The survey of 109 firms, consisting of 53 retailers, revealed a weak month for retailers, with year-on-year sales volumes declining for the first time since October 2017.
Additionally, sales for the time of year were significantly below normal, and by the greatest extent since April 2013. The volume of orders placed with suppliers, meanwhile, was broadly unchanged.
The fall in retail sales was broad-based, with lower sales at non-specialised stores (i.e. department stores), furniture & carpets, clothing, and other normal goods the main drags on headline sales growth.