| 40 Blenheim Crescent Management Limited | | 1986 |
| 40 Bolton Gardens & 6A Wetherby Mews (Freehold) Limited | Abingdon | 2010 |
| 40 Bouverie Road West (Folkestone) Ltd. | Folkestone | 2000 |
| 40 BOW Common Lane (London) RTM Company Limited | Bromley | 2020 |
| 40 Bramber Road Limited | London | 2016 |
| 40 Brondesbury Villas Managing Company Limited | London | 2017 |
| 40 Broomsleigh Street Limited | Hitchin | 2007 |
| 40 Buckingham Gate Limited | Chelmsford | 2014 |
| 40 Caddaw Avenue Ltd | Hemel Hempstead | 2019 |
| 40 Cadogan Place Limited | Morden | 2003 |
| 40 Caversham Ltd | London | 2025 |
| 40 Chancellors Road Ltd | London | 2006 |
| 40 Chastilian Freehold Ltd | Swanley | 2025 |
| 40 Chastilian Road Management Company Ltd | Kent | 2025 |
| 40 Chester Square Freehold Company Limited | London | 2018 |
| 40 Church Road Limited | Richmond | 1992 |
| 40 Church Street Management Company Limited | Hampshire | 1998 |
| 40 Ciao Ciao Ltd | Sutton | 2025 |
| 40 Claremont Road Management Company Limited | Coleford | 2007 |
| 40 Clerkenwell Ltd | London | 2025 |
| 40 Clyde Road Limited | Bury St. Edmunds | 2015 |
| 40 Craster Road Management Ltd | London | 2020 |
| 40 Crewdson Road Limited | London | 1987 |
| 40 Digby Crescent Limited | London | 2012 |
| 40 Durham Road Limited | London | 2003 |
| 40 Earlham Street Limited | | 1979 |
| 40 Earlham Street Property Limited | London | 2004 |
| 40 Ennismore Freehold Limited | London | 1983 |
| 40 Fairmile Avenue RTM Company Ltd | Sutton | 2015 |
| 40 Ferndale Road Freehold Limited | London | 2026 |
| 40 Finborough Road Freeholders Limited | York | 2013 |
| 40 Finsbury Park Road Management Ltd. | | 1996 |
| 40 George Ltd | London | 2025 |
| 40 GL Limited | London | 2024 |
| 40 Gloucester Road Kensington Limited | London | 2023 |
| 40 Golders Way Limited | London | 2024 |
| 40 Great North Road Management Limited | London | 2026 |
| 40 Green Street Limited | London | 1998 |
| 40 Grosvenor Residents Property Management Limited | London | 2017 |
| 40 Hackney Road Freehold Limited | London | 2020 |
| 40 Halden Road Limited | Exeter | 2008 |
| 40 Hamilton Terrace Limited | | 2002 |
| 40 Hermon Hill RTM Company Limited | London | 2008 |
| 40 High Street Eton Limited | London | 2011 |
| 40 Hillaries Road Limited | Birmingham | 2017 |
| 40 Hillside Limited | Ruislip | 2016 |
| 40 Holland Road Limited | London | 2018 |
| 40 Home Park Road Limited | London | 2007 |
| 40 Hyde Park Gate Freehold Limited | London | 1998 |
| 40 Jacobs Wells Road Management Company Ltd | Bristol | 2021 |
| 40 James ST OX4 Ltd | Poole | 2004 |
| 40 John Street Ltd | Penicuik | 2020 |
| 40 Kennington Lane Management Company Limited | London | 2014 |
| 40 Keston Road Limited | London | 2017 |
| 40 Lambrook Terrace Limited | London | 2020 |
| 40 Lavender Hill Limited | Croydon | 2016 |
| 40 Lavender Sweep RTM Company Limited | London | 2025 |
| 40 Lennox Gardens Limited | London | 1996 |
| 40 Limes Grove Limited | | 1990 |
| 40 Marine Parade (Brighton) Limited | Brighton | 2005 |
| 40 Mincing Lane Limited | Birmingham | 2026 |
| 40 Morse Road Redfield Bristol Management Company Limited | Bristol | 2004 |
| 40 Mottingham Road (Freehold) Limited | Blackpool | 2020 |
| 40 Mount Ephraim Road Limited | Bromley | 2019 |
| 40 New Exeter Street Ltd | Newton Abbot | 2021 |
| 40 Norbroke Street Limited | London | 2020 |
| 40 North Lane Limited | Canterbury | 2018 |
| 40 Norton Road Property Management Ltd | Hove | 2013 |
| 40 Olive Lane Management Company Limited | Liverpool | 2007 |
| 40 Pember Road Limited | London | 2012 |
| 40 Pendennis Road Limited | | 2006 |
| 40 PGT Limited | London | 2018 |
| 40 Pont Street Freehold Limited | London | 2010 |
| 40 Portland Road Ltd | Harrow | 2020 |
| 40 Priory Road (Freehold) Limited | London | 2010 |
| 40 Redcliffe Gardens Limited | Watford | 2008 |
| 40 Redcliffe Square (Management Company) Limited | Woking | 1987 |
| 40 Sellons Freehold Management Ltd | London | 2021 |
| 40 Shorrolds Road Limited | London | 2010 |
| 40 Smith Square Limited | Hertford | 2004 |
| 40 South Road (Newhaven) Limited | Brighton | 2005 |
| 40 SR Ltd | London | 2024 |
| 40 ST. James Road Management Ltd | East Grinstead | 2016 |
| 40 Stallard Street (Trowbridge) Limited | Trowbridge | 2008 |
| 40 Station Road Ltd | Cardiff | 2014 |
| 40 Steps Property Services Limited | Leamington Spa | 2017 |
| 40 Tetherdown Management Company Ltd | Oakham | 2013 |
| 40 Thirlestane Road Limited | Edinburgh | 2023 |
| 40 Tredegar Square Limited | London | 2016 |
| 40 Warneford Street Limited | | 2005 |
| 40 Windsor Road Residents Association Limited | London | 1987 |
| 40 Wingford Road Management Limited | London | 2005 |
| 40 Winks Limited | London | 2024 |
| 40 Winks Properties Limited | Walton-On-Thames | 2025 |
| 40-42 Brookwood Road Share SAL E Company Ltd | London | 2025 |
| 40-42 West Way (Freehold) Limited | Rickmansworth | 2024 |
| 40-44 Crookham Road Residents Association Limited | London | 1997 |
| 40-44 Holdenhurst Road Limited | London | 2021 |
| 40-46 Commercial Street Hereford Limited | London | 2022 |
| 40-46 Sextant Avenue Tower Hamlets Limited | | 2006 |