B&M – Gainsborough – Opening Hours & Store Details B&M Store is located in an ideal place at 14-20 Lord Street, approximately 0.08 miles south-west from the centre of Gainsborough (by Gladstone Street). The store is an outstanding addition to the local businesses of Gainsborough Town Centre, East Trent Junction, Beckingham Yard, Bran’s Hill, Flood Arches, Double Hills, Dog Island and Morton. Working times, place of business address details or phone info for B&M Gainsborough can be found here.