He revealed earlier this year he was suffering from Hodgkin's Lymphoma, but after a course of chemotherapy he's set to make a full recovery. In a new video Campbell tells the Lymphoma Assocation: "I was on tour with Def Leppard in 2011 when I noticed something was amiss. We were in Australia and I got ill. I saw a doctor and got antibiotics, but I had this residual cough.

"The last time we played in England I got ill again, so I knew something was going on with my immune system. When I exerted I noticed I coughed more. It got worse and worse. I was coughing all the time."

He admit he didn't know what to think when he was told what was wrong. "I'd heard of Hodgkin's Lymphoma, but I didn't actually know it was cancer," he says.

"They did a bone marrow biopsy and discovered it wasn't advanced, fortunately, so the doctor let me go to Las Vegas and do those shows � which was good. The fact I had work to concentrate on was good."