Latest developments:
Kerry McCarthy has resigned as shadow environment secretary in protest of Jeremy Corbyn's leadership of the Labour Party.
The Bristol East MP joins Lilian Greenwood, Lucy Powell, Ian Murray, Gloria De Piero and Heidi Alexander, who have also stepped down from their roles.
In her resignation letter, she said: "Although I do not doubt your personal commitment to your long-held principles, I believe that a new leader is needed to take on the challenges ahead: Steering our way through the very difficult period facing this country, exerting a decisive influence on the post-referendum negotiations, and winning broad-based electoral support."
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'.