Peter Mandelson has told ITV News that Monday's meeting of the Parliamentary Labour Party was "extraordinary" adding: "I don't think there's been a meeting like that in the history of the Labour Party."
A wave of shadow cabinet ministers have resigned in an attempt to force Jeremy Corbyn out.
The leader of the UK's biggest trade union has said the country is 'riven' as a result of the EU referendum.
Len McCluskey told ITV News that the trade unions can help broker a peace deal and reunite the party now the "coup has failed".
Labour leader Jeremy Corbyn said he would 'reach out' to MPs that oppose his leadership but said they should 'respect democracy'.