(FILES) This file photo taken on September 21, 2015 shows Britain's Chancellor of the Exchequer George Osborne (R) sharing a light moment with Commercial Secretary to the Treasury Jim O'Neill (L) as they witness a signing ceremony of the 7th China-UK strategic economic dialogue "Roundtable on Public-Private Partnerships" at Diaoyutai State Guesthouse in Beijing on September 21, 2015. British Prime Minister Theresa May's government suffered its first resignation on September 23, 2016 when a former Goldman Sachs chief economist closely associated with the policies of her predecessor David Cameron quit. Lord Jim O'Neill, who had worked on boosting Chinese investment in Britain and a flagship project to bolster the economy in northwest England, stepped down as a junior Treasury minister. / AFP PHOTO / POOL / ANDY WONGANDY WONG/AFP/Getty Images