| Coniston Court RTM Company Limited | Southport | 2013 |
| Coniston Court South RTM Company Limited | Hove | 2011 |
| Coniston Grange Management Company Limited | Coventry | 1994 |
| Coniston House Group Ltd | Morecambe | 2021 |
| Coniston House Limited | Beckenham | 2002 |
| Coniston House Management Limited | Croydon | 2000 |
| Coniston House Residents Association Limited | Whippingham | 1984 |
| Coniston House RTM Company Ltd | Liverpool | 2025 |
| Coniston Lodge Management Company Limited | Shrewsbury | 1983 |
| Coniston West Park Management Company Limited | Southend-On-Sea | 1983 |
| Conlech Enterprises Limited | Staffordshire | 2005 |
| Connaught AVE (Chingford) Limited | London | 2016 |
| Connaught Avenue Limited | Barnet | 2012 |
| Connaught Avenue Residents Limited | London | 1996 |
| Connaught Court Management Limited | Southsea | 2020 |
| Connaught Court Residents Limited | London | 1988 |
| Connaught Court Residents Management Limited | London | 1997 |
| Connaught Fold Property Company Limited | Huddersfield | 1997 |
| Connaught Gardens (Muswell Hill) Management Limited | Epsom | 2023 |
| Connaught Gardens (Winkfield) Management Company Limited | Winkfield Row | 2019 |
| Connaught Gardens Ltd | Barnet | 2024 |
| Connaught Gardens Management Company Limited | London | 2023 |
| Connaught Gardens Residents Association Limited(The) | Redhill | 1985 |
| Connaught Gate Management Company Limited | Woking | 2006 |
| Connaught Green (Anfield) Management Company Limited | Hertfordshire | 2008 |
| Connaught House (Cardiff) Limited | Cardiff | 1986 |
| Connaught House (ST John's Wood) Management Limited | London | 2026 |
| Connaught House (Tenby) Management Company Limited | Tenby | 2018 |
| Connaught House Bagshot Management Company Limited | Leatherhead | 2020 |
| Connaught House RTM Company Limited | Bognor Regis | 2006 |
| Connaught Management (Weston-Super-Mare) Limited | Weston-Super-Mare | 1990 |
| Connaught Mansions Management Company Limited | Bristol | 1979 |
| Connaught Mews (SW6) Ltd | London | 1999 |
| Connaught Mews Management Company Limited | Cardiff | 1990 |
| Connaught Mews Residents Limited | Ilford | 2004 |
| Connaught Mews SE18 Management Company Limited | Bromley | 1997 |
| Connaught Place (Brockenhurst) Management Company Limited | Southampton | 2024 |
| Connaught Place (Hale Barns) Management Company Limited | Ardwick Green | 2015 |
| Connaught Place Holdings Limited | London | 2021 |
| Connaught Place Management Company Limited | Havant | 1997 |
| Connaught Place Services Limited | London | 2024 |
| Connaught RD Management Ltd | Folkestone | 2017 |
| Connaught Road (Folkestone) Ltd | Croydon | 2017 |
| Connaught Road Flat Management Limited | Cardiff | 1991 |
| Connaught Road Management Co. Limited | Clacton-On-Sea | 2019 |
| Connaught Road Management Company Camberley (NO.2) Limited | Camberley | 2012 |
| Connaught Square Garden Limited | London | 2016 |
| Connaught Square Winchester RTM Company Limited | Winchester | 2020 |
| Connaught Wood Management Company Limited | Leigh On Sea | 2004 |
| Connect 21 Community Limited | New Milton | 2007 |
| Connect Housing Services Ltd | London | 2026 |
| Connected With Style Limited | New Malden | 2010 |
| Connections (Brentwood) Management Company Limited | Huntingdon | 2007 |
| Connections Residents Company Limited | Reading | 2008 |
| Connemara Close Ltd | Tamworth | 2018 |
| Connexion (Rainham) Management Company Limited | Barking | 2005 |
| Connexions (Eastleigh) Management Company Limited | New Milton | 2010 |
| Conningbrook Lakes Management Limited | London | 2018 |
| Connington Gardens (Phase 2) SE13 Management Company Limited | Marden | 1998 |
| Connolly Drive (Birmingham) Management Company Limited | Shrewsbury | 2000 |
| Connolly House (Wimbledon) RTM Company Limited | Leatherhead | 2013 |
| Connolly Mews Residents Association Limited | Hoddesdon | 2001 |
| Connolly Place Management Company Limited | Hertford | 2000 |
| Connolly Property (UK) Ltd. | Falkirk | 2016 |
| Connor Court (Freehold) Limited | London | 2009 |
| Connor Court Management Company Limited | London | 2006 |
| Connor Road (Parklane) Management Limited | Parkgate | 2007 |
| Connsbrook Avenue Apartments Ltd | Belfast | 2007 |
| Connseb Properties Limited | Westcliff-On-Sea | 2020 |
| Conqueror’S Gate (Battle) Management Company Limited | Reigate | 2026 |
| Conrad Court (Beckenham) Management Limited | Bromley | 1977 |
| Conrad Court RTM Company Ltd | Aylesbury | 2025 |
| Conrad's Yard Management Company Limited | Hoddesdon | 2006 |
| Conran Perrett (Property Management) Ltd | Llanrwst | 2020 |
| Conroy Court RTM Company Ltd | Southampton | 2011 |
| Consero Court (Sutton) Management Company Limited | Sutton | 2007 |
| Consero Court Management Company (Brooklands Road) Limited | London | 2007 |
| Consero Court Management Company Limited | Godstone | 2005 |
| Conservatory Court Freehold Limited | Orpington | 2018 |
| Conservatory Warm Roofs Limited | Peterlee | 2017 |
| Consiglio Limited | Falmouth | 1972 |
| Consort Apartments Limited | Plymouth | 2004 |
| Consort House Management Limited | London | 2001 |
| Consort Lodge Management Limited | Surbiton | 1993 |
| Consort Place Residents Association Limited | Altrincham | 1993 |
| Consort Place Residents Limited | Ascot | 2002 |
| Consort Residents Management Company Limited | Birmingham | 2019 |
| Consort Village Management Company Limited | Plymouth | 1994 |
| Consortia Management Limited | Newport | 2013 |
| Constable Chase (Colchester) Management Company Limited | Colchester | 2003 |
| Constable Court Management Company Limited | Norwich | 2007 |
| Constable Gardens (Residents) Management Company Limited | Chelmsford | 2023 |
| Constable Grange (Colchester) Management Company Limited | New Milton | 2017 |
| Constable House Management Company Limited | Manchester | 2002 |
| Constable Mews Management Limited | Croydon | 2017 |
| Constable Place Management Company Limited | Saffron Walden | 2020 |
| Constable Vale (Hadleigh) Residents Management Company Limited | York | 2024 |
| Constablewood Ltd | Largs | 2025 |
| Constabulary Close (West Drayton) Management Company Limited | London | 2018 |
| Constance & Carraways Management RTM Company Limited | Braintree | 2004 |