A billionaire Tory donor has warned Boris Johnson's premiership is "past the point of no return" and said the embattled Prime Minister should step down.
Hedge fund boss John Armitage, who has donated more than £3m to the Conservatives in the past, said leaders "should leave" if they lose their "moral authority" - and branded the lack of honour in modern politics "incredibly distressing".
Asked if the Prime Minister was "past the point of no return", he told the BBC: "Well, personally yes."
