LONDON, ENGLAND - AUGUST 29: (L-R) Prime Minister David Cameron, Samantha Cameron, Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, Princess Anne, Princess Royal and London ... more 

LONDON, ENGLAND - AUGUST 29: (L-R) Prime Minister David Cameron, Samantha Cameron, Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, Princess Anne, Princess Royal and London Mayor Boris Johnson look on during the Opening Ceremony of the London 2012 Paralympics at the Olympic Stadium on August 29, 2012 in London, England. (Photo by Chris Jackson/Getty Images) less