B&M – Harwich – Opening Hours & Store Details B&M Home Store with Garden Centre is found in Harwitch Gateway Retail Park on Parkeston Bypass, about a 0.39 mile distance north of the centre of Harwich, in Parkeston (by Morrisons Store). The store is delighted to serve customers within the areas of Upper Dovercourt, Wormingford, Manningtree, Harwich Town, Parkeston and Harwich International. Please note the various sections on this page for specifics on B&M Harwich, including the open hours, place of business address, phone number and other information.