| 10 Fontenoy Road (Management Company) Limited | Households | 2020 |
| 10 FOX Lane RTM Company Ltd | Households | 2014 |
| 10 Foxmore Street Freehold Ltd | Households | 2023 |
| 10 Georgia Road Ltd | Real estate | 2023 |
| 10 Gilbert Place RTM Company Limited | Households | 2007 |
| 10 Gipsy Hill Ltd | Households | 2025 |
| 10 Gledhow Gardens Limited | Households | 1987 |
| 10 Golders Green Crescent Limited | Real estate | 2015 |
| 10 Goldhurst Terrace Limited | Households | 2025 |
| 10 Great Ormond Street Limited | Households | 2013 |
| 10 Greenaway Gardens Ltd | Households | 2000 |
| 10 Gresham Street LLP | | 2010 |
| 10 Griffiths Road Freehold Limited | Households | 2009 |
| 10 Group Holdco Limited | Administrative & support | 2014 |
| 10 Group Limited | Administrative & support | 2009 |
| 10 Grove Road Limited | Real estate | 2023 |
| 10 Gunter Grove Freehold Limited | Real estate | 2012 |
| 10 Gwendwr Road Residents Limited | Households | 2024 |
| 10 Halesworth Road Limited | Households | 2001 |
| 10 Hamilton Road Management Limited | Households | 2022 |
| 10 Harvist Road Limited | Real estate | 2023 |
| 10 Hazelmere Road Management Limited | Households | 2001 |
| 10 HG Management Limited | Households | 1985 |
| 10 High View Road Freehold Company Ltd | Real estate | 2025 |
| 10 Highcroft Road Ltd | Real estate | 2023 |
| 10 Highland Road Limited | Households | 2025 |
| 10 Hillmarton Road Management Limited | Real estate | 2000 |
| 10 Hilltop Road Limited | Real estate | 1998 |
| 10 Hopgood Street Residents Association Limited | Households | 2006 |
| 10 Hoyle Limited | Real estate | 2024 |
| 10 Hungerford Road RTM Limited | Real estate | 2006 |
| 10 Investments Limited | Financial services | 2023 |
| 10 Iverson Road (Freehold) Limited | Households | 2016 |
| 10 Jarvis RD Ltd | Real estate | 2025 |
| 10 K1NGSFIELD RTM Company Limited | Households | 2016 |
| 10 Kelvedon Road Ltd | Real estate | 2021 |
| 10 Kidbrooke Grove Residents Company Limited | Households | 2006 |
| 10 Kidderpore Gardens Ltd | Households | 2022 |
| 10 Kildare Gardens (Freehold) Limited | Real estate | 2015 |
| 10 Kinds of People Ltd | Information & communication | 2011 |
| 10 Kingswood Road Limited | Households | 1999 |
| 10 Kirkstall Road (Management) Limited | Households | 1994 |
| 10 Ladbroke Gardens London W11 Residents Association Limited | Households | 1993 |
| 10 Lanark Road Limited | Households | 1994 |
| 10 Lancaster Drive Management Limited | Households | 1998 |
| 10 Lancaster Road Limited | Households | 2014 |
| 10 Lancelot Place Management Company Limited | Households | 2006 |
| 10 Leake Street Ltd | Administrative & support | 2012 |
| 10 LEE Terrace Limited | Households | 1999 |
| 10 Lennox Gardens Limited | Households | 2006 |
| 10 Lewisham Road Limited | Households | 1989 |
| 10 Lindfield Gardens Management Limited | Other services | 1996 |
| 10 Lindore Road Limited | Extraterritorial | 2014 |
| 10 Lives Studios Ltd | Information & communication | 2025 |
| 10 London Street Apartments Limited | Real estate | 2024 |
| 10 Long Acre Ltd | Hospitality | 2021 |
| 10 Lunham Road RTM Company Limited | Households | 2012 |
| 10 Lyndhurst Gardens Freehold Limited | Households | 1997 |
| 10 M Healthcare Limited | Health & social care | 2024 |
| 10 Madeley Road Residents Company Limited | Households | 1997 |
| 10 Magnolia Touring LLP | | 2021 |
| 10 Manchuria Road, London SW11 6AE Limited | Households | 2004 |
| 10 March Limited | Construction | 2026 |
| 10 Market Place Limited | Real estate | 2011 |
| 10 Marylands Road Freehold Limited | Households | 2023 |
| 10 Mazenod Avenue Freehold Limited | Professional & scientific | 2006 |
| 10 Millennium Drive RTM Company Limited | Households | 2024 |
| 10 Millfield Lane Service Company Limited (the) | Households | 1972 |
| 10 Million Women Ltd | Wholesale & retail | 2020 |
| 10 Milton Avenue Limited | Households | 2008 |
| 10 Minute Ventures Limited | Information & communication | 2014 |
| 10 Moncorvo Close Limited | Real estate | 2022 |
| 10 Moreton Place Ltd | Administrative & support | 2006 |
| 10 Moreton Terrace (Freehold) Limited | Households | 2013 |
| 10 Morrish Road RTM Company Limited | Households | 2020 |
| 10 Motives Limited | Manufacturing | 2012 |
| 10 Mountgrove Road Limited | Households | 2013 |
| 10 Mowbray Road Residents Management Company Limited | Households | 1986 |
| 10 New ROW Ltd | Real estate | 2026 |
| 10 Northfield Road Ltd | Real estate | 2020 |
| 10 OBS LLP | | 2013 |
| 10 on Mortiscape Ltd | Professional & scientific | 2025 |
| 10 Ongar Road Property Services Limited | Real estate | 1996 |
| 10 Ormeley Road Management Company Limited | Real estate | 2007 |
| 10 OUT of 10 Group Ltd | Wholesale & retail | 2023 |
| 10 Palace Gate Limited | Households | 1993 |
| 10 Park Avenue Freehold Limited | Extraterritorial | 2005 |
| 10 Park Hall Management Company Limited | Hospitality | 1989 |
| 10 Pembridge Crescent Limited | Real estate | 2023 |
| 10 Pembridge Road LLP | | 2012 |
| 10 Percent Better Ltd | Education | 2025 |
| 10 Percent Supplements Ltd | Manufacturing | 2025 |
| 10 Percy Circus Limited | Households | 2005 |
| 10 Point Design Limited | Professional & scientific | 2006 |
| 10 Porchester Square Ltd | Real estate | 2023 |
| 10 Power 9 Ltd | Financial services | 2016 |
| 10 Pratt Walk Limited | Households | 2026 |
| 10 Property Ltd | Real estate | 2006 |
| 10 QG (Freehold) Limited | Households | 2014 |
| 10 Queen's Gardens Management Limited | Households | 1989 |