It is genuinely difficult to work out where the drama ends and the documentary takes over. When I sat down to watch it I had no idea whether Ray, the fan who becomes a roadie, was an actor or the genuine article. The stilted nature of some of the conversations, and self-conscious grins accompanying them, indicate contrivance, but it's as if real conversations are being reproduced for the camera. Only afterwards did I discover that Ray Gange was acting and had written the script.

The film provides an insight into the world of punk rock in the late seventies. The Clash were more musically adept, and more politically aware, than most punk bands of the era, but the rebellious swaggers and the anger were typical enough. The concert footage is entertaining, and only marred by the fact that much is filmed from the back of the stage. It features much of the band's best material, from White Riot to Tommy Gun to London's Burning.

This is a nostalgic treat for old punk rockers, and a useful introduction for those who, in the late 70s, were too young or allowed punk rock to pass them by.