| 15 Hafer Road Management Company Limited | London | 2010 |
| 15 Hallville MGT Company Ltd | Liverpool | 2021 |
| 15 Hampton Road RTM Company Limited | Kingston Upon Thames | 2008 |
| 15 Hargrave Road RTM Company Limited | London | 2025 |
| 15 Hartfield Road Limited | St. Leonards-On-Sea | 2001 |
| 15 Hartington Road (Brighton) Freehold Limited | Brighton | 2025 |
| 15 Harts Close Kidlington Management Company Limited | Witney | 2004 |
| 15 Hatherley Road Management Company Ltd | Colchester | 2023 |
| 15 HAY Hill Management Limited | London | 1992 |
| 15 Hazelmere Road NW6 6PY Limited | Colchester | 2009 |
| 15 Henrietta Street Limited | Bath | 2016 |
| 15 Hermon Hill RTM Company Limited | London | 2020 |
| 15 HG1 1HL Management Company Ltd | Harrogate | 2021 |
| 15 High Street Yardley Gobion Management Company Limited | Milton Keynes | 2025 |
| 15 Highbury Grange Management Co Limited | | 1990 |
| 15 Highbury Hill Limited | | 1980 |
| 15 Higher Market Street Management Company Limited | Truro | 2004 |
| 15 Highfield Road Apartments Limited | Ilfracombe | 2016 |
| 15 Hitherfield Road RTM Company Limited | London | 2024 |
| 15 Ivanhoe Road Management Company Limited | Liverpool | 2002 |
| 15 Kempshott Road Freehold Limited | London | 2014 |
| 15 Kensington Court Management Limited | Bromley | 1978 |
| 15 KER Limited | London | 2020 |
| 15 Kestrel Avenue Limited | London | 2018 |
| 15 Kings Gardens Hove Limited | Brighton | 1994 |
| 15 Kingscroft Road Management Company Limited | London | 2013 |
| 15 Kirkley Cliff (Lowestoft) Management Company Limited | Lowestoft | 2024 |
| 15 Kitto Road RTM Company Limited | London | 2017 |
| 15 Knowle Road Management Limited | Bristol | 2015 |
| 15 Lambridge Place (Bath) Management Company Limited | Bath | 1998 |
| 15 Langland Gardens Freehold Company Limited | London | 2003 |
| 15 Lanhill Road Freehold Limited | Sutton | 2017 |
| 15 Lanhill Road RTM Company Limited | London | 2014 |
| 15 Lansdown Place Management Limited | Cheltenham | 2022 |
| 15 Lansdowne Street (Hove) Limited | Worthing | 1998 |
| 15 Lawn Road, Stafford, Management Company Limited | Barking | 2004 |
| 15 Lawrie Park Road RTM Company Limited | Bromley | 2016 |
| 15 Lennox Gardens Limited | Hoddesdon | 2015 |
| 15 LG Limited | Andover | 2001 |
| 15 Limes Grove Limited | London | 2017 |
| 15 Linden Gardens Freehold Limited | Surrey | 1997 |
| 15 Linden Road (Management) Company Limited | Bristol | 1988 |
| 15 Lipson Road Limited | Plymouth | 2025 |
| 15 Lisburn Road Management Ltd | Newry | 2017 |
| 15 Livingstone Road Bath Limited | Bath | 2018 |
| 15 Lodore Road Management Company Limited | Bristol | 2025 |
| 15 Longton Avenue Limited | London | 2007 |
| 15 Loraine Road Limited | London | 2016 |
| 15 Lower Oldfield Park (Bath) Management Co. Limited | Bath | 2001 |
| 15 Lyndhurst Road Freehold Limited | London | 2006 |
| 15 Lynton Terrace Limited | Milton Keynes | 2003 |
| 15 Malvern Road Management Limited | London | 2017 |
| 15 Malwood Road Limited | | 1986 |
| 15 Manor Mount SE23 Management Company Limited | London | 2004 |
| 15 Marlborough Buildings Bath Limited | Bath | 2017 |
| 15 Marmion Road (Freehold) Limited | London | 1998 |
| 15 Melville Road Residents Association Limited | East Sussex | 1996 |
| 15 Methley Street RTM Company Limited | London | 2008 |
| 15 Methuen Park Management Company Limited | London | 2000 |
| 15 Miles Road Limited | Salisbury | 1985 |
| 15 Millers Road Brighton Limited | Brighton | 2025 |
| 15 Montagu Square Limited | London | 1989 |
| 15 Mornington Road Limited | Ashford | 2011 |
| 15 Mount Gould Road (Plymouth) Limited | Plymouth | 1990 |
| 15 Mount Pleasant Villas Limited | London | 1994 |
| 15 Mount Street (Shrewsbury) Management Company Limited | Sudbury | 1995 |
| 15 Navarino Road RTM Company Limited | London | 2019 |
| 15 Neville Road Ltd | Liverpool | 2026 |
| 15 NKR RTM Company Ltd | London | 2021 |
| 15 Norfolk Square BN1 Freehold Limited | Shoreham By Sea | 2017 |
| 15 Normanton Limited | Basingstoke | 2003 |
| 15 North Common Road Ealing Limited | London | 1996 |
| 15 North Park Residents Company Limited | London | 2017 |
| 15 North Villas Management Company Limited | London | 1987 |
| 15 North Walls Limited | Eastleigh | 2003 |
| 15 Northampton Road Limited | Beckenham | 2011 |
| 15 Noyna Road RTM Company Limited | | 2006 |
| 15 Oak Tree Dell RTM Company Limited | Wadhurst | 2022 |
| 15 Old Tovil Road Flat Management Limited | Dartford | 2014 |
| 15 Palace Court Limited | New Milton | 1995 |
| 15 Palace Gardens Terrace Limited | London | 1981 |
| 15 Palace Gate Management Limited | London | 2001 |
| 15 Palmeira Avenue Hove Limited | East Sussex | 2000 |
| 15 Pantiles Management Company Limited | Surrey | 2003 |
| 15 Parkhurst (Bexhill) Limited | Bexhill-On-Sea | 2022 |
| 15 Parliament Hill Limited | London | 2007 |
| 15 Pattison Road Management Company Limited | | 1998 |
| 15 PD Ltd | York | 2023 |
| 15 Peak Hill Gardens Ltd | London | 2018 |
| 15 Pembridge Square Management Limited | | 1991 |
| 15 Percy Terrace Limited | Plymouth | 2023 |
| 15 Pevensey Road Limited | Shrewsbury | 2004 |
| 15 Poppy Place RTM Company Limited | Sheffield | 2020 |
| 15 Porchester Square Limited | Poole | 2013 |
| 15 Portchester Road Management Company Limited | Bournemouth | 2003 |
| 15 Portland Road Freehold Limited | Tunbridge Wells | 2022 |
| 15 Powd Management Company Limited | London | 2023 |
| 15 Pownall Gardens (Management) Limited | Hounslow | 1981 |
| 15 Prideaux Road Limited | Richmond | 2021 |
| 15 Prince of Wales Terrace Limited | Scarborough | 2018 |