The Scottish Labour leader has become the party’s most senior figure to publicly call for Sir Keir Starmer to resign.

Anas Sarwar’s announcement comes as the prime minister fights for political survival over appointing Peter Mandelson as US ambassador.

Two key aides have quit in the past 24 hours.

Downing Street insists the PM will continue his five-year mandate to deliver change.

Gavin Barwell is former advisor to Theresa May and former Conservative MP for Croydon Central.

He says the situation a the moment is devastating for the PM.