Sir Keir Starmer is facing a major crisis at the heart of his government after his chief of staff was blamed for a botched effort to prevent a leadership challenge.
The prime minister is under pressure to sack Morgan McSweeney over the pre-emptive attempt to see off any coup to oust Sir Keir, with a series of ministers and Labour MPs privately calling for the No 10 chief of staff to go after a day of chaos that has raised serious questions about the government's future.