http://media.gettyimages.com/photos/prime-minister-david-cameron-leaves-downing-street-on-april-11-2016-picture-id520434372?k=6&amp;m=520434372&amp;s=612x612&amp;w=0&amp;h=1CQyDIhLe7VE1blCJVtu1G7oH2lfAhgaPINHZPOEJ1k=