| 49 Brondesbury Villas Limited | Households | 1991 |
| 49 Broxholm Road Management Company Ltd | Households | 2016 |
| 49 Buckland Crescent Limited | Real estate | 2000 |
| 49 Canadian Avenue Limited | Households | 2021 |
| 49 Cavendish Road Management Company Limited | Households | 1990 |
| 49 Cavendish Road NW6 Residents Limited | Households | 2001 |
| 49 Cecile Park Limited | Households | 2015 |
| 49 Chatsworth Road RTM Company Ltd | Households | 2014 |
| 49 Christchurch Avenue Management Limited | Households | 2018 |
| 49 Clanricarde Gardens Management Company Limited | Households | 1999 |
| 49 Cleveland Square Limited | Households | 2015 |
| 49 Colville Gardens RTM Company Limited | Households | 2009 |
| 49 Compayne Gardens RTM Company Limited | Households | 2010 |
| 49 Consulting LLP | | 2023 |
| 49 Cromford Road Property Management Limited | Real estate | 2008 |
| 49 Cumbrian Gardens Management Ltd | Real estate | 2022 |
| 49 Dafforne Road Company Limited | Hospitality | 2008 |
| 49 Derbyshire Street RTM Company Ltd | Households | 2024 |
| 49 Disraeli Road Limited | Real estate | 1988 |
| 49 Drakefield Road Limited | Households | 2002 |
| 49 East Road Limited | Real estate | 2021 |
| 49 Eaton Place RTM Company Limited | Households | 2019 |
| 49 Edward Street RTM Company Limited | Professional & scientific | 2012 |
| 49 Ellora Road Ltd | Real estate | 2024 |
| 49 Evering Road Limited | Households | 2019 |
| 49 Gayton Road Management Limited | Professional & scientific | 1984 |
| 49 Glengall Road Limited | Households | 2015 |
| 49 Gloucester Road Limited | Real estate | 2015 |
| 49 Gordon Road W5 Residents Association Limited | Households | 1996 |
| 49 Great North Way Ltd | Real estate | 2018 |
| 49 Hallam Street Limited | Real estate | 1978 |
| 49 Hamilton Road Ltd | Real estate | 2003 |
| 49 Hartismere Road (Management) Limited | Real estate | 1999 |
| 49 Harwood Road Limited | Households | 1998 |
| 49 Hassocks Limited | Real estate | 2024 |
| 49 Hereford Road Freeholders Limited | Households | 2010 |
| 49 Heybridge Avenue Ltd | Real estate | 2015 |
| 49 Holland Park RTM Company Limited | Extraterritorial | 2015 |
| 49 Hookstone Road Freehold Ltd | Real estate | 2025 |
| 49 Hornton Street Freehold Limited | Households | 2024 |
| 49 Houston Road RTM Company Limited | Households | 2018 |
| 49 Howitt Road (London) Management Company Limited | Households | 2013 |
| 49 Jackson Road Limited | Households | 2024 |
| 49 Knollys Road Management Limited | Households | 1996 |
| 49 Lamont Road Limited | Households | 2001 |
| 49 Law Russell House Limited | Real estate | 2025 |
| 49 LCR RTM Company Limited | Households | 2024 |
| 49 Leamington Road Villas Management Company Limited | Households | 1995 |
| 49 Lewisham Hill Limited | Households | 2003 |
| 49 Lexington RTM Company Limited | Real estate | 2026 |
| 49 Linden Gardens RTM Company Limited | Real estate | 2015 |
| 49 Lowfield Road Management Company Limited | Real estate | 2014 |
| 49 Madeley Road Management Limited | Households | 1989 |
| 49 Manor Mount RTM Company Limited | Households | 2010 |
| 49 Marchmont Street Ltd | Real estate | 2019 |
| 49 Maresfield Gardens London (Freehold) Ltd | Real estate | 2013 |
| 49 Millmarton RD Ltd | Real estate | 2025 |
| 49 Mowlem Street Limited | Construction | 2014 |
| 49 Muswell Hill RTM Company Limited | Real estate | 2014 |
| 49 Myddleton Road Management Limited | Hospitality | 1994 |
| 49 North END Road Limited | Real estate | 2002 |
| 49 Okehampton Limited | Households | 2025 |
| 49 Ossington Street Freehold Limited | Households | 2013 |
| 49 Paddington Limited | Real estate | 2019 |
| 49 Performance Ltd | Professional & scientific | 2025 |
| 49 Perham Road Limited | Real estate | 2012 |
| 49 Portland Road (Freehold) Limited | Households | 2020 |
| 49 Records Limited | Information & communication | 2022 |
| 49 Saltoun Road Management Limited | Households | 1992 |
| 49 Sandstone Bobcat LDN Limited | Real estate | 2019 |
| 49 Settles Street Freehold Company Limited | Households | 2021 |
| 49 Settles Street RTM Company Limited | Households | 2007 |
| 49 Simpson Street Freehold Limited | Real estate | 2007 |
| 49 ST Georges Road (Brighton) Limited | Households | 2022 |
| 49 ST Georges Road Management Company Limited | Professional & scientific | 2011 |
| 49 ST Stephens Gardens Limited | Households | 2000 |
| 49 SW9 Ltd | Real estate | 2023 |
| 49 Tabernacle Street Ltd | Other services | 2025 |
| 49 the Drive Management Limited | Households | 2008 |
| 49 Tierney Road Freehold Limited | Real estate | 2020 |
| 49 Wandsworth Common Northside Limited | Households | 1995 |
| 49 Warwick Road (Management) Company Limited | Households | 1986 |
| 49 Westwood Hill Management Company Limited | Households | 1998 |
| 49 Winchendon Road Freehold Limited | Households | 2024 |
| 49 Woodville Gardens Limited | Households | 1986 |
| 49-1 for Tea Trading Ltd | Wholesale & retail | 2025 |
| 49-50 Bavent Road Freehold Limited | Households | 2020 |
| 49-50 Berkeley Square Limited | Other services | 2024 |
| 49-51 Byrne RD Ltd | Real estate | 2024 |
| 49-51 Melina RD Limited | Households | 1990 |
| 49-55 Green Road N14 Limited | Households | 2018 |
| 49-59 Old Street Ltd | Real estate | 2026 |
| 49/51 Cavendish Avenue Residents Company Limited | Extraterritorial | 2002 |
| 49/51 Constantine Road Limited | Real estate | 2011 |
| 49/51 Nevis Road Management Limited | Real estate | 2006 |
| 49/56 Elgin Mansions (Management) Limited | Households | 1981 |
| 49/65 Granville Road Residents Society Limited | Households | 1969 |
| 490-492 Fulham Road Ltd | Real estate | 2025 |
| 491 Limited | Wholesale & retail | 2021 |
| 491 Media Limited | Administrative & support | 2014 |