B&M – Sunderland Retail Park – Opening Hours & Store Details B&M Store is situated directly in Sunderland Retail Park on Sunderland Gateway, about a 4.43 mile distance north-east from the centre of Sunderland (nearby Roker Avenue-George Street North-E / B). This discount store is properly situated to serve customers from the areas of Southwick, Bishopwearmouth, Monkwearmouth, Stadium of Light, St Peter’s and Sunderland City Centre. Business times, location description and telephone number for B&M Sunderland Retail Park can be found on this page.