MailOnline can reveal today how volunteers have been left 'incandescent at the lack of leadership' amid the chaos at the World Scout Jamboree which has seen hundreds treated for heat-related illnesses and forced the US and UK to pull children out. Organisers - who have been heavily criticised for poor preparation - are now facing demands to cancel the event as South Korea battles with a blistering heatwave, where temperatures have soared to 100F. The 4,500-strong UK contingent, the largest at the jamboree, announced yesterday that they would evacuate children to hotels in Seoul for the rest of their stay,...