| Adam Properties North West Ltd | Bolton | 2023 |
| Adam Property Services Ltd | Wembley | 2018 |
| Adam Wells & Co Ltd | Luton | 2021 |
| Adam&Eve Estate Limited | Barking | 2025 |
| Adams & Co 2019 Ltd | Stanmore | 2020 |
| Adams Maltings (Management) Limited | Halstead | 2006 |
| Adams Place Management Company (NO.3) Limited | Bedford | 2003 |
| Adams Property Management Limited | Stoke On Trent | 2012 |
| Adams Way Skipton Limited | Keighley | 2025 |
| Adams Wharf Management Company Limited | Tonbridge | 2019 |
| Adams&Adams Holdings Ltd | Hayling Island | 2025 |
| Adams-Edwards Property Solutions Limited | Sale | 2021 |
| Adamson Road 15 RTM Limited | London | 2008 |
| Adamson’S Property Limited | Bedford | 2024 |
| Adamsrill Close (Management) Limited | Barnet | 1968 |
| Adamsrill Road Freehold Company Limited | London | 2020 |
| Adan Services Ltd | London | 2023 |
| Adapt to Official Ltd | Ormskirk | 2021 |
| Adara Maison Limited | Potters Bar | 2025 |
| Adare Close Management Company Limited | Great Dunmow | 2019 |
| Adastra General Limited | Coventry | 2020 |
| Adastra House RTM Company Limited | London | 2026 |
| Adastra Property Management Ltd | Darwen | 2024 |
| Adastral Management Company Limited | London | 1983 |
| Adastral Village South Residents Limited | London | 2003 |
| Adbis Ltd | Glasgow | 2026 |
| Adcroft Mews Management Company Ltd | Trowbridge | 2017 |
| ADD Grove Freehold Ltd | London | 2022 |
| Addanki Builders Ltd | Manchester | 2025 |
| Adderbury Fields Management Company Limited | Birmingham | 2015 |
| Adderley Hall Management Company Limited | Market Drayton | 2016 |
| Adderstone Park Management Company Limited | Whitley Bay | 1971 |
| Adderstone Steading Management Company Limited | Newcastle Upon Tyne | 2023 |
| Addgrange Limited | Southampton | 1985 |
| Addilyn Estates Ltd | Dagenham | 2021 |
| Addington Close Management Limited | Milton Keynes | 2024 |
| Addington Court (Weston-Super-Mare) Limited | Weston-Super-Mare | 1967 |
| Addington House Residents Association Ltd | Reading | 1987 |
| Addington Management Limited | Gerrards Cross | 2009 |
| Addington Place Management Company Limited | Bourne End | 2014 |
| Addington Road (Selsdon) Property Management Ltd. | Bromley | 2015 |
| Addinsell (II) Management Limited | Bourne End | 2008 |
| Addinsell Management Limited | Bourne End | 2008 |
| Addiscombe DSP Ltd | Leeds | 2004 |
| Addiscombe Flat Management (Bournemouth) Limited | Dorset | 2001 |
| Addiscombe Grove Management Limited | London | 2018 |
| Addisland Court Company Limited | London | 1995 |
| Addison Court Chesham Company Limited | Aylesbury | 2015 |
| Addison Court Freehold Limited | London | 1996 |
| Addison Court Management Company Limited | London Colney | 1989 |
| Addison Facility Management Limited | Southampton | 2011 |
| Addison Freehold Ltd | Finchley | 2022 |
| Addison Gardens Property Management Limited | London | 1994 |
| Addison Grange RTM Company Limited | Greater Manchester | 2021 |
| Addison House Residents Management Company Limited | Salisbury | 2005 |
| Addison LET Ltd | Redcar | 2025 |
| Addison Residents Company Limited | London | 1974 |
| Addison Road Management Limited | Northampton | 2021 |
| Addlestone Courtyard Residents Management Limited | Sunbury-On-Thames | 1995 |
| Addlestone House and Langton Close Residents Association Limited | Staines-Upon-Thames | 1994 |
| Addlestone House Management Company Limited | Harlow | 2017 |
| Addmargin Limited | Harrow | 1988 |
| Address Homes Ltd | Southport | 2017 |
| Adeasy Property Solutions Ltd | Ilford | 2021 |
| Adebossar Global Resources Limited | Grays | 2023 |
| Adefol Limited | Southampton | 2022 |
| Adegate Limited | | 1992 |
| Adel Management Company Limited | Leeds | 1985 |
| Adel Mill Management Limited | Leeds | 1993 |
| Adel MMT Limited | Edgware | 2025 |
| Adel Square Ltd | Middlesbrough | 2024 |
| Adelaide (Slough) Management Company Limited | Bourne End | 1984 |
| Adelaide Bacton Road Ltd | Felixstowe | 2016 |
| Adelaide Chase Management Company Limited | Gilford | 2002 |
| Adelaide Court (2014) Management Company Limited | Liverpool | 2014 |
| Adelaide Court (Blackpool) Management Company Limited | Blackpool | 1975 |
| Adelaide Court (Weymouth) Limited | Weymouth | 1987 |
| Adelaide Court Management Limited | Orpington | 1970 |
| Adelaide Court RTM Company Ltd | London | 2016 |
| Adelaide Crescent Management Company Limited | North Chingford | 1993 |
| Adelaide Flats Ltd | Surbiton | 2020 |
| Adelaide Gardens (Residents) Management Company Limited | Hertfordshire | 2026 |
| Adelaide House (Portishead) Management Limited | Brixham | 1978 |
| Adelaide House Freehold Limited | Epsom | 2019 |
| Adelaide House Limited | Malvern | 1996 |
| Adelaide House Malvern Ltd | Worcester | 2024 |
| Adelaide House Residents' Association Limited | Bedford | 1987 |
| Adelaide Mews Management Company (1996) Limited | Thirsk | 1996 |
| Adelaide Owners Limited | Lymington | 2009 |
| Adelaide Properties Limited | Harrow | 2011 |
| Adelaide Seven Limited | | 1997 |
| Adelaide Terrace NO 18 Limited | Brentford | 2014 |
| Adelaja & Partners Family Inc Ltd | Swindon | 2025 |
| Adele Avenue Residents Association Limited | Stevenage | 1987 |
| Adelina Yard Freehold Limited | London | 2010 |
| Adelphi 19 Limited | Aberdeen | 2012 |
| Adelphi Court (Hackney) Freehold Limited | London | 2022 |
| Adelphi Court Owners Limited | London | 2009 |
| Adelphi Court Residents' Association (Chiswick) Limited | London | 1995 |
| Adelphi Management Company (Paignton) (Number 2) Limited | Devon | 1999 |