Sir Cliff Richard OBE is the biggest-selling artist of all time, selling over 250 million records around the world since he burst onto the music scene in 1958. But how has he kept his appeal all these years? In a world fuelled by drink, sex and drugs, he is perennially attractive without any of those things that keep other singers' profiles high. Now, working with the highly acclaimed biographer and journalist, Penny Junor, Cliff talks freely and...