| 30 Nightingale Ltd | Portsmouth | 2017 |
| 30 Norfolk Road Limited | Littlehampton | 2006 |
| 30 Norfolk Square Limited | Brighton | 1988 |
| 30 North Street (Carshalton) RTM Company Limited | Carshalton | 2013 |
| 30 Northampton Square Management Company Ltd | London | 2022 |
| 30 Oakley Street Limited | London | 1995 |
| 30 Old Street (London) Management Company Limited | London | 2025 |
| 30 Osterley Park View Management Company Limited | Colindale | 1987 |
| 30 Palewell Park Limited | London | 1997 |
| 30 Park Avenue RTM Company Limited | London | 2019 |
| 30 Park Road (Bexhill) Limited | Bexhill-On-Sea | 2003 |
| 30 Parkfield Ltd | Wirral | 2023 |
| 30 Pen-Y-Lan Road RTM Company Limited | Cardiff | 2012 |
| 30 Penn House Management Company Limited | Rickmansworth | 2024 |
| 30 Pepys Road Freehold Ltd | Fleet | 2020 |
| 30 Petherton Road Management Company Limited | Chepstow | 1998 |
| 30 Portland Place Limited | Warwick | 2001 |
| 30 Portland Rise N4 Freehold Limited | London | 2023 |
| 30 Potter Street (Worksop) Management Limited | Oldham | 2026 |
| 30 Princes Gate Management Company Limited | Peterborough | 2004 |
| 30 Priory Terrace Limited | 250 Finchley Road | 2015 |
| 30 Prospect Road Freehold Limited | St. Albans | 2019 |
| 30 Queens Road Wallington (Management) Limited | Surrey | 1995 |
| 30 Queensdown Road Limited | | 2005 |
| 30 Redcliffe Gardens Management Company Limited | Hemel Hempstead | 2000 |
| 30 Rosary Gardens Management Limited | | 1994 |
| 30 Rosemont Ltd | London | 2023 |
| 30 Rosenthal Road RTM Company Limited | London | 2018 |
| 30 Rusholme Road Ltd | London | 1999 |
| 30 Russell Street Management Limited | Wickford | 2007 |
| 30 Rutland Gate Limited | Croydon | 1982 |
| 30 Saltram Crescent Management Limited | | 2003 |
| 30 Sanderson Road Limited | Newcastle Upon Tyne | 2004 |
| 30 Selborne Road Management Company Limited | Rickmansworth | 2008 |
| 30 Shaftesbury Road Limited | Southsea | 2008 |
| 30 Shenley Road Freehold Company Ltd | London | 2023 |
| 30 Sisters Avenue Limited | London | 2023 |
| 30 Sloane Garden Freehold Limited | London | 2007 |
| 30 Somerset Road Management Company Ltd | Bournemouth | 2026 |
| 30 South Road WSM Management Limited | Bristol | 2000 |
| 30 South Terrace Limited | Worthing | 2013 |
| 30 South Villas Limited | London | 2008 |
| 30 Southleigh Road Clifton Limited | Bristol | 2016 |
| 30 Southside (Weston-Super-Mare) Management Company Limited | Weston-Super-Mare | 1988 |
| 30 Springdale Road Limited | Grantham | 2002 |
| 30 Springfield Drive Flat Management Company Limited | Essex | 1993 |
| 30 ST Augustines Road Limited | | 1998 |
| 30 ST Leonards Road Freehold Company Limited | Bexhill-On-Sea | 2020 |
| 30 ST. Andrews Road Management Company Limited | Hayling Island | 1998 |
| 30 St.Mary's Management Co. Limited | York | 1986 |
| 30 Stanhope Road Highgate Residents Association Limited | London | 1999 |
| 30 Stanmore Road Limited | London | 2017 |
| 30 Stowe Road (Freehold) Limited | London | 2003 |
| 30 Suffolk Road Management Company Limited | Lowestoft | 2021 |
| 30 Sweyn Road Freehold Limited | Margate | 2022 |
| 30 Sydney Road Limited | London | 2017 |
| 30 Tankerville Road RTM Company Limited | Norwich | 2005 |
| 30 Temple Street (Manco) Limited | Kidlington | 2024 |
| 30 Tetherdown Limited | London | 1988 |
| 30 Thames Road Management Company Limited | London | 1996 |
| 30 the Mall RTM Company Limited | Hemel Hempstead | 2010 |
| 30 Thornton Hill Management Limited | London | 2009 |
| 30 Tisbury Road (Hove) Freehold Company Limited | Guildford | 2023 |
| 30 Tite Street Management Company Limited | London | 2022 |
| 30 Tower Road Management Company Limited | Poole | 2019 |
| 30 Upper Addison Gardens (Management) Ltd | Malmesbury | 2017 |
| 30 Upper Grosvenor Road Limited | Tunbridge Wells | 2000 |
| 30 Upper Park Road Property Management Limited | London | 2019 |
| 30 Vernon Terrace (Brighton) Limited | Worthing | 2004 |
| 30 Victoria Road Management Company Limited | Cirencester | 2009 |
| 30 Warrington Crescent Limited | Tetbury | 1985 |
| 30 Wellington Park Limited | Belfast | 2018 |
| 30 Wellmeadow Road (London) Limited | London | 2017 |
| 30 West Park Clifton Management Company Limited | Bristol | 2001 |
| 30 Westbourne Gardens Hove RTM Company Limited | Hove | 2012 |
| 30 Westbourne Villas Limited | East Sussex | 2001 |
| 30 Weston Park Crouch END Limited | | 2003 |
| 30 Whitworth Road Management Limited | Bath | 2017 |
| 30 WHL Freehold Limited | London | 2026 |
| 30 Winchester Road Limited | London | 1995 |
| 30 Winchester Street Freehold Company Limited | London | 2024 |
| 30 Winchester Street Limited | Great Sutton | 1989 |
| 30, Brondesbury Villas Limited | London | 1978 |
| 30, Leathwaite Road, London, SW11 Limited | Hungerford | 1984 |
| 30, Warren Drive, Wallasey, Management Company Limited | Wallasey | 1984 |
| 30-30C Broadmead Management Company Limited | Tunbridge Wells | 2021 |
| 30-31 Stall Street Limited | Corsham | 2023 |
| 30-32 Arthur Road RTM Company Limited | Canterbury | 2019 |
| 30-32 Brook Path Limited | Slough | 2020 |
| 30-32 Cheltenham Street Management Company Limited | Somerset | 2023 |
| 30-32 Cranley Gardens Limited | Chesham | 2004 |
| 30-32 East Cliff (Dover) Freehold Company Limited | Gravesend | 2015 |
| 30-32 Gladstone Road Freehold Limited | Tunbridge Wells | 2025 |
| 30-32 Knight's Park Limited | Frome | 1984 |
| 30-32 Lower Boston Road Management Limited | Leatherhead | 2003 |
| 30-32 Marsh Lane (Stanmore) Management Company Limited | London Colney | 1987 |
| 30-32 Seven Sisters Road RTM Company Limited | London | 2025 |
| 30-32 Shakespeare Road Ltd | Worthing | 2024 |
| 30-32 ST Aubyns (Hove) Limited | Hove | 2006 |
| 30-32 ST Petersburgh Place Limited | Epping | 2004 |