birmingham | 2006 |
| Altius One (Hackney) Management Company Limited | Seaton | 2005 |
| Altmore One Management Limited | Coleraine | 2016 |
| Altofts Acres (Wakefield) Management Company Limited | Chesterfield | 2025 |
| Alton Court Management Company Limited | Bournemouth | 2002 |
| Alton Gardens Residents Association Limited | Croydon | 1965 |
| Alton House Management Company Limited | Sheffield | 2008 |
| Alton Lodge Management Co. Limited | Bournemouth | 1969 |
| Alton Reach (Stutton) Management Company Limited | Ipswich | 2021 |
| Alton Road (Wallasey) Management Co. Limited | Wirral | 1987 |
| Alton Street (Carlisle) Limited | Carlisle | 2010 |
| Altona (Clapham) Residents Management Company Limited | Bishop'S Stortford | 2004 |
| Altona Management Company Limited | Belfast | 2001 |