Argos – Dagenham, Merrielands Retail Park – Opening Hours & Store Details Argos is situated in Merrielands Retail Park on Merrielands Crescent, approximately a 0.53 mile distance south of the centre of Dagenham (not far from St. Peter R C Church and Dagenham Dock Train Station). This store looks forward to serving the patrons of South Hornchurch, Thames View, Elm Park, Scrattons Farm, Barking, Becontree, Rainham, Dagenham, Riverside and Rylands Estate. Please review the specifics on this page for Argos Dagenham, Merrielands Retail Park, including the hours of operation, location particulars and telephone info.