Formed in 1975, the membership now includes around 95 of the country's leading retailers. Members range from major High Street retailers to out of town large space occupiers. Key members include Marks & Spencer plc, Woolworths plc, WH Smith plc, Arcadia Group plc, John Lewis, Debenhams and Boots. It can boast a number of significant achievements, which have enhanced the professionalism of the industry and improved the dialogue between landlords and tenants.