LONDON, JULY 13, 2016 (Xinhua) -- British outgoing Prime Minister David Cameron(1st L) gives a speech with his family before leaving 10 Downing Street in London, Britain on July 13, 2016. Cameron bid farewell to 10 Downing Street and headed to Buckingham Palace to offer his resignation to Queen Elizabeth II on Wednesday afternoon. (Xinhua/Han Yan)
