| 20 Northwood Road Management Limited | London | 2001 |
| 20 Old Bethnal Green Road RTM Company Ltd | Marlborough | 2019 |
| 20 Old Shoreham Road (Freehold) Limited | Lewes | 2018 |
| 20 Orchard Road Limited | Orpington | 2005 |
| 20 Palm Bay Avenue (Freehold) Ltd | Margate | 2022 |
| 20 Palmeira Square Management Ltd. | Hove | 1998 |
| 20 Palmerston Road RTM Company Limited | Westcliff On Sea | 2017 |
| 20 Park Avenue Management Limited | Southport | 2006 |
| 20 Park Avenue N13 Limited | London | 2017 |
| 20 Parkside Close Management Company Limited | Gloucester | 2013 |
| 20 Parsifal Road Freehold Limited | London | 2022 |
| 20 Peppard RD Ltd | Pinner | 2019 |
| 20 Pinfold Road Management Company Limited | | 1989 |
| 20 Portland Road (Hove) Limited | Hove | 2007 |
| 20 Prince of Wales Terrace Limited | London | 1988 |
| 20 Princes Street RTM Company Ltd | Colchester | 2021 |
| 20 Purbeck Road Management Company Limited | Ashford | 2017 |
| 20 Queen's Gate Gardens Limited | Kettering | 1980 |
| 20 Queens Avenue Management Limited | London | 2001 |
| 20 Queens Gate Place Freehold Limited | London | 2009 |
| 20 Queens Road (Twickenham) Management Limited | Teddington | 2023 |
| 20 Queens Terrace Freehold Co Ltd | London | 2023 |
| 20 Radnor Bridge Road RTM Company Limited | Folkestone | 2021 |
| 20 Raleigh Gardens Limited | | 1999 |
| 20 Ramsden Road Freehold Ltd | London | 2020 |
| 20 Ranelagh Villas Limited | Hove | 2010 |
| 20 Redcliffe Gardens Management Limited | London | 1997 |
| 20 Redcliffe Gardens RTM Company Limited | London | 2017 |
| 20 Redfield Lane Management Limited | London | 2013 |
| 20 Redland Park Management Company Limited | Redland | 2001 |
| 20 Regent Street Management Company Ltd | Dawlish | 2011 |
| 20 Ribblesdale Road Management Limited | London | 2002 |
| 20 Richmond Avenue RTM Company Limited | Chichester | 2018 |
| 20 Richmond Road Taunton (Management) Limited | Chard | 1991 |
| 20 Richmond Terrace Management Company Limited | Shepton Mallet | 2008 |
| 20 Roderick Road Limited | | 1988 |
| 20 Roland Gardens Limited | London | 1997 |
| 20 Rosary Gardens Limited | London | 2005 |
| 20 Rosecroft Avenue Tenants Management Company Limited | Borehamwood | 1972 |
| 20 Rosemont Road Management Limited | London | 2004 |
| 20 Rosslyn Road Ltd | Harrow | 2025 |
| 20 Sackville Gardens (Hove) Limited | Shoreham-By-Sea | 2009 |
| 20 Sackville Road (Hove) Limited | Hove | 2018 |
| 20 Sackville Street Management Company Limited | Romsey | 2008 |
| 20 Saltram Crescent Management Ltd | London | 2012 |
| 20 Sangora Road Limited | Harpenden | 2003 |
| 20 Sears Street RTM Company Limited | London | 2022 |
| 20 Sefton Road Limited | Harrogate | 2010 |
| 20 Shails Lane Limited | Croydon | 1996 |
| 20 Shakespeare Road Limited | Worthing | 2017 |
| 20 Shortlands Grove Management Company Limited | Bromley | 2007 |
| 20 Sidney Avenue Limited | London | 2005 |
| 20 Sinclair Road RTM Company Limited | Harlow | 2017 |
| 20 Snowdown Close Management Company Ltd | Longfield | 2016 |
| 20 Somers Road Management Company Limited | Surrey | 1995 |
| 20 South Hill Park Gardens RTM Company Ltd | London | 2017 |
| 20 Southampton Road Limited | | 1997 |
| 20 Southampton Street Management Company Limited | Croydon | 2013 |
| 20 Southside (WSM) Ltd | Weston-Super-Mare | 2008 |
| 20 ST Andrews C (SW18) RTM Company Limited | Sunbury-On-Thames | 2024 |
| 20 ST Charles Square RTM Company Limited | London | 2023 |
| 20 ST James Place West Limited | Plymouth | 2007 |
| 20 ST Johns Road Clevedon Flat Management Co Limited | North Somerset | 1988 |
| 20 ST Luke's Road Residents Association Limited | | 1999 |
| 20 ST Mark's Hill Limited | Surbiton | 2012 |
| 20 ST Marys Road Limited | East Molesey | 2024 |
| 20 ST Michael's Place (Brighton) Limited | Hove | 2017 |
| 20 ST. Andrewgate, York (Management Company) Limited | York | 1983 |
| 20 ST. Aubyns Lessees Limited | Hove | 2003 |
| 20 ST. German's Road Limited | | 1993 |
| 20 Stanley Crescent Limited | London | 1994 |
| 20 Stanthorpe RD RTM Company Ltd | London | 2020 |
| 20 Station Road Wokingham Management Company Limited | Wokingham | 2008 |
| 20 Steeles Road Freehold Limited | London | 2011 |
| 20 Sydenham Road Ltd | London | 2023 |
| 20 Tetherdown Management Company Limited | | 2002 |
| 20 the Avenue Limited | London | 2008 |
| 20 the Elms Management (RTM) Company Limited | Trowbridge | 2014 |
| 20 the Highway Management Limited | London | 1985 |
| 20 Thurlow Hill Limited | | 1999 |
| 20 Tregunter Road Limited | London | 1998 |
| 20 Union Crescent RTM Company Ltd | Canterbury | 2018 |
| 20 Upper Rock Gardens Limited | Brighton | 2002 |
| 20 Upper Wickham Lane RTM Company Limited | Dartford | 2025 |
| 20 Upton Avenue Management Company Limited | London | 2016 |
| 20 Ventnor Villas (Hove) Limited | Hove | 2006 |
| 20 Veronica Road (Freehold) Limited | London | 2002 |
| 20 Victoria Maintenance Limited | Ipswich | 2022 |
| 20 Victoria Road (Crosby) Management Company Limited | Liverpool | 2020 |
| 20 Waldegrave Road Management Company Limited | London | 1993 |
| 20 Walker Terrace, Plymouth, Limited | Torquay | 1980 |
| 20 Wallwood Road Management Company Limited | London | 2008 |
| 20 Walmer Road Management Company Limited | Liverpool | 1988 |
| 20 Waterloo Street Limited | Hove | 2000 |
| 20 Wathen Road Limited | Dorking | 2015 |
| 20 Waverley Road (Bristol) Limited | Bristol | 2021 |
| 20 Weech Road Limited | London | 1973 |
| 20 Wellesley Road Residents Limited | London | 1980 |
| 20 Wellfield Avenue Management Limited | London | 2001 |
| 20 Wellington Crescent Management Company Limited | Ramsgate | 2002 |