B&M – Dumbarton – Opening Hours & Store Details B&M Home Store with Garden Centre, which currently occupies a suite in St James Retail Park, is situated at 19 Glasgow Road, a 0.12 mile distance east from the centre of Dumbarton (not far from Knoxland Primary School). This discount store is an added feature to the locales of Bellsmyre, Townend, Dalreoch, Silverton, Castlehill, Dumbarton Town Centre, Kirktonhill and Brucehill. On this page, you can find information about B&M Dumbarton, including the hours of operation, location details and customer reviews.