The festival is still set to go ahead from the 29th July to the 1st August with the road-map out of England's third national lockdown currently ending on the 21st June.
About 25,000 people are expected to attend the four-day music and arts festival at the Lowther Deer Park in Cumbria.
Other performers include The Streets, Supergrass, The Kooks, Frank Turner, The Slow Readers Club and Scouting For Girls.