| 30 Creffield Road (Management) Limited | London | 2001 |
| 30 Cromwell Grove RTM Company Limited | London | 2023 |
| 30 Cromwell Road (Hove) Freehold Limited | Brighton | 2019 |
| 30 Crookham Road Ltd | London | 2020 |
| 30 Crooms Hill Management Company Limited | London | 1995 |
| 30 Crouch Hall Road Limited | | 1996 |
| 30 Daniel Street (Bath) Management Company Limited | Croydon | 1985 |
| 30 Downleaze Limited | Bristol | 2023 |
| 30 Duncan Terrace Limited | London | 1983 |
| 30 Eccleston Road Management Limited | London | 2024 |
| 30 Edbrooke Road Limited | London | 2006 |
| 30 Egerton Gardens Limited | | 1996 |
| 30 Elder Avenue Ltd | London | 2007 |
| 30 Elmbourne Road (Freehold) Limited | London | 2000 |
| 30 Elsham Road London W14 Limited | | 1997 |
| 30 Elthorne Avenue Ltd | London | 2020 |
| 30 Ennismore Gardens (Headlease) Ltd | London | 2006 |
| 30 Exeter Road RTM Company Limited | London | 2023 |
| 30 Fairhazel Gardens Management Limited | London | 1993 |
| 30 Fairlop Road Limited | London | 2001 |
| 30 Ferndale Avenue RTM Company Limited | London | 2021 |
| 30 Fernlea Road Management Company Limited | London | 1994 |
| 30 Fernshaw Road, London SW10 Limited | London | 1986 |
| 30 Fleet Road Management Company Limited | Fleet | 2005 |
| 30 Fontenoy Road Management Limited | London | 1998 |
| 30 Friern Road Freehold Ltd | London | 2015 |
| 30 Frognal Lane Freehold Limited | London | 2023 |
| 30 Gladstone Place BN2 Limited | Brighton | 2020 |
| 30 Glazbury Road Freehold Limited | London | 2014 |
| 30 Gledstanes Road Limited | London | 1998 |
| 30 Gleneagle Road Management Limited | London | 1994 |
| 30 Glenhurst Freehold Limited | London | 2020 |
| 30 Gloucester Crescent RTM Company Limited | London | 2013 |
| 30 Gloucester Terrace RTM Company Limited | London | 2009 |
| 30 Grange Road Ltd | Eastbourne | 2021 |
| 30 Great Pulteney Street Limited | Corsham | 1975 |
| 30 Green Street Limited | Pinner | 2000 |
| 30 Greenhill Limited | Poole | 2001 |
| 30 Grosvenor Place (Bath) Limited | North East Somerset | 1979 |
| 30 Grosvenor Place Management Company Limited | Newcastle Upon Tyne | 2012 |
| 30 Gunter Grove Limited | London | 2018 |
| 30 Haldon Road Management Company Limited | Exeter | 1990 |
| 30 Hammelton Road Management Company Limited | | 1996 |
| 30 Hampton (Management) Company Limited | Bristol | 2002 |
| 30 Harcourt Terrace Limited | London | 1997 |
| 30 Harlech Road Management Company Limited | Liverpool | 2010 |
| 30 Haslemere Road (Management) Co. Limited | | 1990 |
| 30 Hemberton Road Limited | London | 1987 |
| 30 Hemstal Road Management Company Limited | London | 1994 |
| 30 Henrietta Street Bath Management Limited | Bath | 2021 |
| 30 Highview Road Management Limited | London | 1982 |
| 30 Highweek Road Management Ltd | Torquay | 2018 |
| 30 Hitherfield Road Freehold Limited | Cranleigh | 2020 |
| 30 Holly Grove Limited | London | 2002 |
| 30 Hornton ST Freehold Limited | London | 2015 |
| 30 Howard Road Limited | London | 1979 |
| 30 Hyde Park Square (London) Limited | London | 1996 |
| 30 Ickburgh Road RTM Company Limited | London | 2022 |
| 30 Kemplay Road Freehold Limited | London | 2018 |
| 30 Kempsford Gardens Limited | Knutsford | 2006 |
| 30 Kings Avenue Management Company Limited | London | 1986 |
| 30 Kings Road Property Management Limited | London | 2011 |
| 30 Kirkdale Management Company Limited | London | 2006 |
| 30 Kyverdale Road Limited | London | 2013 |
| 30 Lancaster Road (SE25) Freehold Management Limited | London | 2014 |
| 30 Landguard Road Shirley RTM Company Limited | Upham | 2014 |
| 30 Lansdowne Place Management Limited | East Sussex | 1983 |
| 30 Lansdowne Road Flats RTM Company Limited | Bedford | 2011 |
| 30 Limburg Road Limited | Essex | 2004 |
| 30 Linden Gardens Management Company Limited | London | 2009 |
| 30 Link Way RTM Company Limited | Romford | 2022 |
| 30 Little London Management Limited | West Sussex | 2005 |
| 30 Lower Addison Gardens Limited | London | 1996 |
| 30 Lower Bristol Road Management Company Limited | Weston-Super-Mare | 1994 |
| 30 Lower Redland Road (Management) Limited | Bristol | 1986 |
| 30 Ludlow Road Ltd | Guildford | 2023 |
| 30 Lupus Street Freehold Limited | London | 2019 |
| 30 Management Limited | Nottingham | 2003 |
| 30 Mannering Road Management Company Limited | Liverpool | 2007 |
| 30 Manor Park Freehold Limited | London | 2013 |
| 30 Maple Road Freehold Limited | Surbiton | 2023 |
| 30 Marine Parade Property Management Limited | Great Yarmouth | 1990 |
| 30 Marlborough Buildings Bath RTM Company Ltd | Bath | 2013 |
| 30 Marlborough Road Limited | London | 2022 |
| 30 Marquis Road Limited | | 2007 |
| 30 Marylands Limited | London | 2014 |
| 30 Maxman Limited | Bangor | 2017 |
| 30 Meadow Street Avonmouth Management Company Limited | Bristol | 2005 |
| 30 Meridian Place (Clifton) Limited | Bristol | 1983 |
| 30 Merton Road RTM Company Limited | Southsea | 2025 |
| 30 Mill Road Residents Ltd | Worthing | 2025 |
| 30 Montague Road Limited | Richmond | 2016 |
| 30 Montpelier Street Management Company Limited | Shoreham-By-Sea | 1995 |
| 30 Montpellier Villas Management Ltd | Cheltenham | 2024 |
| 30 Montrose Close Weymouth Management Company Limited | Portland | 2017 |
| 30 Morton Road (Management) Limited | Exmouth | 2007 |
| 30 Nelson Road Freehold Limited | Southsea | 2022 |
| 30 Nelson Street RTM Company Limited | Ryde | 2021 |
| 30 Nevern Place Freehold Limited | London | 2007 |
| 30 Newton Road Ltd | London | 2020 |