Jeremy Corbyn has said he would vote Remain again in a further Brexit referendum, as he attacked the state of the deadlocked talks as “shocking”.

The Labour leader gave a straight answer to the question that Theresa May repeatedly dodged, saying: “I thought the best option was to remain, I haven’t changed my mind on that.”

It came as Mr Corbyn made his strongest criticism yet of the floundering negotiations, warning of the very real danger of them collapsing altogether.

“The danger is we will get to March 2019 with no deal, we fall out of the EU, we go on to World Trade Organisation rules and there will be threats to a lot of jobs all across Britain,” he said.

The fifth round of Brexit talks ended on Thursday with the EU’s chief negotiator Michel Barnier warning of a “disturbing” impasse hindering progress.

Labour immediately called for “emergency talks” with the EU in a bid to secure an agreement on Brexit withdrawal terms, ahead of a major meeting of European leaders next week.

On his own position, Mr Corbyn said: “There isn’t going to be another referendum, so it’s a hypothetical question but yes I voted Remain because I thought the best option was to remain, I haven’t changed my mind on that.”

And, on the talks, speaking during a visit to West Yorkshire, Mr Corbyn said: “I think it is quite shocking.

“We are now 15 months on since the referendum and the Government seems to have reached deadlock at every stage.

“Every time there’s talks between [Brexit Secretary] David Davis and [EU chief negotiator] Michel Barnier, both come out making opposite statements.

“David Davis says it’s gone well and Michel Barnier says it isn’t. They can’t both be right.”

Earlier this week, the Prime Minister – who backed Remain during last year’s Brexit vote – was strongly criticised when she said she would “come to a judgement” if there was a repeat.

In a live radio interview Ms May initially declined to answer the question about how she would vote, dismissing it as “hypothetical” because Britain will leave the EU in March 2019.

But, after being pressed repeatedly on how she would vote, she said: “I could sit here and I could say I’d still vote Remain or I’d vote Leave, just to give you an answer. I’m being open and honest with you.”