The Prime Minister is facing the biggest leadership crisis of his premiership after Rishi Sunak quit as chancellor and Sajid Javid resigned as health secretary.
Mr Johnson was battling to remain in No 10 as his handling of the row over scandal-hit former deputy chief whip Chris Pincher became the latest issue to raise questions over his judgment. A humiliating apology from the PM was unable to stop the huge resignations of two senior ministers and potential leadership rivals, with sharing their letters on Twitter.
Mr Sunak said: "The public rightly expect government to be conducted properly, competently and seriously", adding: "I believe these standards are worth fighting for and that is why I am resigning."
