| Churchview Management Company Annaghmore Ltd | Gilford | 2019 |
| Churchwood Court (Wareham) Limited | Swanage | 1981 |
| Churchwood Park (Chestfield) Management Limited | Whitstable | 2000 |
| Churleswood Court Management Company Limited | Windsor | 2008 |
| Churn Meadows Management Company Limited | Cheltenham | 2007 |
| Churnside Estate Limited | Cheltenham | 2001 |
| Churston Court Management Company Limited | Kingsbridge | 1993 |
| Churston House (Salisbury) Management Company Limited | Salisbury | 1989 |
| Churstonville Court (Overbury Avenue) Residents Association Limited | Beckenham | 1989 |
| Churton Court (Worthing) Limited | Hove | 2010 |
| Churton House Management Company Limited | Leamington Spa | 1986 |
| Churton Management Company Limited | Bishop'S Stortford | 2011 |
| Chus Haus Limited | Mildenhall | 2025 |
| Chuse Cross Woodards Apartments Management Limited | Taunton | 2004 |
| Chwaral Goch Limited | Gaerwen | 2025 |
| Chwb 6 Management Limited | Lytham St Annes | 2017 |
| Chwilog (CAE Bodlondeb) Management Company Ltd | Conwy | 2023 |
| CHY an Porth (Penzance) Management Company Limited | Penzance | 2020 |
| CHY an Porth Freehold Limited | London | 2026 |
| CHY Management Company Limited | Amersham | 2011 |
| Chy-An-Kerris Management Company Limited | St Ives | 1993 |
| Chy-An-Mor Ltd | Redruth | 2026 |
| Chylehan Management Company Limited | Camborne | 2021 |
| Chymedden RTM Company Limited | Truro | 2008 |
| Chyngton Court (Seaford) Limited | Seaford | 1960 |
| Chyngton House Estate Limited | Newhaven | 1983 |
| Chynoweth View (Cubert) Property Management Company Limited | Truro | 2018 |
| Cicce Estate Ltd | Sutton | 2018 |
| Cicce Homes Ltd | Sutton | 2018 |
| Cicero Court Management Company Limited | Southampton | 1978 |
| Cicero Drive 25-28 Limited | Luton | 2003 |
| Cider Mill Residents Company Limited | Evesham | 2021 |
| Cider Orchard Management Limited | Burford | 1997 |
| Cidercort 1416 Limited | Crumlin | 2025 |
| Cigar Factory RTM Company Limited | Lincoln | 2025 |
| Cigman Property Management Limited | London | 1995 |
| Cildes Croft Management Company Limited | Essex | 2017 |
| Cilgant Parc Llandaf Management Company Limited | Salisbury | 2026 |
| Cilm Limited | St. Neots | 2020 |
| Cimacrest Limited | London | 1995 |
| Cinder Hill Management Company Limited | Bishop Auckland | 2017 |
| Cinderella's Works Ltd | London | 2025 |
| Cinderford ST John's Mews Management Limited | Cinderford | 2015 |
| Cini Property Limited | Waterlooville | 2020 |
| Cinis One Limited | Bicester | 2015 |
| Cinnabar House RTM Company Limited | Croydon | 2018 |
| Cinnabar Wharf RMC Limited | Borehamwood | 2016 |
| Cinnamon Building RTM Company Limited | Liverpool | 2022 |
| Cinnamon Court (Upholland) Management Company Limited | Skelmersdale | 2017 |
| Cinnamon Court Management Company (IW) Limited | Newport | 2007 |
| Cinquante Cinq Limited | Surrey | 2003 |
| Cintra Court RTM Company Limited | London | 2012 |
| Cintra House (Management) Limited | Marlow | 1987 |
| CIO Management Services Ltd | Ruislip | 2019 |
| Cipb Properties Ltd | Blackpool | 2025 |
| Cipher Court RTM Company Limited | London | 2025 |
| Ciphertravel Limited | Barnsley | 1986 |
| Circa Apartments Residents Management Company Limited | Croydon | 2003 |
| Circle Bricks Ltd | Knottingley | 2022 |
| Circle Flat(Management)Co.Limited(The) | Newport | 1971 |
| Circle Gardens (Freehold) Ltd | Send | 2015 |
| Circle Property Management Ltd | London | 2023 |
| Circle Property Rentals Ltd | Lincoln | 2022 |
| Circle Relocations Ltd | Milton Keynes | 2019 |
| Circle ROW Properties Limited | | 1993 |
| Circlebell Property Management Limited | Cardiff | 1984 |
| Circlebond Property Management Limited | Southend-On-Sea | 1984 |
| Circlefine Residents Association Limited | London | 1984 |
| Circleflint Residents Association Limited | Luton | 1983 |
| Circlegrass Residents Association Limited | | 1983 |
| Circlegreen Residents Association Limited | Watford | 1983 |
| Circlestone Residents Association Limited | London | 1983 |
| Circlet Homes Limited | Norwich | 2012 |
| Circular Mews Management Limited | 150 Holywood Road | 2002 |
| Circular Road Management Limited | Stockport | 2002 |
| Circular Road Mews Management Company Limited | | 2005 |
| Circus Area Residents Association Limited | Bath | 2013 |
| Circus House (Bath) Management Limited | | 1984 |
| Circus Mansions Bath Limited | Bath | 1991 |
| Circus Mews Bath Management Company Limited | Bath | 1987 |
| Circus Mews Investment Limited | Bath | 2007 |
| Circus Street Property Management Company Limited | London | 2022 |
| Cirrus Court (Upminster) Ltd | Ongar | 2007 |
| CIS Land Limited | Glasgow | 2020 |
| Cissbury Chase (Worthing) Management Company Limited | Arundel | 2013 |
| Citadel (Greencourt) Management Company Limited | Macclesfield | 1983 |
| Citadel Apartments Management Limited | London | 2000 |
| Citadel Care Limited | Ruddington | 2020 |
| Citadel Court (Plymouth) RTM Company Limited | Plymouth | 2025 |
| Citadel Court Residents Association Limited | Bromley | 1999 |
| Citadel Landmark Limited | Bridport | 2019 |
| Citadel Management Limited | East Cowes | 2008 |
| Citadel Road Management Limited | Dover | 2007 |
| Citizens Auckland Road Management Limited | London | 1981 |
| Citrine Management Ltd | Potters Bar | 2020 |
| Citrus House Management Company Limited | Poole | 2013 |
| City and North Mill RTM Company Ltd | London | 2016 |
| City and Rural Logistics Ltd | Staffordshire | 2023 |
| City Apartments Leigh-On-Sea RTM Company Limited | Leigh-On-Sea | 2025 |
| City Bank Road (Residents) Limited | Cirencester | 2006 |