Old school friends Mick Jagger and Keith Richards on The Rolling Stones' European tour in 1976. The group played seven nights at Earls Court in London - where this picture was taken. Photographer Nobby Clark described Richards as 'wild and just on the edge' during his performances. Clark's book, 'Starfucker: The Rolling Stones Live In London '76' is out now. www.rollingstonesbook.com