| 15 Clifton Villas Ltd | London | 2013 |
| 15 CM Ltd | Glasgow | 2024 |
| 15 Colinette Road Freehold Limited | Rickmansworth | 2008 |
| 15 College Road Management Company Limited | Hertfordshire | 2007 |
| 15 Courtfield Gardens Freehold Limited | London | 2009 |
| 15 Cranbury Place Southampton Management Company Limited | Andover | 2007 |
| 15 CS Limited | Borehamwood | 2020 |
| 15 Cumberland Park Management Limited | London | 1994 |
| 15 D.A. Chiswick Limited | Chiswick | 2021 |
| 15 Denmark Avenue (Freehold) Limited | London | 2017 |
| 15 Denning Road Management Company Limited | London | 1996 |
| 15 Dover Road Brighton Ltd | Brighton | 2011 |
| 15 Earlsfield Road Limited | Balham | 2001 |
| 15 Effingham Road Limited | Surrey | 1997 |
| 15 Elmgrove Road Management Company Limited | Bristol | 1990 |
| 15 Essex Grove, London SE19 3SX Limited | London | 2022 |
| 15 Fitzjohns Avenue Freehold Limited | London | 2020 |
| 15 Fulham Park Gardens (Freehold) Limited | | 1993 |
| 15 George Street (Reading) Management Company Limited | Wokingham | 2016 |
| 15 Great James Street Limited | London | 2015 |
| 15 Greencroft Freehold Limited | London | 2012 |
| 15 Grimston Avenue Management Limited | Folkestone | 2000 |
| 15 Grosvenor Road (Freehold) Limited | London | 2011 |
| 15 Halfpenny LDN Limited | London | 2019 |
| 15 Hartley Road Ltd | Luton | 2014 |
| 15 Hayles Street (RTM) Company Limited | London | 2010 |
| 15 Healey Street Limited | London | 1988 |
| 15 Heath Drive Limited | Watford | 1977 |
| 15 Heath Hurst RD Co Limited | Alton | 2025 |
| 15 Helix Road Freehold Limited | London | 2019 |
| 15 Henshaw Street Limited | London | 2023 |
| 15 High Street B14 7DW RTM Company Limited | Washington | 2024 |
| 15 Hill Ltd | Middleton | 2024 |
| 15 Hillside Management Company Limited | Stoke Poges | 2006 |
| 15 Holliers Hill Limited | Bexhill On Sea | 2016 |
| 15 Hoxton Market Limited | London | 2026 |
| 15 Huntsman Road Ltd | London | 2025 |
| 15 Hyde Park Square (Freehold) Limited | London | 1998 |
| 15 Hyde Park Square Limited | London | 1982 |
| 15 Ilsham Road Torquay Limited | Torquay | 2025 |
| 15 Lambert Management Co Limited | Faversham | 2016 |
| 15 Lansdowne Place (Crystal Palace) RTM Company Limited | Bromley | 2018 |
| 15 Laverstoke Invest Ltd | London | 2024 |
| 15 Leeds Road Ltd | Harrogate | 2015 |
| 15 Lockmead Ltd | London | 2022 |
| 15 Lostwithiel Street Management Company Limited | Cardiff | 2007 |
| 15 Mabley Street Limited | | 1997 |
| 15 Mahoney Green Limited | Norwich | 2003 |
| 15 Market Square Limited | Sidcup | 2024 |
| 15 Marloes Road Limited | London | 1988 |
| 15 Montpelier Limited | Thornton-Cleveleys | 2013 |
| 15 Montpelier Road Limited | Brighton | 2012 |
| 15 Montpelier Street (Brighton) Limited | Brighton | 2004 |
| 15 Morton Road Management Limited | Bristol | 2007 |
| 15 Mount Street Limited | | 1991 |
| 15 Mowbray Road Limited | | 1998 |
| 15 Needham Road Freehold Limited | London | 2009 |
| 15 Northbrook Road Freehold Company Limited | London | 2014 |
| 15 Northbrook RTM Company Limited | Ashford | 2009 |
| 15 Ogwen Terrace Limited | Bangor | 2010 |
| 15 Oval Road Limited | London | 2010 |
| 15 Parc Road Ltd | Swansea | 2018 |
| 15 Park Hill RTM Company Ltd | Bromley | 2015 |
| 15 Park View Management Company Limited | Harrogate | 2015 |
| 15 Peascod Street Ltd | Windsor | 2026 |
| 15 Pember Road Limited | Twickenham | 2003 |
| 15 PEN Y LAN Road Management Company Limited | Cardiff | 2019 |
| 15 Pine Gardens Management Company Limited | Horley | 2008 |
| 15 Primrose Avenue Ltd | Bristol | 2020 |
| 15 Princeton Court Limited | London | 2014 |
| 15 Property Ltd | London | 2016 |
| 15 QGT Ltd | London | 2026 |
| 15 Queens Road Flat Management Limited | Folkestone | 2004 |
| 15 Queen’S Gate Terrace Ltd | London | 2026 |
| 15 Redburn Street Limited | London | 2000 |
| 15 Redcliffe Gardens Limited | | 1991 |
| 15 Redcliffe Square Co Limited | London | 1997 |
| 15 River Street Freehold Limited | Stanmore | 2006 |
| 15 Rosendale Road London Limited | London | 2014 |
| 15 Rowan Crescent Ltd | London | 2021 |
| 15 Russell Gardens Mews Ltd | London | 2020 |
| 15 Second Avenue Management Company Limited | London | 2019 |
| 15 SHP 1ST Floor TTE Ltd | Bordon | 2022 |
| 15 Shpg Management Co. Limited | London | 2009 |
| 15 Spenser Road Tenants Management Company Limited | London | 2003 |
| 15 ST Davids Ltd | London | 2025 |
| 15 ST Davids Road Ltd | London | 2025 |
| 15 ST Georges Terrace Brighton Limited | Uckfield | 2009 |
| 15 ST Ursula Grove Ltd | London | 2018 |
| 15 Star Investments Ltd | Luton | 2013 |
| 15 Star Ltd | Luton | 2010 |
| 15 Stone Street Limited | Hove | 2010 |
| 15 Stonor Road Limited | | 1997 |
| 15 Stowe Road (Management) Limited | Bristol | 1987 |
| 15 Sun ST Management Limited | Southend On Sea | 2026 |
| 15 Sundridge Management Company Limited | Kent | 2004 |
| 15 Sylvan Avenue RTM Company Limited | Newcastle Upon Tyne | 2010 |
| 15 Talbot Road Limited | London | 2000 |
| 15 Tasso Road Limited | Henley-On-Thames | 2017 |
| 15 TEN Limited | Bristol | 2022 |