| Cornerside Residents Association Limited | Croydon | 1982 |
| Cornerstone (Bridgend) Limited | Bridgend | 1986 |
| Cornerstone (Selby) Management Company Limited | London | 2005 |
| Cornerstone Apartments RTM Company Limited | Ticehurst | 2026 |
| Cornerstone Association Limited | London | 2025 |
| Cornerstone Carrick Ltd | Larne | 2024 |
| Cornerstone Court Management Company Limited | Torpoint | 2019 |
| Cornerstone Investment Property Limited | London | 2025 |
| Cornerstone London Property Ltd | Slough | 2025 |
| Cornerstone Management Group Ltd | Bromley | 2025 |
| Cornerstone Mews Management Limited | Wylam | 2006 |
| Cornerstone Office Solutions Ltd | Crawley | 2008 |
| Cornerstone Plumbing Ltd | Portsmouth | 2026 |
| Cornerstone Property File Limited | Eastbourne | 2025 |
| Cornerstone UK Properties Limited | Birmingham | 2019 |
| Cornerstones (Cheltenham) Management Company Limited | Cheltenham | 1986 |
| Cornerstones Freehold Limited | Liversedge | 2025 |
| Cornerways (Littlehampton) Resident's Association Limited | Littlehampton | 1970 |
| Cornerways Flat Management Company Limited | New Milton | 1985 |
| Cornerways Freehold Limited | London | 2022 |
| Cornerways Limited | Hindhead | 1996 |
| Cornerways Management (Wembley) Limited | Harrow | 1970 |
| Cornerways Management Company (Solihull Lodge) Limited | Birmingham | 2005 |
| Cornerways Property Ltd | Weybridge | 2002 |
| Cornerways Residents' Association Limited | London | 1967 |
| Cornfield Drive Owners Limited | Lichfield | 2020 |
| Cornfield Meadows Management Company Limited | Shrewsbury | 2019 |
| Cornfields (Lakenheath) Residents Management Company Limited | Colchester | 2025 |
| Cornford Crescent Management Company Ltd | Polegate | 2016 |
| Corngreaves Hall Building Management Limited | Cradley Heath | 2011 |
| Corngreaves Hall Management Company Limited | Cradley Heath | 2011 |
| Cornhill Gardens (Cannock) Management Company Limited | Swadlincote | 2025 |
| Cornhill Residents Association Limited | Hertfordshire | 2003 |
| Cornhill Works Ltd | Liverpool | 2025 |
| Cornish Chough Development Residents Association Limited | Newquay | 2025 |
| Cornish Close Management Limited | Taunton | 2024 |
| Cornish Hall Management Company Limited | Manchester | 2017 |
| Cornish Place Freehold Ltd | Sheffield | 2019 |
| Cornish Place Residents Company Limited | Altrincham | 1999 |
| Cornmarket Management Company Ltd | Lancaster | 2021 |
| Cornmill Close Management Ltd | Ilfracombe | 2005 |
| Cornmill Consortium Limited | Burton-On-Trent | 1996 |
| Cornmill House RTM Company Limited | Wigan | 2026 |
| Cornmill Management Limited | Keighley | 1991 |
| Cornmill Manor Management Company Ltd | Ballymena | 2023 |
| Cornmill Mews Management Company Limited | Leighton Buzzard | 2016 |
| Cornmill Residents Association Limited | Worcester | 2007 |
| Cornmill Square Management Company Limited | Shrewsbury | 2002 |
| Cornsland Limited | Billericay | 1996 |
| Cornwalk Limited | | 1988 |
| Cornwall and Garden House Limited | Andover | 1980 |
| Cornwall AVE Service Management Company Limited | Birmingham | 2022 |
| Cornwall Court (Uxbridge) Limited | Uxbridge | 2005 |
| Cornwall Court Estates Limited | London | 2016 |
| Cornwall Court Management Company Limited | Woodford Green | 1985 |
| Cornwall Court RTM Company Limited | Harrow | 2016 |
| Cornwall Gardens (NO 21) Residents Company Limited | London | 1997 |
| Cornwall Gardens(Littlehampton)Management Company Limited | Littlehampton | 1969 |
| Cornwall House Brighton Limited | Brighton | 2003 |
| Cornwall House Freehold Limited | Ealing | 2012 |
| Cornwall House Management & Maintenance Company Limited | Cornwall | 2000 |
| Cornwall House RMC Limited | Aylesbury | 2017 |
| Cornwall Investment Properties Ltd | Warwick | 2017 |
| Cornwall Mansions Limited | Stevenage | 2002 |
| Cornwall Properties U K Ltd | Brighton | 2025 |
| Cornwall Road Management (Uxbridge) Limited | Uxbridge | 1989 |
| Cornwall Street Storage Limited | Manchester | 2023 |
| Cornwall Works Management Limited | Sheffield | 2005 |
| Cornwallis Court Management Company Limited | Liverpool | 2003 |
| Cornwallis Crescent Management Committee Limited | Bristol | 1981 |
| Cornwallis Flats Limited | New Milton | 1961 |
| Cornwallis House Management Company Limited | Bristol | 1984 |
| Cornwallis Road Management Limited | Maidstone | 2004 |
| Cornwallis Villa Limited | Hastings | 2014 |
| Cornwell and Samson Close Freeholders Limited | Portsmouth | 2005 |
| Cornwell House Residents Association Limited | Kew Richmond | 1988 |
| Corolanty Management Company Limited | Bournemouth | 1985 |
| Coromandel Heights Maintenance Company Limited | Bristol | 1983 |
| Coronation Avenue (Management) Company Limited | East Tilbury | 1992 |
| Coronation Court (Newmarket) Limited | Saffron Walden | 2001 |
| Coronation Court Management Company Limited | Croydon | 2016 |
| Coronation Court RTM Company Ltd | Wickford | 2020 |
| Coronation Flats RTM Company Limited | London | 2023 |
| Coronation House Portsmouth Limited | Southsea | 2005 |
| Coronation Management Ltd | Bristol | 2006 |
| Coronation Mews Management Company Limited | Leighton Buzzard | 2003 |
| Coronation Residential Management Company Limited | Cheltenham | 2018 |
| Coronation Road Property Management Limited | Bridgwater | 2018 |
| Coronation Square Residents Management Company Limited | London | 2022 |
| Coronation Walk Management Company Limited | Walsall | 2011 |
| Coronation Way Management Company Limited | Taunton | 2024 |
| Coronet Management Limited | London | 1981 |
| Coros Properties Ltd | London | 2023 |
| Coroscoba Limited | Stanmore | 2018 |
| Corporate Home Away (South) Limited | Worthing | 2018 |
| Corporate Management AUL Service Ltd | Ashton-Under-Lyne | 2019 |
| Corporation Quay Management Company Limited | South Shields | 1995 |
| Corradova Properties Limited | Walsall | 1988 |
| Corral Grove Residents Management Company Limited | Doncaster | 2026 |
| Corran (ST Andrews) Ltd | Edinburgh | 2021 |