Greggs – Harwich – Opening Hours & Store Details Greggs occupies a prominent space on Parkeston Bypass, about a 0.46 mile distance north of the centre of Harwich (close to Morrisons Store Bus Stop). The store is an important addition to the areas of Clearsprings Chalet Park, Parkeston, Dovercourt, Harwich Town Centre, Upper Dovercourt, Harwich International and Shotley Gate. If you plan to drop by today (Friday), its store hours are from 6:00 am until 8:30 pm. Read the information on this page for Greggs Harwich, including the opening hours, street address, customer reviews and more info.