Supermarkets in Castlerock, Northern Ireland The most complete information about Supermarkets in Castlerock, Northern Ireland: Addresses, phone numbers, reviews and other information. All stores Convenience Store Supermarket All supermarkets in Castlerock Costcutter Store Supermarket 4QA, 1-3 Main Street, Castlerock, Coleraine, Castlerock, Northern Ireland BT51 4RA Get Directions Contacts Write a review