B&M – Cardiff Bay – Opening Hours & Store Details B&M Home Store occupies a convenient space in Cardiff Bay Retail Park situated on Ferry Road, approximately 1.56 miles south of the centre of Cardiff, in Cardiff Bay (near Grangemoor Park). This discount store is situated in a convenient location for people from Saint Cuthbert’s Court, The Sand Wharf, Grangetown, Prospect Place, Tiger Quay Development, Reresby Court, Century Wharf and City Gardens. This page will supply you with all the information you need about B&M Cardiff Bay, including the hours of opening, location description, email address and additional details.