- Cannock
- Carlisle
- Carnforth
- Chesterfield
- Coalville
- Castleford
- Catterick Garrison
- Coventry
- Cheadle
- Cradley Heath
- Chester
- Chathill
- Chorley
- Chester le Street
- Cleator
- Choppington
- Cleethorpes
- Cleator Moor
- Cleethorpes
- Cleckheaton
- Consett
- Clitheroe
- Cockermouth
- Corbridge
- Cornhill on Tweed
- Colne
- Cottingham
- Congleton
- Cramlington
- Coniston
- Crewe
- Crook
- Cambridge
- Chatteris
- Cromer
- Callington
- Calne
- Calstock
- Camborne
- Camelford
- Castle Cary
- Chard
- Cheddar
- Cheltenham
- Chippenham
- Chipping Campden
- Christchurch
- Chulmleigh
- Cinderford
- Cirencester
- Clevedon
- Coleford
- Colyton
- Corsham
- Crediton
- Crewkerne
- Cullompton
- Camberley
- Canterbury
- Canvey Island
- Carshalton
- Carterton
- Caterham
- Chalfont St. Giles
- Chatham
- Chelmsford
- Chertsey
- Cairndow
- Chesham
- Callander
- Chessington
- Campbeltown
- Canonbie
- Chichester
- Chigwell
- Carluke
- Carnoustie
- Chinnor
- Carrbridge
- Chipping Norton
- Chislehurst
- Castle Douglas
- Clacton on Sea
- Clackmannan
- Cobham
- Clydebank
- Colchester
- Coatbridge
- Corby
- Cockburnspath
- Coldstream
- Coulsdon
- Colintraive
- Cowes
- Cranbrook
- Corrour
- Cowdenbeath
- Cranleigh
- Crawley
- Crianlarich
- Crieff
- Crowborough
- Cromarty
- Crowthorne
- Croydon
- Cumnock
- Cupar
- Currie
- Caernarfon
- Caerphilly
- Caersws
- Caldicot
- Cardiff
- Cardigan
- Carmarthen
- Cemaes Bay
- Chepstow
- Church Stretton
- Clarbeston Road
- Clynderwen
- Colwyn Bay
- Conwy
- Corwen
- Cowbridge
- Craven Arms
- Criccieth
- Crickhowell
- Crymych
- Cwmbran
Cities