| Coltstate Limited | London | 1984 |
| Coltswood Court Block B Limited | London | 2005 |
| Columbia 149 Limited | Bournemouth | 2006 |
| Columbia Close Management Company Limited | Bromley | 1979 |
| Columbia Court Residents Association Limited | Edgware | 1984 |
| Columbia Gardens Limited | Wimborne | 2009 |
| Columbia Place RTM Company Limited | London | 2025 |
| Columbia Pump Station and Driveway Limited | Bournemouth | 2024 |
| Columbian House RTM Company Limited | Littlehampton | 2012 |
| Columbine Heights Management Company Limited | Whitstable | 2004 |
| Columbine Property Group Ltd | Pudsey | 2025 |
| Columbus House Land Ltd | Bath | 2010 |
| Columbus House Limited | Bath | 1999 |
| Columbus Point (Management Company) Limited | Eastbourne | 2001 |
| Columbus Ravine Management Limited | Scarborough | 2009 |
| Columbus Residents Limited | Stevenage | 1992 |
| Columns Design & Associates Limited | Brighton | 2004 |
| Colver Property Rentals Ltd | Wigan | 2014 |
| Colvettia Ltd | Colchester | 2025 |
| Colview Court (Mottingham Lane Eltham) Residents Company Limited | Greenwich | 1988 |
| Colville Court (Eastbourne) Limited | Brighton | 1996 |
| Colville Court Residents Association Limited | Camberley | 1988 |
| Colville Freehold Limited | Great Sutton | 1993 |
| Colville Gardens Management Company Limited | Surrey | 1990 |
| Colville Road Management Limited | London | 2002 |
| Colville Square Mews Management Company Limited | London | 2001 |
| Colwall Court Management Limited | Epsom | 2009 |
| Colwall Gardens Management Company Limited | Malvern | 2018 |
| Colwick Business Park Management Company Limited | Nottingham | 2003 |
| Colwill Properties Ltd | Redruth | 2024 |
| Colwith (NO 88/90) Property Services Ltd | Hammersmith | 2024 |
| Coly House Management Company Ltd | Colyton | 2023 |
| Colyer Limited | London | 2025 |
| COM4T Homes Ltd | Sunderland | 2024 |
| Comanage Ltd | Liverpool | 2025 |
| Comb Place Management Limited | Tunbridge Wells | 1999 |
| Combe & Browne (Services) Limited | Kidderminster | 1964 |
| Combe Down Residents Association Limited | Southampton | 1986 |
| Combe Farm Management Company Limited | Kingsbridge | 1996 |
| Combe Fields Portishead (Management) Limited | Clevedon | 1981 |
| Combe Gate Management Company Limited | Witney | 1986 |
| Combe Hill Flats Limited | Hereford | 2014 |
| Combe House Management Company Limited | Bristol | 2022 |
| Combe Lodge Management Limited | Malvern | 1999 |
| Combe Rise Management Company Limited | Farnham | 1980 |
| Combe Royal Crescent (Bath) Company Limited | Bath | 2000 |
| Combe Street Flats (Chard) Limited | Chard | 2003 |
| Combe Street Management Co Limited | Chard | 2014 |
| Comber Court Management Company Limited | Carrickfergus | 2001 |
| Combermere Management Limited | Malvern | 1989 |
| Comberton Court Management Limited | Kidderminster | 1982 |
| Comberton Flat Management Company Limited | Chelmsford | 1983 |
| Comberton Hall Lodge Management Company Limited | Kidderminster | 2007 |
| Comberton Mansions Limited | Bromsgrove | 1994 |
| Comc Limited | Cardiff | 2018 |
| Comeragh Road (81) Limited | | 1981 |
| Comeragh Road Freehold Limited | Hampton | 2006 |
| Comeragh Road Limited | London | 1995 |
| Comery Capital Ltd | Ilkeston | 2025 |
| Comet Square Phase Two Block Management Company Limited | Cheshunt | 2005 |
| Comet Works Limited | Birmingham | 2020 |
| Cometa Management Limited | Windsor | 2008 |
| Cometlodge Limited | Leeds | 1987 |
| Comfihomes Ltd | Salford | 2020 |
| Comfort Briggids Limited | Bushey | 2023 |
| Comfort Cove Ltd | Stoke On Trent | 2025 |
| Comfort for Home Limited | Norwich | 2024 |
| Comfort Heaven Properties Ltd | Liverpool | 2024 |
| Comfort House Ltd | Shrewsbury | 2016 |
| Comfort Mart Limited | High Wycombe | 2019 |
| Comfrey House RTM Company Limited | Swindon | 2011 |
| Comfy Canines Ltd | Stockton-On-Tees | 2019 |
| Comfy Corner Ltd | Mitcham | 2023 |
| Comfy Pillows Limited | Enniskillen | 2020 |
| Comilla Court (Branksome) Limited | Poole | 1961 |
| Comley Court Management Company Limited | Southampton | 2003 |
| Commandshiftx Limited | London | 2024 |
| Commerce House Freeholders Limited | Heathfield | 2024 |
| Commerce House RTM Company Ltd | London | 2025 |
| Commercial Brow Management Company Limited | Altrincham | 2005 |
| Commercial Cleaning Contractors Ltd | Cardiff | 2015 |
| Commercial House Property Management Ltd | Newry | 2020 |
| Commercial Property Surveys Limited | Newcastle Upon Tyne | 2005 |
| Commercial Street (Hereford) Management Company Limited | Hereford | 2004 |
| Commercial Street (Higham) Limited | Northampton | 2012 |
| Commercial Street (Norton) Management Company Limited | Leigh-On-Sea | 2018 |
| Commercial Wharf (Gravesend) Flat Management Company Limited | Gravesend | 2000 |
| Commercial Yard Management Company Limited | Darlington | 2004 |
| Commissioners Hayfield Residents Company Limited | Gillingham | 2001 |
| Commissioners Wharf Maintenance Limited | Tyne & Wear | 1999 |
| Commissioners Wharf Management Company Limited | Jarrow | 2003 |
| Commissioners Wharf RTM Company Limited | Gateshead | 2011 |
| Commodore Court (Nottingham) Ltd | Nottingham | 2026 |
| Commodore Court Ltd | Nottingham | 2020 |
| Commodore Court Management Company Limited | Southampton | 1992 |
| Common Edge Management Company Limited | Blackpool | 1997 |
| Common Farm Courtyard Ltd | Derby | 2024 |
| Common Farm Lane Management Limited | Bedford | 2012 |
| Common Ground Management Limited | London | 2025 |
| Common Road (Kensworth) Management Company Limited | Dunstable | 2018 |