BIRMINGHAM, ENGLAND - SEPTEMBER 28:  (EDITORS NOTE: This image was processed using digital filters) Prime Minister David Cameron listens to Leader of the House of Commons, William Hague, address delegates at the Conservative party conference for the last time in his political career on September 28, 2014 in Birmingham, England. The governing Conservative party are holding their yearly conference over the next four days.  (Photo by Matt Cardy/Getty Images)