Greggs – Coleraine – Opening Hours & Store Details Greggs can be found at 13/15 Church Street, 0.20 miles west of the centre of Coleraine (near Terrace Row Church and Diamond Centre). This store serves people from the locales of Portstewart, Coleraine Town Centre, Killowen, Ballymoney and Portrush. It is open today (Friday) from 7:30 am – 6:00 pm. This page will provide you with all the information you need about Greggs Coleraine, including the operating hours, store address, email address and additional details.