From Henley, West Sussex to all cities in County Down starting with letter C
- Carrowdore, West Sussex
- Carryduff, West Sussex
- Castlewellan, West Sussex
- Cloghy, West Sussex
- Clough, West Sussex
- Comber, West Sussex
- Conlig, West Sussex
- Corbet, West Sussex
- Crawfordsburn, West Sussex
- Crossgar, West Sussex