Amid the social strife of 1970s Britain emerged NWOBHM, the New Wave of British Heavy Metal. New bands from ordinary British towns and suburbs like Iron Maiden, Def Leppard; Saxon, and Girlschool changed the face of amplified music and created a musical and cultural revolution. This is the story of Heavy Metal Kingdom.

A history and tribute to British Jim Marshall's amplifiers, which since then became the standard of rock'n'roll amplifiers ever since.

Nigel Planer narrates a documentary which traces the origins and development of British heavy metal from its humble beginnings in the industrialised Midlands to its proud international triumph. Contributors include Lemmy, Sabbath's Tony Iommi, Ian Gillan from Deep Purple, Judas Priest singer Rob Halford, Bruce Dickinson from Iron Maiden and Saxon's Biff Byford.