8-9 The Diamond Ballycastle BT54 6AWBrand: Co-op Food Ballycastle Co-op, 8-9 The Diamond, Ballycastle, BT54 6AW - Co-opBallycastle Co-op, convenience store in Ballycastle, BT54 6AW. Visit your local store for big deals and offers on quality food. https://www.coop.co.uk/store-finder/BT54-6AW/8-9-the-diamond