He and singer Brian Johnson were discussing the band's future on BBC 6 Music's Shaun Keaveny last night, when the topic of appearing at Worthy Farm next year came up.

Johnson said: "I don't know if there's rock 'n' roll there, is there? I'm really not up on it - I thought it was wellies and corporate. I don't know." After being told Metallica had headlined this year's event, Young said: "If they ask, okay. I'll say Shaun sent us."