Just back from this years Glasto, and already planning the next one! I think Taylor Swift is a cert, but after that, who knows? Pink? Madonna? Rihanna? Could Beyoncé be an option? I also heard Spice Girls have been asked.
And I know Guns & Roses don't seem to have gone down so well this year, but Metallica did back in 2014, so I think AC/DC could be an option? Surely getting close to retirement, with just the PowerTrip festival announced since their last album came out. They do have wide-ranging appeal, and have also been mentioned...