And he insists he'd have struggled if Def Leppard were starting out in 2015. He says: "I'm glad it wasn't around when we started, purely because it gave us more opportunity to concentrate on what we really wanted to be.

"It wasn't, like, 'We can't rehearse today because we've got to answer all these questions.' I think that actually is one of the reasons there aren't so many bands coming through the way that we did - they have other tasks they have to perform that we didn't.

"We learned to play our instruments, we learned to sing, we learned to write songs together, and that was our only focus. Once we got that down, and then if other stuff comes in, you can probably split your time and manage to do both.