B&M – Merrielands, Dagenham – Opening Hours & Store Details B&M occupies a space in Merrielands Retail Park on Ripple Road, a 11.88 mile driving distance east of the centre of London, in Dagenham (alongside Goresbrook Interchange of A13). This discount store is pleased to provide service to patrons within the districts of Becontree, Dagenham, Thaxted House, Scrattons Farm, Bartletts House, Oldmead House, Rylands Estate and Rookery Farm Estate. On this page you will find all the significant information about B&M Merrielands, Dagenham, including the opening times, address details and telephone info.