| 25 Bridge Street Management Ltd | Households | 2026 |
| 25 Broomsleigh Street Freehold Limited | Households | 2018 |
| 25 Buckland Crescent Limited | Households | 1996 |
| 25 Buckleigh Road Limited | Households | 2022 |
| 25 Burr Road Limited | Hospitality | 2004 |
| 25 Cambray Road Limited | Real estate | 2025 |
| 25 Campden Hill Gardens Limited | Households | 1989 |
| 25 Canfield Place (Flats) Limited | Real estate | 2015 |
| 25 Chalcot Road Limited | Extraterritorial | 2010 |
| 25 Chalsey Road RTM Company Limited | Households | 2017 |
| 25 Charlton Road Management Limited | Households | 1991 |
| 25 Chesham Place Limited | Households | 1979 |
| 25 Chetwynd Road NW5 Management Company Limited | Real estate | 2002 |
| 25 Churchfield Road Management Co. Ltd. | Households | 1999 |
| 25 Clarendon Gardens Limited | Households | 1983 |
| 25 Cotswold Limited | Real estate | 2017 |
| 25 Courtnell Street Freehold Limited | Households | 2019 |
| 25 Cranbury Road Limited | Real estate | 2000 |
| 25 Crescent Road Limited | Households | 2021 |
| 25 Dane Street Property Management Company Ltd | Real estate | 2021 |
| 25 Digby Crescent Management Company Limited | Households | 2006 |
| 25 Draycott Place Limited | Real estate | 1971 |
| 25 Dynevor Road N16 Limited | Real estate | 2016 |
| 25 Eardley Crescent Limited | Households | 1974 |
| 25 Eastdown Park Management Limited | Households | 2001 |
| 25 Edith Grove (Residents) Limited | Households | 1987 |
| 25 Eleven Partners Limited | Financial services | 2025 |
| 25 Elsenham Street Management Company Limited | Households | 2013 |
| 25 Elsham Road Limited | Households | 2003 |
| 25 Epirus Road Management Company Limited | Households | 1990 |
| 25 Essex Road Management Company Limited | Extraterritorial | 2016 |
| 25 Fairholme Road Limited | Real estate | 1998 |
| 25 Fernhurst Road Limited | Households | 1989 |
| 25 Finborough Road Management Limited | Households | 1998 |
| 25 Fordwych Road (Management) Limited | Households | 1999 |
| 25 FPR Management Company Ltd | Households | 2007 |
| 25 Frames Ltd | Professional & scientific | 2019 |
| 25 Friars Place Lane (Acton) Limited | Households | 1999 |
| 25 Gladesmore Ltd | Real estate | 2020 |
| 25 Gleneagle Road Management Company Limited | Administrative & support | 1995 |
| 25 Glenthorne Freehold Limited | Households | 2022 |
| 25 Gordon Road Limited | Households | 2018 |
| 25 Granville Park Freehold Limited | Professional & scientific | 2013 |
| 25 Greencroft Gdns Limited | Households | 2009 |
| 25 Gresham Road Management Co Ltd | Households | 2014 |
| 25 Hamilton Road Management Company Limited | Households | 1996 |
| 25 Hamlet Road Freehold Limited | Real estate | 2022 |
| 25 Hampden Road Freehold Limited | Other services | 2019 |
| 25 Hanley Road Limited | Households | 2017 |
| 25 Harlesden Ltd | Real estate | 2026 |
| 25 Haydon Park Road Management Limited | Households | 2012 |
| 25 Herbert Street Freehold Company Ltd | Households | 2026 |
| 25 Hetley Road (Freehold) Limited | Households | 2019 |
| 25 Highgate West Hill Limited | Professional & scientific | 1970 |
| 25 Holdings Limited | Information & communication | 2024 |
| 25 Holland Park Gardens Limited | Extraterritorial | 1980 |
| 25 Hornsey Lane Gardens Limited | Households | 1978 |
| 25 Hornsey Rise Gardens London Ltd | Households | 2019 |
| 25 Hour Convenience Store Limited | Other services | 2011 |
| 25 Hours Ltd | Wholesale & retail | 2022 |
| 25 Ifield Road (London) Limited | Real estate | 2014 |
| 25 Jacksons Lane Management Company Limited | Households | 1998 |
| 25 Jermyn Street ST James's RTM Company Limited | Professional & scientific | 2004 |
| 25 Kempsford Gardens (Freehold) Company Limited | Households | 2008 |
| 25 Kent House Road Freehold Limited | Households | 2016 |
| 25 Lancaster Grove Limited | Real estate | 2025 |
| 25 Langland Gardens Management Limited | Households | 1982 |
| 25 Lansdowne Road (FH) Limited | Professional & scientific | 2003 |
| 25 Lansdowne Road (FH2) Limited | Administrative & support | 2015 |
| 25 Lansdowne Road (LH) Number 1 Limited | Professional & scientific | 2003 |
| 25 Lansdowne Road (LH) Number 2 Limited | Professional & scientific | 2003 |
| 25 Leighton Grove Freehold Ltd | Administrative & support | 2017 |
| 25 Leinster Terrace Limited | Wholesale & retail | 2023 |
| 25 Lexham Gardens Freehold Limited | Real estate | 2014 |
| 25 Limes Grove Flat Owners Limited | Households | 1997 |
| 25 Lonsdale Road Limited | Households | 2026 |
| 25 Luke Street Limited | Financial services | 2008 |
| 25 Lurline Gardens Limited | Households | 2004 |
| 25 Lyncroft Gardens Management Company Limited | Real estate | 1995 |
| 25 Maida Avenue Limited | Professional & scientific | 1984 |
| 25 Manor Park Limited | Professional & scientific | 2007 |
| 25 Marlborough Road Management Company Limited | Households | 2007 |
| 25 Middlemead RTM Company Limited | Households | 2015 |
| 25 Milton Avenue (Highgate) Management Company Limited | Households | 2008 |
| 25 Miranda Road Management Company Limited | Households | 2004 |
| 25 Mitchley Road RTM Company Limited | Households | 2024 |
| 25 Montpelier Road Property Management Limited | Households | 2017 |
| 25 Moorgate Limited | Real estate | 1998 |
| 25 Moray Road RTM Company Limited | Households | 2021 |
| 25 Mount Road Management Ltd | Extraterritorial | 1988 |
| 25 Mycenae Road Limited | Real estate | 2011 |
| 25 Nelmes Way (MV) Ltd | | 2012 |
| 25 New Compton Street Limited | Real estate | 2025 |
| 25 Nominees Limited | Other services | 1992 |
| 25 Oberstein Road Limited | Real estate | 2002 |
| 25 Oxshott Rise Ltd | Construction | 2014 |
| 25 Pattenden Road Freehold Limited | Households | 2020 |
| 25 Pembridge Crescent Limited | Other services | 2004 |
| 25 Percent Limited | Financial services | 2026 |
| 25 Plympton Road Limited | Real estate | 2014 |