| 25 Poets Road Limited | Arts & recreation | 2019 |
| 25 Porchester Place & Coniston Court RTM Company Ltd | Households | 2025 |
| 25 Post House Ltd | Information & communication | 2025 |
| 25 Prah Road Management Company Limited | Real estate | 2001 |
| 25 Primrose Road (Freehold) Limited | Households | 2020 |
| 25 Queen's Gardens Limited | Households | 1986 |
| 25 Queens Gate Gardens Tenants Management Company Limited | Real estate | 1971 |
| 25 Queens Gate SW7 Management Limited | Households | 1998 |
| 25 Queensgate Gardens Freehold Limited | Extraterritorial | 2006 |
| 25 Randolph Crescent Limited | Households | 1985 |
| 25 Ranelagh Road | Real estate | 2011 |
| 25 Redcliffe Square Freehold Company Limited | Households | 2018 |
| 25 Rent Ltd | Administrative & support | 2022 |
| 25 Repair Centre Limited | Manufacturing | 2007 |
| 25 Rossiter Road Management Limited | Households | 2008 |
| 25 Russell Road RTM Company Limited | Households | 2024 |
| 25 Seafield Road Limited | Households | 2015 |
| 25 Sedlescombe Road Limited | Hospitality | 2008 |
| 25 Seven Investments Limited | Information & communication | 2025 |
| 25 Seven Properties Ltd | Real estate | 2021 |
| 25 Shepherd Market Ltd | Real estate | 2021 |
| 25 Shepherds Hill Limited | Households | 2001 |
| 25 Solutions Ltd | Professional & scientific | 2025 |
| 25 ST James's Place Freehold Limited | Households | 2017 |
| 25 Steeles Road Residents Limited | Households | 2002 |
| 25 Strathville Road Limited | Households | 2003 |
| 25 Sutherland Avenue Freehold Limited | Real estate | 2006 |
| 25 Sydenham Park Freehold Ltd | Real estate | 2015 |
| 25 the Bishops Avenue Limited | Real estate | 2022 |
| 25 the Grange Freehold Limited | Extraterritorial | 2022 |
| 25 Thicket Road Limited | Real estate | 1995 |
| 25 Thornlaw Road Limited | Households | 2019 |
| 25 Trentham Street (Freehold) Ltd | Real estate | 2020 |
| 25 Trewsbury Road Management Company Limited | Households | 2007 |
| 25 Upper Addison Gardens Limited | Households | 2014 |
| 25 Upper Park Road (Freehold) Limited | Households | 2006 |
| 25 Upper Wimpole ST Ltd | Health & social care | 2018 |
| 25 Vincent Road Ltd | Construction | 2025 |
| 25 Waldemar Avenue Management Company Limited | Households | 2006 |
| 25 Walpole Street (Freehold) Limited | Households | 2023 |
| 25 West END Ltd | Real estate | 2022 |
| 25 West Limited | Real estate | 2025 |
| 25 Westgate Terrace Limited | Extraterritorial | 2012 |
| 25 Westmoreland Limited | Real estate | 2023 |
| 25 Whitehall Management Limited | Households | 1999 |
| 25 Willingham Ltd | Real estate | 2020 |
| 25 Wilmington Square (Management) Limited | Real estate | 1994 |
| 25 Wilton Street Limited | Real estate | 2019 |
| 25 Winfrith Road Limited | Households | 2017 |
| 25 Winterwell Road Limited | Real estate | 2016 |
| 25 WT Limited | Households | 2009 |
| 25 WTR Management Company Limited | Households | 2006 |
| 25 X 25 Limited | Other services | 2021 |
| 25, 26 and 27 Smith Street Freehold Limited | Households | 2014 |
| 25-26 Dering Street Property Limited | Real estate | 2014 |
| 25-26 Redington Gardens LLP | | 2015 |
| 25-27 Evelyn Gardens Limited | Households | 2003 |
| 25-27 North ROW Limited | Real estate | 2024 |
| 25-27 Onslow Square RTM Company Limited | Households | 2008 |
| 25-28 Edgeworth Close Management Company Ltd | Real estate | 2013 |
| 25-28 Limited | Professional & scientific | 2016 |
| 25-28 Marcus Street Management Limited | Households | 2015 |
| 25-28 Old Burlington Street (NO.1) Limited | Real estate | 2001 |
| 25-29 Henrietta Street Residents Limited | Households | 1994 |
| 25-36 Bardsley Close (Freehold) Limited | Households | 1999 |
| 25-41 Henrietta Chase Management Limited | Professional & scientific | 2005 |
| 25.II.25 Limited | Wholesale & retail | 2025 |
| 25/27 Byrne Road Freehold Limited | Households | 2012 |
| 25/27 Catherine Place (Management) Limited | Real estate | 1999 |
| 25/27 Courtfield Road Management Company Limited | Households | 1983 |
| 25/27 Elmore Street Management Limited | Households | 2005 |
| 25/27 Milner Street Freehold Limited | Households | 2006 |
| 25/27/29 Egerton Gardens Limited | Administrative & support | 2010 |
| 25/28 Model Farm Close Limited | Real estate | 2002 |
| 25/28 North Audley Street Management Limited | Real estate | 1987 |
| 25/31 Adamson Road Limited | Households | 1984 |
| 25/33 Inverness Terrace W2 Management Limited | Households | 1987 |
| 25/7 Films Ltd | Extraterritorial | 2008 |
| 250 & 252 Church Lane Limited | Real estate | 2023 |
| 250 Haydons Road Management Company Limited | Households | 1994 |
| 250 King's Road and 151 Sydney Street Trading Limited | Professional & scientific | 2016 |
| 250 Limited | Financial services | 2017 |
| 250 Regents Park Ltd | Real estate | 2025 |
| 250 Willesden Lane Ltd | Hospitality | 2017 |
| 251 a Markouse Road Limited | Real estate | 2022 |
| 251 Markhouse Road Ltd | Real estate | 2019 |
| 251 Paradise ROW Ltd | Administrative & support | 2013 |
| 251 Southcroft Ltd | Real estate | 2022 |
| 251 Southwark Limited | Real estate | 2018 |
| 252 Camden Road Limited | Households | 1995 |
| 252 Collective Ltd | Professional & scientific | 2025 |
| 252 Grays Inn Road Limited | Real estate | 1998 |
| 252 Limited | Real estate | 2024 |
| 252 Web Ltd | Information & communication | 2024 |
| 2525 Estate Agents Limited | Real estate | 2025 |
| 2525 Limited | Professional & scientific | 2013 |
| 2527 Management Limited | Real estate | 2024 |
| 252GROUP Ltd | Information & communication | 2020 |
| 253 Camberwell New Road Limited | Households | 2007 |
| 253 CHR Freehold Limited | Real estate | 2026 |