- EICR Carterton
- EICR Chalfont St. Giles
- EICR Chalfont St. Peter
- EICR Charlbury
- EICR Cheltenham
- EICR Chesham
- EICR Chesterfield
- EICR Chester-le-Street
- EICR Chilton
- EICR Chinnor
- EICR Chipping Campden
- EICR Chipping Norton
- EICR Churchdown
- EICR Cinderford
- EICR Cirencester
- EICR Cleckheaton
- EICR Cleethorpes
- EICR Coleford
- EICR Coleshill
- EICR Conisbrough
- EICR Consett
- EICR Corby
- EICR Cottingham
- EICR Creswell
- EICR Crook
- EICR Crosby
Certified by the following organisations
