The result of the referendum to leave the EU is now causing pressure to build on Opposition leader Jeremy Corbyn to resign.
Many MPs blame him for so many of the party's voters failing to back staying in the EU.
A string of Labour shadow cabinet members have quit and more walkouts are expected in protest over Mr Corbyn's leadership.
It comes after Labour's foreign affairs spokesman Hilary Benn was sacked after he told Mr Corbyn he had lost confidence in him.
This was Mr Benn's reaction to his sacking.
"At this absolutely critical time for our country, the Labour party needs strong and effective leadership to hold the government to account, as we take decisions of huge importance for the future of our country. He's a good and decent man, but he's not a leader, and that is the problem."
But Mr Corbyn's close ally, John McDonnell says Mr Corbyn is not going to resign.
"Jeremy's not going anywhere. He was elected about nine months ago (with) the biggest mandate of any political leader in our country and he's not going anywhere. The people who are sovereign in our country are the members. It's the members who elected Jeremy and he'll remain. Over the last 48 hours, nearly 200,000 people have signed a petition to support Jeremy Corbyn. The support is enormous. His style of caring compassion, honest politics, I think has got a grip on the country."
On the issue of who will replace Conservative party leader David Cameron, former London Mayor Boris Johnson remains the firm favourite.
He may face a challenge from the current interior minister Theresa May, who campaigned for the UK to stay in the EU.
Secretary of state for Scotland David Mundell says he won't support Mr Johnson if he becomes the leader of the Conservative party.
"I don't think that Mr Johnson is a candidate who can unify the country and I don't mean just Scotland, I mean the whole of the United Kingdom. I think we need someone who, at this difficult time, can bring the whole of the United Kingdom together."
Meanwhile, Scotland's First Minister Nicola Sturgeon continues to express her disappointment with the Brexit result.
Scotland overall voted to remain in the EU, despite most of the rest of the UK voting in favour of leaving.
She's told the BBC the Scottish Parliament could block the British exit from the EU.
"I care about the rest of the UK, I care about England, that's why I'm so upset about the decision that's been taken. But my job as Scottish First Minister, the Scottish parliament's job is to judge these things on the basis of what's in the interests of people in Scotland."
(Reporter): "But can you imagine the fury of the British people if you stopped them leaving Europe?"
"I can but it's perhaps similar to the fury of Scotland right now as we face the prospect of being taken out of the European Union against our will."
The unhappiness of leaving the EU felt by many Scots is being shared by millions in the UK.
A petition calling for a new EU referendum has been signed by more than 3 million people.
The petition was created before the referendum took place and, ironically, was intended to make it more difficult for 'remain' if a 'leave' vote looked less likely.
Since the referendum, the petition has been signed more than 3.2 million times, although nearly 80,000 names have been struck off after they were found to be fraudulent.
The House of Commons Petition Committee says it's removed fraudulent signatures and will monitor the petition for suspicious activity.
