• Castlemartin, Pembrokeshire • Castlereagh, City of Belfast • Castlethorpe, Milton Keynes • Castor, Peterborough • Catford, Greater London • Cawthorne, Barnsley • Cefn Cribwr, Bridgend county borough • Chacewater, Cornwall • Chale, Isle of Wight • Chalton, Central Bedfordshire • Chapmanslade, Wiltshire • Charfield, South Gloucestershire • Charlton, Wiltshire • Chelmsford, Essex • Cherry Burton, East Riding of Yorkshire • Chester, Cheshire West and Chester • Cheswick Green, Solihull • Chetwynd, Telford and Wrekin • Chew Magna, Bath and North East Somerset • Chicheley, Milton Keynes • Chichester, West Sussex • Chicklade, Wiltshire • Chilton Foliat, Wiltshire • Chippenham, Wiltshire • Chiseldon, Borough of Swindon • Chorley, Lancashire • Chorlton, Cheshire East • Churchdown, Gloucestershire • Churchill, North Somerset • City of London, Greater London • City of Westminster, Greater London • Clapham, Bedford • Clayton, Bradford • Clifford, City and Borough of Leeds • Clifford, Herefordshire • Clifton, Central Bedfordshire • Clipsham, District of Rutland • Clive, Shropshire • Clophill, Central Bedfordshire • Clutton, Bath and North East Somerset • Clydach Vale, Rhondda Cynon Taf • Clydach, City and County of Swansea • Coatham Mundeville, Darlington • Coddington, Cheshire West and Chester • Codford, Wiltshire • Cold Ashton, South Gloucestershire • Coleraine, Causeway Coast and Glens • Collingbourne Kingston, Wiltshire • Collingham, City and Borough of Leeds • Collington, Herefordshire • Colmworth, Bedford