| 13 Lonsdale Square Management Limited | | 1982 |
| 13 Lucien Road Limited | London | 1995 |
| 13 Lymington Road Limited | London | 2002 |
| 13 Malvern Road Limited | London | 2006 |
| 13 Mandela Street RTM Company Limited | Kingston Upon Thames | 2019 |
| 13 Manor Park Management Company Ltd | London | 2015 |
| 13 Marine Avenue (Hove) Limited | Hove | 1998 |
| 13 Marlborough Buildings (Bath) Management Company Ltd | Bath | 1999 |
| 13 Marsden Road Freehold Limited | Henley-On-Thames | 2022 |
| 13 Meadow Road Management Company Limited | Wilts | 1986 |
| 13 Meeching Road RTM Company Ltd | Brighton E Sussex | 2017 |
| 13 Melrose Place Bristol Management Limited | Malton | 1989 |
| 13 Meridian Place Management Limited | Bristol | 2006 |
| 13 Midland Road RTM Company Limited | Bristol | 2025 |
| 13 Minerva Road Flat Management Company Limited | Kingston Upon Thames | 2016 |
| 13 Montagu Place Management Ltd | London | 2014 |
| 13 Montpelier Road Brighton Limited | Hove | 2016 |
| 13 Montpelier Street (Brighton) Limited | Brighton | 2011 |
| 13 Montpellier Villas Residents Association Limited | Cheltenham | 1993 |
| 13 Moreton Road RTM Company Ltd | Epsom | 2016 |
| 13 Nelgarde Road RTM Company Limited | Maidstone | 2018 |
| 13 Norfolk Terrace (Brighton) Management Limited | Hove | 2000 |
| 13 Norman Road Residents Company Limited | Tunbridge Wells | 2005 |
| 13 North Villas London Limited | | 2004 |
| 13 Northbourne Road Limited | London | 2007 |
| 13 Northington Street Limited | London | 1999 |
| 13 Northumberland Terrace (Tynemouth) Limited | Tynemouth | 2016 |
| 13 Oakbury Road Ltd | London | 2018 |
| 13 Oakfield Place (Management) Limited | Bristol | 1981 |
| 13 Oakfield Road Management Company Limited | Shrewsbury | 1986 |
| 13 Oberstein Road Limited | London | 2020 |
| 13 Oseney Crescent Freehold Ltd | London | 2015 |
| 13 Ovington Square (Freehold) Limited | Bromley | 2003 |
| 13 Oxberry Avenue Freehold Limited | London | 2023 |
| 13 Oxford Road Management Company Limited | Swindon | 2007 |
| 13 Palmeira Avenue Limited | Hove | 1992 |
| 13 Palmerston Freehold Limited | London | 2018 |
| 13 Paragon Maintenance Limited | Ramsgate | 2024 |
| 13 Park Hall Road RTM Company Limited | London | 2020 |
| 13 Park Road RTM Company Limited | Portland | 2023 |
| 13 Park Street Management Company Limited | Taunton | 1991 |
| 13 Pellant Road Limited | Walsingham | 2002 |
| 13 Pembridge Square London Limited | Kettering | 2013 |
| 13 Pembroke Road Limited | Bourne End | 2004 |
| 13 Penn Road Residents Limited | London | 2002 |
| 13 Perham Road Limited | London | 1996 |
| 13 Philbeach Gardens Limited | | 1987 |
| 13 Pond Street Management Limited | London | 1997 |
| 13 Portland Place Bath (Management) Limited | | 1981 |
| 13 Priory Terrace Freehold Limited | Nottingham | 2006 |
| 13 Queen's Avenue Management Limited | London | 1987 |
| 13 Queen's Gate Gardens Management Company Limited | London | 2006 |
| 13 Queensborough Terrace Limited | London | 2006 |
| 13 Quex Road Management Limited | | 1988 |
| 13 Radnor Place RTM Company Limited | Plymouth | 2018 |
| 13 Ramsay Road, Management Limited | London | 2002 |
| 13 Redcatch Road Management Company Limited | Bristol | 2022 |
| 13 Redcliffe Square Limited | London | 1997 |
| 13 Redland Park Management Company Limited | Bristol | 1987 |
| 13 Regent Road Freehold Management Company Limited | Southport | 2025 |
| 13 Regents Park Road Management Company Limited | London | 2012 |
| 13 Richmond Terrace Management Company Limited | Bristol | 1990 |
| 13 Ridge Road Limited | London | 2011 |
| 13 Roehampton Lane Ltd | London | 2018 |
| 13 Romola Road Management Limited | London | 1990 |
| 13 Roundhill Crescent Limited | Brighton | 2005 |
| 13 Royal Park (Management Company) Limited | Avon | 1975 |
| 13 Russell Street Bath (Management) Limited | Bath | 1993 |
| 13 Sangora Road (Freehold) Limited | London | 2016 |
| 13 Satanita Road RTM Company Limited | Rochford | 2010 |
| 13 Saunders Street RTM Company Limited | Southport | 2024 |
| 13 Shaw Street Management Company Limited | Merseyside | 1990 |
| 13 Sinclair Road Limited | London | 2014 |
| 13 South Hill Management Limited | Guildford | 1998 |
| 13 Southgate Street Winchester Management Ltd | Camberley | 2024 |
| 13 Southleigh Road (Bristol) Management Company Limited | Bristol | 2017 |
| 13 ST Andrew's Square Limited | Chessington | 2002 |
| 13 ST Catherines Terrace Limited | Telscombe Cliffs | 2025 |
| 13 ST Georges Drive Freehold Limited | London | 2018 |
| 13 ST James Road Management Company Limited | Tunbridge Wells | 2001 |
| 13 ST John Way Management Company Limited | Dorchester | 2018 |
| 13 ST John's Grove Management Company Limited | | 2006 |
| 13 ST John's Park Blackheath Limited | London | 2006 |
| 13 ST. George's Drive Limited | London | 1982 |
| 13 ST. Mary's Terrace Limited | London | 1991 |
| 13 Stanbridge Road Management Limited | | 1997 |
| 13 Stanhope Road Limited | London | 2004 |
| 13 Stanlake Villas (Freehold) Limited | London | 2018 |
| 13 Station Road Management Limited | Epping | 2022 |
| 13 Staverton Road NW2 5EY Limited | London | 1999 |
| 13 Stavordale Road Management Limited | London | 2009 |
| 13 Steele's Road Management Limited | London | 1996 |
| 13 Strathblaine Road Limited | London | 2006 |
| 13 Sumner Place Limited | Bath | 2006 |
| 13 Sunny Bank (Freehold) Limited | Bromley | 2019 |
| 13 Sutherland Street Tenants Association Limited | | 1994 |
| 13 Tadmor Street Limited | Saffron Walden | 2016 |
| 13 Tavistock Place Limited | Baldock | 2003 |
| 13 the Avenue Clevedon (Management) Limited | Clevedon | 1984 |
| 13 the Avenue Freehold Ltd | Lincoln | 2025 |