The most famous living rock musician on the planet, Paul McCartney is now regarded as a slightly cosy figure, an (inter)national treasure. Back in the 1970s, however, McCartney cut a very different figure. He was, literally, a man on the run. Desperately trying to escape the shadow of the Beatles, he became an outlaw hippy millionaire, hiding out on his Scottish farmhouse in Kintyre before travell...