| Clifton Amenity Management Company Limited | Preston | 1996 |
| Clifton Apartments Limited | Stockport | 2004 |
| Clifton Associates Residents Limited | | 1995 |
| Clifton Close (Bicester) Management Company Limited | Bourne End | 2018 |
| Clifton Close (Swanage) Limited | Swanage | 1977 |
| Clifton Close Management Company Limited | Chard | 1982 |
| Clifton Court (Avenue) Management Company Limited | Shrewsbury | 2003 |
| Clifton Court (Blackpool) Management Company Limited | Blackpool | 2007 |
| Clifton Court (Eastbourne) Limited | Eastbourne | 2008 |
| Clifton Court (Freehold) Limited | Croydon | 2005 |
| Clifton Court (Ludlow) Limited | Manchester | 2019 |
| Clifton Court (Maintenance) Limited | Lytham St. Annes | 1966 |
| Clifton Court (Poole) Limited | Chichester | 1987 |
| Clifton Court (Southbourne) Limited | New Milton | 1998 |
| Clifton Court Amenity Limited | Plymouth | 2001 |
| Clifton Court Facility Management Limited | Dronfield | 2021 |
| Clifton Court Management (Southampton) Limited | Southampton | 1998 |
| Clifton Court Management Company Limited | London | 1981 |
| Clifton Court Property Management Company Limited | Blackpool | 1992 |
| Clifton Court Residents Limited | London | 1988 |
| Clifton Court RTM Company Ltd | Hailsham | 2023 |
| Clifton Crescent (25) RTM Company Limited | Folkestone | 2005 |
| Clifton Down House Limited | Croydon | 2016 |
| Clifton Down Mansions Limited | Bristol | 1963 |
| Clifton Drive Management (Lytham ST. Annes) Limited | Blackpool | 1979 |
| Clifton Elmdale Xxi/Xxii Limited | Bristol | 2025 |
| Clifton Flats Limited | Swanage | 2016 |
| Clifton Garden Residents' Association Limited | Croydon | 1971 |
| Clifton Gardens Residents Association | Truro | 2023 |
| Clifton Gate Management Company Limited | Moreton | 2003 |
| Clifton Hall Management Co Ltd | Nottingham | 2010 |
| Clifton Heights (Isleworth) Management Company Limited | Blackburn | 2017 |
| Clifton Heights Management Company (Holsworthy) Limited | Barnstaple | 2011 |
| Clifton Heights Management Company Limited | Christchurch | 1999 |
| Clifton Hill Management Limited | Carlisle | 2013 |
| Clifton House (Folkestone) Limited | Folkestone | 2007 |
| Clifton House (Freehold) Ltd | Orpington | 2021 |
| Clifton House (Northwood) Management Company Limited | Northwood | 2021 |
| Clifton House (Teignmouth) Management Limited | Teignmouth | 1991 |
| Clifton House Church Street Management Co Ltd | Old Hatfield | 2023 |
| Clifton House Company Limited | Epsom | 1981 |
| Clifton House Estate Limited | Coulsdon | 2017 |
| Clifton House Flats (Harrogate) Management Co. Limited | Harrogate | 1976 |
| Clifton House Management Company Limited | | 1994 |
| Clifton House Property Management Ltd | Lytham St. Annes | 2011 |
| Clifton House Residents Company Limited | Ilfracombe | 2005 |
| Clifton Lodge (Leamington Spa) Management Ltd | Leamington Spa | 2024 |
| Clifton Lodge (Winchester) Management Co. Limited | Upham | 1981 |
| Clifton Lodge Bournemouth Limited | Poole | 1989 |
| Clifton Lodge Limited | Blackpool | 1971 |
| Clifton Lodge Management Co Ltd | Taunton | 2002 |
| Clifton Lodge Residents Association Limited | Brighton | 2008 |
| Clifton Lodge Residents Management Limited | Fareham | 1988 |
| Clifton Management Company Limited | London | 1988 |
| Clifton Meadows Management Company Ltd | Bristol | 2020 |
| Clifton Mews Estate (Management) Limited | Worthing | 1985 |
| Clifton Mews Management Company Limited | Rotherham | 1997 |
| Clifton Park Lodge Residents Association Limited | Bristol | 1985 |
| Clifton Place Management Limited | Gloucester | 1990 |
| Clifton Property Management Limited | London | 2017 |
| Clifton Road (BEN Rhydding) Limited | Ilkley | 2015 |
| Clifton Road (Llandudno) Management Company Limited | Llandudno | 2019 |
| Clifton Road Southbourne Limited | Bournemouth | 2001 |
| Clifton Square (Burnley) Management Company Limited | Preston | 2008 |
| Clifton Street Lytham SC Ltd | Preston | 2025 |
| Clifton Street Management Company Ltd | Dudley | 2021 |
| Clifton Street Plymouth Management Limited | New Milton | 1987 |
| Clifton Terrace Castlerock Management Company Limited | Ballymoney | 2026 |
| Clifton Terrace Management Company Limited | Torquay | 1990 |
| Clifton View Management Company Limited | Blackpool | 2014 |
| Cliftons (Freehold) Limited | Bournemouth | 1994 |
| Cliftons and Butlers (Students) Limited | Bristol | 2023 |
| Cliftonthorpe (Management) Company Limited | Ashby-De-La-Zouch | 2005 |
| Cliftonville Avenue Limited | Margate | 2021 |
| Cliftonville Avenue Management Company Limited | Newry | 2004 |
| Cliftonville Court (2000) Limited | Northampton | 1999 |
| Cliftonville Court Burnt ASH Hill (Lewisham) Flat Maintenance Limited | London | 1973 |
| Cliftonville Court Management Company Limited | Dartford | 1971 |
| Cliftonville Freehold Limited | Lee | 2007 |
| Cliftonville Management Limited | Faversham | 2023 |
| Cliftonwood (Bristol) Management Company Limited | Bristol | 2009 |
| Cliftonwood Limited | Aldermaston | 2017 |
| Cliftonwood Terrace Residents Association Limited | Bristol | 2006 |
| Cliftonwood Terrace Roadway Limited | Bristol | 2002 |
| Climatic Properties Management Limited | Plymouth | 2017 |
| Climpland Limited | Hounslow | 1982 |
| Clinkers Arch Residents Association Limited | St. Neots | 1984 |
| Clinton Close (Weybridge) Limited | Weybridge | 2001 |
| Clinton Flat Management Limited | St. Ives | 2005 |
| Clinton House (Surbiton) Residents Association Limited | Hampton | 1964 |
| Clinton House Management Ltd | Derby | 2023 |
| Clinton Park Residents Company Limited | Lincoln | 1998 |
| Clinton Property Management Limited | Hatfield | 2003 |
| Clios Properties Ltd | Nottingham | 2022 |
| Clipbush Business Park Management Company Limited | Kings Lynn | 2007 |
| Clipper Cove Management Company Limited | Truro | 2006 |
| Clipper Quay (Management) Limited | Exeter | 1990 |
| Clipper Scooner Management Limited | Great Yarmouth | 2016 |
| Clipper Way Management Ltd | London | 2008 |
| Clippers Quay (Millwall) Management Company Limited | London | 1984 |