Banksy for Stormzy’s headline show at Glastonbury is in the running for a design of the year award.The vest featuring a Union flag by the notoriously secretive street artist is one of 74 nominees for the annual exhibition and awards celebrating the best in cutting-edge design.It faces competition from innovations including a self-sanitising door handle and a memorial for a glacier melted by climate change.Banksy said the vest, made from police equipment, was his take on the traditional John Bull