Anyone with an interest in the history of UK rock 'n' roll is familiar with the Cavern Club and the role that Merseyside played in the story of the British Beat scene. But on a far less celebrated but no less significant path, over a small bridge on an island in the middle of the Thames, another great 60s club night played host to acts that would later make a global name for themselves. The Rolling Stones, Long John Baldry, Rod Stewart, the Small...