In 1992 Campbell joined Def Leppard replacing Steve Clark who passed away in 1991. As a member of Dio he was featured on the albums Holy Diver in 1983, The Last in Line in 1984, Sacred Heart in 1985, and Intermission in 1986. With Def Leppard he has played on the albums Retro Active in 1993, Slang in 1996, Euphoria in 1999, X in 2002, Yeah! in 2006, Songs from the Sparkle Lounge in 2008, and Viva! Hysteria in 2013. He has battled with Hodgkin’s lymphoma and as of Jun 2015 he is still fighting it.
