| 400 & 402 Fulham Palace RD Management Company Limited | Wimbledon | 2022 |
| 400 Longwater (UK) Limited | London | 2019 |
| 400 Thumbs UP Ltd | Kidderminster | 2025 |
| 400 Wilbraham Road Management Limited | Manchester | 2007 |
| 400M Ltd | Lutterworth | 2021 |
| 401 Chapter Road Limited | Bradford | 2022 |
| 401 King Street Limited | London | 2018 |
| 402 Seven Sisters Road Limited | London | 2017 |
| 402 Southbury Ltd | London | 2022 |
| 402 Strand Limited | | 2002 |
| 402-404 Holdenhurst Road Ltd | Bournemouth | 2026 |
| 403 Group of Companies Ltd | Dudley | 2024 |
| 403 Harrow Road Ltd | London | 1998 |
| 403 Nether Street Limited | Daventry | 2022 |
| 404 Capital Ltd | London | 2025 |
| 404 Centre Ltd | Wembley | 2024 |
| 404 Whitehall Road Ltd | Bristol | 2019 |
| 404 Wilbraham Road Limited | Hyde | 2025 |
| 405 Leicester Limited | Ruislip | 2021 |
| 406 Avenue Limited | Hayes | 2025 |
| 406 Consultancy Company Limited | London | 2025 |
| 406 Investments Limited | Saffron Walden | 2022 |
| 407 Developments Ltd | Cockfosters | 2026 |
| 409 Ltd | Carshalton | 2021 |
| 409 Westborough Ltd | Westcliff-On-Sea | 2020 |
| 409 Whalebone Lane North Management Company Limited | Woodford Green | 2015 |
| 40A One West Point Limited | Stanmore | 2022 |
| 40BURGETTRD Ltd | Iver | 2022 |
| 40GFL Properties Ltd | London | 2025 |
| 40HFL Limited | Solihull | 2021 |
| 40HHR Limited | London | 2021 |
| 40L Properties Ltd | London | 2025 |
| 40MP (Penzance) Ltd | Hungerford | 2023 |
| 41 Abbey Road Limited | Cambridge | 2011 |
| 41 Alexandra Road Ltd | Bournemouth | 2023 |
| 41 and 41A Midmoor Road Limited | London | 2001 |
| 41 and 43 Charlmont Road (Freehold) Company Limited | London | 2007 |
| 41 Bedford Road (ST. Ives) Limited | St. Ives | 2000 |
| 41 Brunswick Square Freehold Company Limited | Hove | 2025 |
| 41 Buckingham Road Management Company Limited | London | 1983 |
| 41 Cambridge Road Limited | Bromley | 2015 |
| 41 Compayne Gardens Freehold Company Limited | | 1998 |
| 41 Connaught Avenue Management Company Limited | Plymouth | 2002 |
| 41 Consfield Avenue Ltd | Edenbridge | 2016 |
| 41 Consort House Ltd | London | 2022 |
| 41 Cornwall Gardens (Cliftonville) Management Company Limited | Margate | 1989 |
| 41 Cottingham Road Limited | Hull | 2023 |
| 41 Crnet Ltd | Harpenden | 2022 |
| 41 Danbury Street Limited | London | 2000 |
| 41 Dawes Road Limited | London | 2017 |
| 41 Down Road Ltd | Epsom | 2019 |
| 41 Downham Road Limited | Liverpool | 2025 |
| 41 Eastfields Road Ltd | London | 2021 |
| 41 Effingham Road Limited | Surbiton | 2010 |
| 41 Epsom Road Management Limited | London | 2020 |
| 41 Estates Limited | London | 2025 |
| 41 Fairfield Ltd | London | 2022 |
| 41 Foxley Management Limited | Purley | 2025 |
| 41 Friendly Limited | Rainham | 2023 |
| 41 Gateley Road RTM Company Limited | London | 2011 |
| 41 Georges Ltd | London | 2026 |
| 41 Gladstone Road Management Company Limited | Melton Mowbray | 1985 |
| 41 Graham Road Ltd | London | 2022 |
| 41 Great Russell Street Ltd | London | 2025 |
| 41 GRS Commerical Ltd | London | 2025 |
| 41 GRS Ltd | London | 2025 |
| 41 Gwendwr Road Limited | London | 2017 |
| 41 Hainault Road Limited | Essex | 2015 |
| 41 Harold Road Cliftonville Kent RTM Company Limited | Canterbury | 2004 |
| 41 Hayter Road Freehold Ltd | Milton Keynes | 2013 |
| 41 High Street Hull Limited | Warrington | 2020 |
| 41 Hill Brow Ltd | Hove | 2022 |
| 41 Holland Road Management Limited | Stanmore | 2022 |
| 41 Hopton Road Limited | London | 2006 |
| 41 Investments Cube Apts Ltd | London | 2026 |
| 41 Investments Limited | London | 2013 |
| 41 JH Ltd | Harlow | 2024 |
| 41 Kellett Road Limited | London | 2003 |
| 41 Kempshott Road (Freehold) Company Limited | London | 2008 |
| 41 Kenilworth Road Limited | Croydon | 2024 |
| 41 Kingston Road (Management) Limited | London | 2019 |
| 41 Kington Ltd | Hereford | 2021 |
| 41 Lonsdale Road Limited | Camberley | 2015 |
| 41 Lovell Limited | Cirencester | 2021 |
| 41 Lowndes Street Limited | London | 2008 |
| 41 Lynton Management Limited | London | 1985 |
| 41 Marina Freehold Limited | St. Leonards-On-Sea | 2019 |
| 41 Mill Way Limited | Wilden | 2016 |
| 41 Milton Street Management Company Limited | Saltburn-By-The-Sea | 2011 |
| 41 Moor Street Gloucester Management Company Limited | Gloucester | 2012 |
| 41 Morton Road (London) RTM Company Limited | Bromley | 2024 |
| 41 Mount Park Road Limited | | 2000 |
| 41 Mysore Road Ltd | London | 2019 |
| 41 Nevill Road Ltd | West Wickham | 2025 |
| 41 NG Limited | Watford | 1999 |
| 41 Nightingale Management Limited | Southsea | 2016 |
| 41 Nroad Ltd | Sale | 2022 |
| 41 Oval Road Croydon Limited | Romford | 2018 |
| 41 Oxford Road (Ealing) Limited | London | 2013 |
| 41 Properties Ltd | London | 2025 |