B&M – Plymouth City Centre – Opening Hours & Store Details B&M can be found in a convenient location at 31 Cornwall Street, approximately 0.22 miles south of the centre of Plymouth (a few minutes walk from Coach Station Bus Stop). This discount store primarily provides service to customers from the areas of Barbican, Pennycomequick, Lower Compton, Milehouse, Ford, Lipson Vale, Mannamead and Plymouth City Centre. Here you will find open hours, place of business address and direct contact number for B&M Plymouth City Centre.