Mr Barnier said: “I told him, ‘You led Brexit, you won and now we are delivering Brexit. Can I ask you how you see the relationship between the U.K. and the EU after Brexit?’
“And he said this ‘Mr. Barnier, after Brexit the EU will no longer exist.’ We cannot.”
He added: “Allow Mr. Farage to be right, and this depends on us.”
This tongue-in-cheek exchange highlights the animosity between the bloc and the UK with negotiations so far failing to strike a formal withdrawal agreement.
However Mr Barnier stressed “we are near the end” but “difficult subjects” such as the Irish border remain.
He said: “From the beginning we’ve wanted an agreement with the U.K., to put certainty where Brexit has created so much uncertainty and often anxiety.”
Mr Barnier also warned that a no-deal Brexit would mean a “leap in the dark” for the three million EU citizens living in the U.K. and the 1.5 million British citizens in the EU.
Despite Prime Minister Theresa May continuing to insist the UK will leave the EU with or without a deal, Mr Barnier has stated that Britain will be treated like a “third country” if they ever wanted to return to the bloc.
“If the U.K. changes its red lines, then we will adapt immediately.”
He added: “After (Brexit) it will be a third country, and like a third country it can ask to join the EU.”
Last night a Channel 4 poll carried out by Survation of 20,000 people, indicated a swing of 6 percentage points from Leave to Remain since the 2016 referendum.
The former UKIP leader Mr Farage who was among those in the audience criticised the Prime Minister’s handling of negotiations labelling it a “Remainers Brexit”.
He added: “I think the biggest problem we have got here is a lack of leadership.
“If you ask people, ‘Do you want to make your laws? Do you want to control your own borders? Do you want to make your own trade deals?’ You get big majorities saying yes.
“In its heart the country still wants Brexit. I think it is becoming very disenchanted with politics and politicians.”
Following a Cabinet meeting today the Theresa May was “confident” a deal.
Mrs May’s spokesman said: “The Prime Minister said she was confident of reaching a deal. She said that, while the UK should aim to secure a withdrawal agreement as soon as possible, this would not be done at any cost.
“The Prime Minister said that, once agreement was reached on a withdrawal agreement, it remains the case that nothing is agreed until everything is agreed and it will be subject to securing an acceptable full future framework.”