| 40 - 42 Sydenham Avenue RTM Company Limited | Frome | 2025 |
| 40 Adelaide Avenue Freehold Limited | Brockley | 2009 |
| 40 Alexandra Park Road (Wood Green) Limited | London | 2003 |
| 40 Alexandra Road Management Limited | Newport | 2003 |
| 40 Alma Vale Road Management Limited | Bristol | 1984 |
| 40 Ambleside Management Company Limited | London | 2018 |
| 40 and 40A Stondon Park (Forest Hill) Management Company Limited | London | 2018 |
| 40 and 42 Market Place (Freehold) Company Limited | London | 2007 |
| 40 Anerley Park Management Limited | London | 1994 |
| 40 Apsley Road (Bristol) Limited | Bristol | 1963 |
| 40 Aristotle Road Freehold Company Limited | Nottingham | 2012 |
| 40 Arley Hill Management Company Limited | | 1996 |
| 40 Balmoral Road Management Company Limited | Avon | 1989 |
| 40 Bath Road (Freehold) Limited | London | 2007 |
| 40 Belsize Park (Management) Limited | | 1988 |
| 40 Belsize Square Residents Association Limited | | 1978 |
| 40 Bloomfield Park RTM Company Limited | Bath | 2024 |
| 40 Bramham Gardens Limited | London | 2000 |
| 40 Brownhill Road Catford Management Company Limited | London | 2014 |
| 40 Brunswick Square Limited | Hove | 2010 |
| 40 Buchanan Gardens (Freehold) Limited | Sheffield | 2016 |
| 40 Buckingham Place (Brighton) Limited | Brighton | 2014 |
| 40 Buckmaster Freehold Limited | London | 2022 |
| 40 Burlington Gardens Limited | | 2005 |
| 40 Cadogan Square (Management) Limited | London | 1978 |
| 40 Cambridge Road South Management Company Limited | London | 1992 |
| 40 Canewdon Road Residents Limited | London | 2020 |
| 40 Canewdon Road RTM Company Limited | London | 2009 |
| 40 Canning Road Limited | London | 2010 |
| 40 Carey Street Ltd | Reading | 2023 |
| 40 Carnarvon Road Management Company Limited | Bristol | 1985 |
| 40 Castle Hill Maintenance Limited | Folkestone | 2011 |
| 40 Clapham Road Management Limited | Braintree | 1995 |
| 40 Clarendon Square Limited | Leamington Spa | 1993 |
| 40 Clermont Terrace Brighton (Management) Limited | Brighton | 1995 |
| 40 Clifton Gardens Limited | London | 2017 |
| 40 Cloudesley Road RTM Company Ltd | London | 2016 |
| 40 Compayne Gardens Limited | London | 1994 |
| 40 Corfton Road Limited | London | 2019 |
| 40 Crabton Close Road Freehold Limited | Bournemouth | 2024 |
| 40 Crockerton Road Limited | London | 2002 |
| 40 Davisville Road Freehold Limited | London | 2019 |
| 40 Delaford Street RTM Limited | London | 2007 |
| 40 Denbigh Street RTM Company Limited | | 2007 |
| 40 Downleaze Management Co. Limited | Bristol | 1984 |
| 40 Dulwich Road RTM Company Limited | London | 2019 |
| 40 Durnford Street (Plymouth) RTM Company Limited | Plymouth | 2026 |
| 40 Durnford Street Management Limited | Plymouth | 2013 |
| 40 Earlswood Road Ltd | Redhill | 2019 |
| 40 Eastcote Road Property Company Limited | Harrow | 2005 |
| 40 Eastlake Road (London) Limited | London | 2014 |
| 40 Effingham Road Limited | Surbiton | 2016 |
| 40 Ellington Street Limited | | 1978 |
| 40 Elspeth Road (Management Company) Limited | London | 1992 |
| 40 Ennismore Gardens Limited | London | 1974 |
| 40 Evesham Road Management Company Limited | Cheltenham | 1992 |
| 40 Falkner Square Management Company Limited | Croydon | 2005 |
| 40 Fellows Road Management Limited | | 2001 |
| 40 Fentiman Road Limited | London | 2017 |
| 40 Fernbank Road Management Limited | Bristol | 1984 |
| 40 Finborough Road Management Limited | York | 1997 |
| 40 Gervis Road Freehold Limited | New Milton | 2026 |
| 40 Gipsy Hill Freehold Limited | London | 2013 |
| 40 Gloucester Road RTM Company Limited | Bath | 2023 |
| 40 Godolphin Road Limited | Woodford Green | 2007 |
| 40 Gordon Road RTM Company Limited | Leicester | 2017 |
| 40 Granada Road Management Co Limited | Portsmouth | 2002 |
| 40 Greenhill RTM Company Ltd | Evesham | 2022 |
| 40 Greenwood Road Limited | London | 2024 |
| 40 Greyhound Road Limited | London | 2018 |
| 40 Gunter Grove Limited | Ottery St. Mary | 2021 |
| 40 Haddington Road Management Limited | Plymouth | 1988 |
| 40 Hamilton Estates Limited | Oldham | 2019 |
| 40 Hampton Road (Redland) Management Co Limited | Bristol | 1991 |
| 40 Handforth Road Ltd. | | 1998 |
| 40 Havelock Road Management Company Limited | Croydon | 2000 |
| 40 High Street Kimpton Limited | Wheathampstead | 1998 |
| 40 Highbury Grove Limited | | 2001 |
| 40 Highbury Place Limited | London | 1999 |
| 40 Homefield Road Management Company Limited | Wokingham | 2017 |
| 40 Hornton Street RTM Company Limited | London | 2016 |
| 40 Horsforth Avenue (Bridlington) Management Company Ltd | Bridlington | 2019 |
| 40 Houndiscombe Road Management Company Limited | Yelverton | 2001 |
| 40 Hyde Park Gate Management Limited | London | 1978 |
| 40 Kenilworth Road RTM Company Limited | St. Leonards-On-Sea | 2008 |
| 40 Kensington Place (Brighton) Limited | Brighton | 2023 |
| 40 King Street RTM Company Limited | Beaconsfield | 2011 |
| 40 Lansdowne Place Ltd. | Hove | 1992 |
| 40 Lawrie Park Gardens (Sydenham) Flat Maintenance Limited | London | 1970 |
| 40 Loftus Road Management Limited | London | 2022 |
| 40 Loftus Road RTM Company Limited | London | 2012 |
| 40 London Road Bexhill Ltd | Bexhill-On-Sea | 2024 |
| 40 Longley Road Residents' Association Limited | | 1977 |
| 40 Luckwell Road Management Company Ltd | Dorchester | 2022 |
| 40 Lyford Road (Freehold) Limited | London | 2024 |
| 40 Magdala Road Management Limited | Nottingham | 1994 |
| 40 Magdalen Road Management Company Limited | Devon | 2006 |
| 40 Manor Avenue Freehold Limited | London | 2017 |
| 40 Mapesbury Road Limited | London | 2021 |
| 40 Marina Limited | St. Leonards-On-Sea | 2022 |