New research finds UK store cards losing out to credit cards in today's market. The research shows that over the past four years, store card sales have suffered from increasing competition from credit and debit cards and a more financially aware British public. The image of store cards has been dented by adverse publicity surrounding their high rates of interest compared to other forms of consumer credit. Although penetration of store cards is fairly high, their frequency of use rate is not. Three quarters of store card accounts are either dormant or are not being used to their full potential, research from Mintel shows.