| 1 Chandler Court (Grip Holdings) Limited | Romford | 2023 |
| 1 Chantry Road Limited | Bristol | 1984 |
| 1 Chapel Terrace Ltd | Grays | 2025 |
| 1 Charlton Avenue Limited | London | 2024 |
| 1 Chil (F1) Limited | London | 2019 |
| 1 Christchurch Ltd | Canterbury | 2024 |
| 1 Churton Street Limited | London | 2021 |
| 1 Cirencester Road Limited | Manchester | 2012 |
| 1 City Consultancy Limited | Epsom | 2016 |
| 1 City Garden ROW Headlease Limited | London | 2025 |
| 1 Clarence Place Management Co Ltd | Plymouth | 1997 |
| 1 Clearview House Ltd | London | 2025 |
| 1 Click Estate Management Ltd | London | 2021 |
| 1 Click Homes (Sales) Ltd | London | 2013 |
| 1 Click Homes Ltd | London | 2008 |
| 1 Click Move Property Management Limited | Manchester | 2011 |
| 1 Click Properties Limited | London | 2012 |
| 1 Cliff Place Freehold Limited | Bilston | 2024 |
| 1 Cliff Place Limited | Bilston | 2025 |
| 1 Clifton Lawn RTM Company Limited | Great Yarmouth | 2008 |
| 1 Cloudesley Square (Freehold) Limited | Chelmsford | 2023 |
| 1 College Mews Ltd | Reading | 2020 |
| 1 Collingham Road Limited | London | 2018 |
| 1 Commercial Property Limited | London | 2025 |
| 1 Concorde Freehold Limited | London | 2025 |
| 1 Coningsby Drive and 1 Britannia Road Freehold Limited | Brimstage Road | 2024 |
| 1 Corrance Road (Freehold) Limited | London | 2012 |
| 1 CR2 Ltd | Croydon | 2015 |
| 1 Creator Ltd | Rochester | 2021 |
| 1 Crofton Limited | London | 2021 |
| 1 Cromwell Road Limited | Teddington | 2017 |
| 1 Crouch END Hill Ltd | London | 2022 |
| 1 Crown Walk Limited | Croydon | 2017 |
| 1 CT Ltd | Peterborough | 2020 |
| 1 Cupar Road (Freehold) Limited | London | 2013 |
| 1 Daws Close Limited | London | 2025 |
| 1 Dawson Place Limited | | 1984 |
| 1 Denver Road Ltd | Swansea | 2017 |
| 1 Diamond Estate Ltd | Birmingham | 2026 |
| 1 Dickinson House Ltd | Tunbridge Wells | 2024 |
| 1 Ditchling Rise Limited | West Sussex | 2022 |
| 1 Dock Street Limited | Leeds | 2003 |
| 1 Drummond Road Ltd | Wirral | 2024 |
| 1 DSQ Limited | Harrow | 2024 |
| 1 Dynasty Ltd | Edinburgh | 2020 |
| 1 East Hill SW18 Limited | London | 2020 |
| 1 Eighty Abodes Ltd | Watford | 2025 |
| 1 Eldon Place Management Company Limited | Ferndown | 1989 |
| 1 Ellen Ltd | Telford | 2026 |
| 1 Elms Road Limited | Steyning | 2020 |
| 1 Elsworthy Rise Limited | London | 2023 |
| 1 Empire Way Ltd | London | 2018 |
| 1 Englewood Road Management Company Limited | London | 2014 |
| 1 EST (GB) Ltd | Ilford | 2024 |
| 1 Estate Property Ltd | London | 2022 |
| 1 Falmer Developments Ltd | Worthing | 2024 |
| 1 Fentiman Walk Management Company Limited | Hertford | 2012 |
| 1 Filton Avenue Ltd | Bristol | 2015 |
| 1 Five Fields Square Limited | London | 2021 |
| 1 Flaxseed LDN Limited | London | 2019 |
| 1 for YOU 19 for ME Ltd | Doncaster | 2022 |
| 1 Fordingley Road RTM Company Limited | London | 2015 |
| 1 Fore Street Limited | Cornwall | 2024 |
| 1 Freehold Management Company Ltd | Coventry | 2011 |
| 1 Gainsborough Green Management Company Limited | Steventon | 2018 |
| 1 Grange Ltd | London | 2026 |
| 1 Great Bedford Street (Bath) Management Company Limited | Bath | 1988 |
| 1 Greenfields Limited | Sherborne | 2023 |
| 1 Grenadier Gardens Limited | London | 2021 |
| 1 Grimston Avenue Limited | Dover | 2020 |
| 1 Grosvenor Mayfair Limited | London | 2026 |
| 1 Grosvenor Parade Ltd | London | 2026 |
| 1 Handforth Road Limited | | 2001 |
| 1 Harrington Gardens Limited | London | 2026 |
| 1 Hashim Property Services Limited | Banbury | 2022 |
| 1 Hawstead Green Ltd | Croydon | 2021 |
| 1 Hdrd Limited | London | 2015 |
| 1 Hermit Street Ltd | Lincoln | 2009 |
| 1 HG Limited | Hastings | 2025 |
| 1 High Street Launceston Limited | Portsmouth | 2024 |
| 1 High Street Limited | Bristol | 2024 |
| 1 Hillgrove Street Management Company Limited | Bristol | 2019 |
| 1 Hillside Road Limited | Radlett | 2010 |
| 1 Hollybush Terrace Limited | London | 2013 |
| 1 Holmewood Gardens Management Company Limited | London | 2005 |
| 1 Howitt Road Management Company Limited | London | 2002 |
| 1 HQ Private Members Club Limited | Bury St. Edmunds | 2026 |
| 1 HSB Limited | Letchworth Garden City | 2025 |
| 1 Hurst Road Limited | Godstone | 2009 |
| 1 HWL Ltd | London | 2024 |
| 1 Inverness Gardens Management Limited | | 1982 |
| 1 IP MAN Co Limited | Matlock | 2021 |
| 1 IP Management Limited | Matlock | 2021 |
| 1 J Homes Limited | Gloucester | 2025 |
| 1 Jacksons Lane Freehold Limited | London | 2018 |
| 1 Kelross Road Limited | London | 2010 |
| 1 Kings Road Godalming (Management) Limited | Guildford | 2005 |
| 1 Kingsdown Parade Management Company Ltd | Bristol | 2018 |
| 1 Kingsway (Management Company) Limited | Manchester | 2004 |
| 1 Knockvale Park Management Limited | Belfast | 2013 |