| 17 Eastdown Park RTM Ltd | Households | 2013 |
| 17 Elmwood Road Freehold Ltd | Households | 2007 |
| 17 Energy Limited | Professional & scientific | 2023 |
| 17 Enmore Road Limited | Households | 2002 |
| 17 Evangelist Road Limited | Real estate | 2001 |
| 17 Farleigh Road Flat Owners Limited | Households | 2017 |
| 17 Fawcett Street Limited | Real estate | 2013 |
| 17 FC Ltd | Real estate | 2022 |
| 17 Finborough Road Management Limited | Households | 1998 |
| 17 Finsbury Park Road Limited | Households | 1994 |
| 17 Fitzroy Street Management Company Limited | Households | 2016 |
| 17 Foulser Road Freehold Limited | Households | 2017 |
| 17 Fourth Avenue Ltd | Real estate | 2025 |
| 17 Garrett Street Limited | Households | 2017 |
| 17 Gathorne Road Limited | Households | 2013 |
| 17 Gloucester Drive Flat Owners Limited | Households | 1998 |
| 17 Gloucester Street London Freehold Limited | Households | 2006 |
| 17 Gordon Place Limited | Households | 2006 |
| 17 Gowlett Road London Management Limited | Extraterritorial | 2000 |
| 17 Grams Coffee Roasters Limited | Hospitality | 2024 |
| 17 Great North Way Limited | Households | 2020 |
| 17 Grittleton Road Limited | Extraterritorial | 1998 |
| 17 Grosvenor Avenue Limited | Real estate | 2025 |
| 17 Grosvenor Road Management Ltd | Real estate | 2016 |
| 17 Gunter Grove (Freehold) Limited | Households | 2000 |
| 17 Half Acre Road Limited | Administrative & support | 2011 |
| 17 Hamlet Road RTM Company Limited | Households | 2026 |
| 17 Hampstead Lane Limited | Households | 1994 |
| 17 Harold Road Dwellings Limited | Households | 2004 |
| 17 Hatton Place (Freehold) Limited | Households | 2013 |
| 17 Herbert Gardens Limited | Real estate | 2021 |
| 17 Hercules Freeholding Company Limited | Households | 2024 |
| 17 Hercules Street RTM Company Limited | Other services | 2017 |
| 17 Highgate Hill Limited | Real estate | 2018 |
| 17 Holding Group Ltd | Financial services | 2025 |
| 17 Holmbrook Drive Management Limited | Households | 2002 |
| 17 Holmdale Road RTM Company Limited | Real estate | 2008 |
| 17 Honor Oak Park Limited | Real estate | 2008 |
| 17 Hormead Road Limited | Real estate | 2006 |
| 17 Huntingdon Street (Freehold) Limited | Households | 2012 |
| 17 Ickburgh Limited | Real estate | 2018 |
| 17 Inner Park Road Limited | Households | 1991 |
| 17 Josephine Avenue Limited | Hospitality | 2010 |
| 17 Kemps House Ltd | Construction | 2017 |
| 17 King Henry's Road Residents Limited | Real estate | 2000 |
| 17 Kingdon Road (Freehold) Company Limited | Professional & scientific | 2009 |
| 17 Knatchbull Road Freehold Management Limited | Real estate | 2020 |
| 17 KPG Ltd | Administrative & support | 2020 |
| 17 Labs Ltd | Manufacturing | 2026 |
| 17 Lancaster Grove Flat Management Limited | Households | 2003 |
| 17 Landgate Limited | Hospitality | 2020 |
| 17 Lanhill Road (Freehold) Company Limited | Households | 2025 |
| 17 Lanhill Road RTM Company Limited | Households | 2022 |
| 17 Lansdowne Place Freehold Limited | Households | 2016 |
| 17 Lealand Ltd | Real estate | 2023 |
| 17 Lexham Gardens Limited | Households | 1997 |
| 17 Limes Grove Ltd | Households | 2012 |
| 17 Lithos Road RTM Company Ltd | Real estate | 2011 |
| 17 Little Boltons Freehold Limited | Households | 2022 |
| 17 London Lane Limited | Households | 2025 |
| 17 Lowndes Square Property Management Company Limited | Households | 1992 |
| 17 Lucky Duck Studios Ltd | Information & communication | 2025 |
| 17 Lydford Management Limited | Households | 2001 |
| 17 Lyme Street Management Limited | Households | 2016 |
| 17 Lynton Road Management Company Limited | Households | 1988 |
| 17 Mabley Street Limited | Households | 2023 |
| 17 Malcolm Road Limited | Construction | 2014 |
| 17 Management Ltd | Arts & recreation | 2025 |
| 17 Manchester Street (London) Right to Manage Company Ltd | Real estate | 2025 |
| 17 Marriott Road RTM Company Limited | Households | 2008 |
| 17 Moreton Road Limited | Households | 2023 |
| 17 Mornington Avenue Limited | Households | 2004 |
| 17 Mount Park Road Limited | Households | 2008 |
| 17 Mountfield Road Management RTM Company Limited | Households | 2017 |
| 17 Navarino Road Limited | Real estate | 2010 |
| 17 Nevern Square Limited | Households | 2005 |
| 17 North Common Road (W5) Limited | Real estate | 2007 |
| 17 Onslow Gardens Limited | Households | 1989 |
| 17 Opera Arcade Ltd. | Hospitality | 2017 |
| 17 Orlando Road Manco Limited | Real estate | 2021 |
| 17 Ospringe Road Management Company Limited | Households | 2013 |
| 17 Palace Court Limited | Households | 1982 |
| 17 Park Road Tunbridge Wells Limited | Real estate | 2002 |
| 17 Park Square East Ltd | Construction | 2019 |
| 17 Pembridge Crescent (Freehold) Limited | Real estate | 2019 |
| 17 Pembridge Square Freehold Limited | Households | 2022 |
| 17 Peterborough Road Management Limited | Households | 2008 |
| 17 Pimlico Road (Management) Limited | Households | 1988 |
| 17 Powd Limited | Households | 2021 |
| 17 Priory Road Management Company Limited | Real estate | 2018 |
| 17 Priory Terrace Freehold Limited | Households | 2024 |
| 17 QC (MV) Ltd | Real estate | 2012 |
| 17 Quay Limited | Real estate | 2021 |
| 17 Quay UK Holdings Limited | Real estate | 2021 |
| 17 Queen's Gardens Management Limited | Real estate | 1989 |
| 17 Queensborough Terrace Management Limited | Households | 1983 |
| 17 Ramsden Road Management Company Limited | Extraterritorial | 2006 |
| 17 Rastell Avenue Limited | Real estate | 2003 |
| 17 Redcliffe Gardens RTM Company Limited | Households | 2008 |
| 17 Redcliffe Street Management Limited | Households | 1996 |