EXCL: Sir Mark Sedwill 'facing the axe as Cabinet Secretary' if Brexiteer becomes Prime Minister

Sir Mark Sedwill faces the axe as Cabinet Secretary if a Brexiteer wins the race to become Tory leader, PoliticsHome has learned. The Whitehall bigwig, who is also Theresa May's national security adviser, is unpopular with a number of high-profile Conservatives. They include Boris Johnson and Michael Gove, both of whom are tipped as possible successors to the Prime Minister.