The band’s drummer Ashton Irwin has been diagnosed with appendicitis and will be unable to perform at the event this Sunday.
“Ashton Irwin from 5 Seconds of Summer was admitted to hospital in Sydney with appendicitis yesterday and has subsequently had an operation to remove his appendix,” the band's spokesperson said in a statement.
“Ashton is currently recovering therefore sadly 5SOS will not able to travel this week to the UK for The Radio 1 Teen Awards in London. We are so sorry to everyone that had planned on seeing us at Wembley, we were so excited to come see you all. We can’t wait to get back to the UK soon.,”
The awards are taking place at London’s SSE Arena and celebrate the UK’s unsung teenage heroes as well as the year’s best music, online, sport and entertainment stars.
Ella Henderson, The Vamps, Ariana Grande and Labrinth are set to play the event.