The government is in full-on leadership crisis - with pressure building on Keir Starmer to resign. 

The Scottish Labour leader Anas Sarwar was the first major figure to go over the top - saying there have been too many mistakes and Starmer should go. A lot of the cabinet are out declaring their support for the PM but it is clear things are moving fast. Starmer's Chief of Staff Morgan McSweeney quit on Sunday over his advice to appoint Peter Mandelson as US ambassador. Today the No 10 director of communications, Tim Allan, also quit. So what next - and if Starmer is going what and who should follow? 

On this episode of the Fourcast, Krishnan Guru-Murthy is joined by Polly Toynbee, a columnist at the Guardian, Tom Baldwin, former Labour communications chief who has also written a biography of Sir Keir Starmer, and Luke Tryl, executive director of the More in Common UK thinktank.