Keir Starmer has said he sacked a shadow minister who joined a picket line for "making up policy on the hoof" in a move that reignited Labour's civil war.
Former Shadow Chancellor John McDonnell said the decision to fire Sam Tarry was a "severe mistake" and accused the Labour leader of "misreading" the level of public support for striking workers.
Mr Tarry was sacked yesterday after giving a string of interviews from a picket line without permission from party HQ, in which he backed the rail strikes and suggested that workers should get above inflation pay rises.