| Alexandra Terrace Residents Management Company Ltd | Enniskillen | 2015 |
| Alexandra Three RTM Company Limited | London | 2024 |
| Alexandra Villa Management Company Limited | Birkenhead | 2004 |
| Alexandra Villas (Brighton) Limited | Brighton | 2008 |
| Alexandra Wharf (Grimsby) Residents Company Limited | Grimsby | 2005 |
| Alexandra Wharf Docks Management Company Limited | Hoddesdon | 2026 |
| Alexandra Wharf RTM Company Ltd | Romsey | 2023 |
| Alexandre Boyes (Maintenance) Ltd | Tunbridge Wells | 2015 |
| Alexandre Boyes (Management) Ltd | Tunbridge Wells | 2015 |
| Alexandre Boyes Ltd | Tunbridge Wells | 2015 |
| Alexandria Lodge Limited | Lytham St. Annes | 1974 |
| Alexandria Road (West Ealing) Management Company Limited | London | 2005 |
| Alexrep Limited | Plymouth | 1985 |
| Alexrun Limited | London | 1995 |
| Aleys Yard Management Company Limited | Braintree | 2019 |
| Aleyvale Limited | Newhaven | 1989 |
| Alfa - Ital Ltd | Feltham | 2020 |
| Alfa Home-F Ltd | Preston | 2025 |
| Alfadhli Property Management Ltd | Edgware | 2026 |
| Alfaiaz Properties Group Ltd | London | 2018 |
| Alfarsi Limited | Birmingham | 2023 |
| Alferra Ltd | Salford | 2025 |
| Alfold (Loxwood Road) Management Company Limited | Camberley | 2022 |
| Alfold Gardens Management Company Limited | Wimbledon | 2024 |
| Alford Barns Management Ltd | Castle Cary | 2008 |
| Alford Court Management Company Limited | Tewkesbury | 1990 |
| Alfred Bannister Mews (Management) Company Limited | Grimsby | 2009 |
| Alfred Close Management Company Limited | Southampton | 1993 |
| Alfred Court (Management) Wells Limited | Harlow | 2011 |
| Alfred Court Freehold (Hendon) Limited | London | 2021 |
| Alfred Court Property Management Limited | Bristol | 1988 |
| Alfred House (Darwin Court) Residents Management Company Limited | Norwich | 2016 |
| Alfred Management Company Limited | Belfast | 1999 |
| Alfred Mews Management Company Limited | Beckenham | 1989 |
| Alfred Place Property Management Limited | South Molton | 2025 |
| Alfred Property Management Limited | Waltham Cross | 2021 |
| Alfred Street Apartment Management Limited | Belfast | 2001 |
| Alfred Terrace Mews (Management) Limited | Grimsby | 2012 |
| Alfred's Court Management Company Ltd | Farnborough | 2017 |
| Alfred's Drive Management Company Limited | Melksham | 2022 |
| Alfred's Gate (Newton Poppleford) Management Company Limited | New Milton | 2018 |
| Alfred's Place Management Limited | Salisbury | 2017 |
| Alfreda Court (Whitchurch) Maintenance Limited | Cardiff | 1961 |
| Alfreds Fields Management Company Limited | Southampton | 1997 |
| Alfreton Close Residents Society Limited | London | 1972 |
| Alfreton Properties JJ Holdings Ltd | Alfreton | 2023 |
| Alfreton Road Property Management Services Limited | Nottingham | 2005 |
| Alfrick Property Management Ltd | Alfrick | 2023 |
| Alfriston Court Management (1987) Limited | Newhaven | 1987 |
| ALG Management Services Ltd | London | 2024 |
| Algar Road Management Limited | Isleworth | 2022 |
| Algernon House Management Limited | Newport | 2004 |
| Algernon Properties Limited | London | 2002 |
| Alhambra Living Limited | Bournemouth | 2023 |
| Alhenjon Investments Limited | Tamworth | 1996 |
| Alhoot Limited | Manchester | 2025 |
| ALI Heritage Ltd | Thornliebank | 2024 |
| Alia Way (North Lopham) Management Company Limited | Ipswich | 2023 |
| Aliaura Management Company Limited | Bognor Regis | 2017 |
| Alice Court (Bilston) Management Limited | Shrewsbury | 2006 |
| Alice Court (Millbrook) Management Limited | Southampton | 2018 |
| Alice Court Freehold Limited | London | 2010 |
| Alice Court Management Limited | London | 1980 |
| Alice Gate Management Company Limited | Croydon | 2008 |
| Alice House Management Company (Staines) Limited | Sunbury-On-Thames | 2002 |
| Alice House Management Company Limited | London | 1987 |
| Alice Meadow Ltd | Truro | 2024 |
| Aligned Estates Ltd | Cardiff | 2025 |
| Aligned Property Management Ltd | Liverpool | 2025 |
| Alignment RTM Company Limited | London | 2026 |
| Alindon Limited | London | 1992 |
| Alington Freehold Limited | Bournemouth | 2006 |
| Alington House Residents Limited | Bournemouth | 1998 |
| Alinthorn Limited | Windsor | 1985 |
| Alisa Lodge Freehold Limited | Bournemouth | 2017 |
| Alisha Zarar Ltd | Edinburgh | 2024 |
| Alishan Properties Family Limited | Harrow | 2025 |
| Alison Court Management Company Limited | Hemel Hempstead | 1991 |
| Alison Neary Properties Ltd | Great Yarmouth | 2026 |
| Alison Park Management Company Limited | Ashbourne | 2024 |
| Alisons Lane (Aston Tirrold) Management Company Limited | Witney | 2021 |
| Alistair Properties Ltd | Peterborough | 2019 |
| Alix Holdings Limited | Cheam | 2021 |
| Alixandra Court Management Limited | Sale | 1986 |
| Aliyon Property Group Ltd | Birmingham | 2024 |
| Alkahf Times Ltd | Birmingham | 2024 |
| Alken House Management Limited | Wallington | 1980 |
| Alkerden Gateway (Ebbsfleet) Residents Management Company Limited | Kingston Upon Thames | 2024 |
| Alkhaddar Properties Ltd | Altrincham | 2017 |
| Alkham Road RTM Company Limited | New Milton | 2025 |
| Alkincoats View Management Company Limited | Colne | 2020 |
| ALL Angels Close Management Company Limited | Aylesford | 2012 |
| ALL Counties Planned Maintenance Ltd | Bristol | 2019 |
| ALL Cover Maintenance Ltd | London | 2025 |
| ALL Hallows RTM Company Limited | London | 2011 |
| ALL Hours Property Services Limited | Pulborough | 2025 |
| ALL in Properties Limited | Sheffield | 2022 |
| ALL Land 2014 RTM Company Limited | London | 2014 |
| ALL Nation Properties Ltd | England | 2026 |
| ALL New Newcourt Management Ltd | Exeter | 2013 |