McCartney also told of his joy at receiving a Gershwin Prize For Popular Song from the US President Barack Obama. The star was presented with the award at the White House earlier this month, and he admitted he was ‘very honoured.’ ‘I’ve never met an incumbent president so it was really good. I was very honoured to tell you the truth because I’m a fan of his. ‘You know, I think he’s a great president and to be there getting this great prize and it being presented by him, it was so many things for me.' McCartney and Stevie Wonder...