Britain’s Prime Minister David Cameron speaks with BBC journalist Andrew Marr during a televised interview in the garden of 10 Downing Street in London on July 19, 2013 in this handout photo released by the BBC on July 21, 2013. REUTERS/Jeff Overs/BBC/handout via Reuters (BRITAIN – Tags: POLITICS MEDIA CRIME LAW) NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS