Britain's outgoing Prime Minister, David Cameron, speaks in front of number 10 Downing Street, in central...
Britain's outgoing Prime Minister, David Cameron, accompanied by his wife Samantha, daughters Nancy and Florence (C) and son Arthur, speaks in front of number 10 Downing Street, on his last day in office as Prime Minister, in central London, Britain July 13, 2016. REUTERS/Peter Nicholls