Why are the Lib Dems ruling out going into coalition with another party after the general election?

Mr Farron tells Mr Neil that "the biggest issue of the day is whether we're in the single market".

"We’re not in a position where we could go into coalition with another party... which wants to take Britain out of the free trade deal."

As the interview gets increasingly bad-tempered, Mr Neil asks Mr Farron why his party wants to legalise cannabis, despite a warning by the Royal College of Psychiatrists about the risk of long term schizophrenia.

Mr Farron says he’s looked at the evidence on cannabis and that "the current system doesn’t work".

"I’m someone who thinks drugs do enormous harm in society," he says.

"What we need to do is to do our best to ensure - on the basis of the evidence - that you minimise harm to those who are vulnerable and maximise harm on criminal gangs who take advantage of them."

The Tim Farron interview moves onto the Lib Dems' pledge to raise income tax to help fund the NHS and social care.

"What the Liberal Democrats have done is be honest and direct – if you want the best health service and social care in the world, we’ll have to pay for it," he says.

Even if it means raising taxes of those whose living standards are already in decline? asks Andrew Neil.

"I think having the best NHS and care system in the world is worth the price of a cup of coffee a week," Mr Farron replies.

Tim Farron explains why his party’s manifesto does not include a pledge to get rid of university tuition fees – a promise it previously made, then broke after joining the coalition government with the Conservatives in 2010.

He says it’s “important to have priorities”, and that providing maintenance grants is more important for enabling poorer students to go to university.

“Our priority is to focus on giving people a grant”, he says.

“If there was untold amount of money out there, then things might be different.”

Mr Farron defends his party’s manifesto pledge to notify innocent people who were under surveillance, saying it “seems pretty right and pretty British to tell them afterwards”.

Andrew Neil asks the Lib Dem leader why he wants to reduce the surveillance powers of the security services.

"Do I want to protect the privacy of individuals? Yes of course," says Tim Farron.

"When you see terrorists seeking to undermine our freedoms, our liberties our very way of life, it is very important we don’t allow politicians the easy answer of knee-jerk responses that give away those liberties."

Andrew Neil moves on to ask about the Lib Dems' manifesto on the security services following the Manchester bombing.

He asks why Mr Farron's party wants to roll back the surveillance powers of security services.

"We know how much the security services do to keep us safe," says Mr Farron, speaking emotionally about last week's attack.

"They have the powers they need – what they need is the resources to use them."

“You’re not in last night’s debate,” Andrew Neil says, referring to the seven-way BBC One debate on Wednesday. “You’re in a one-and-one.”

“When you keep talking I can’t answer,” Mr Farron insists.

“You’re not going to heckle me out of this,” replies Neil as he tries again with his question.

In a second referendum on a deal, will Mr Farron campaign to reject any deal that Mrs May does?

“I will campaign on the basis of what’s best for Britain,” says Mr Farron. “I cannot see that Theresa May will get a deal better than the one we already have."

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Mr Neil asks Mr Farron whether - in the second referendum on a Brexit deal that the Lib Dems propose - the Lib Dems would campaign to overturn the first decision for the UK to leave the EU?

Mr Farron stresses the importance of respecting the first referendum result, and the need for the people to have their say on any deal.

But Mr Neil accuses the Lib Dem leader of “filibustering” and a heated discussion ensues with both men speaking over each other.

Andrew Neil questions whether Mr Farron is a "eurosceptic" as he has previously described himself.

“Can you think of any other eurosceptics that would launch their manifesto standing on an EU flag?” he asks.

Image source, Getty Images

Mr Farron replies by saying that “as a liberal I am always prepared to be critical of those who hold power”.

But Mr Neil is unconvinced. “That’s not what euroscepticism means,” he says. “It’s not honest to say that to the British people?”

“I’m passionate about the European ideal,” Mr Farron explains. “I’m often critical of things the [European] Commission does, just as I’m critical of things the British government does.”

Lib Dem Leader Tim Farron tells Andrew Neil that he is concerned countries - singling out France - want to put tariffs and barriers on British exports if the UK leaves the single market.

"Even if we leave the European Union, fighting for Britain’s place in a free trade deal that backs British jobs and keeps prices low is fundamental," he says.

"If you are a patriot and fighting Britain's corner in Europe, you don’t give up on those important aspects of the negotiations."

Andrew Neil questions Mr Farron how he thinks the Lib Dems can appeal to people on both sides of the Brexit debate. If the party is arguing to remain in the single market, and remain under the jurisdiction of the European Court of Justice, in what way will the UK have left the EU?

Some to-ing and fro-ing follows between the pair as they jostle over whether Mr Farron has answered the question.

Mr Farron insists there are different options available in the negotiations.

Andrew Neil is interviewing Lib Dem leader Tim Farron on BBC One. He begins by asking him about Brexit and why Lib Dems are campaigning for UK laws to be made in Brussels.

Mr Farron moves straight to his party’s argument that there should be a referendumon a final Brexit deal.

“We know people voted to leave the EU," he says. "The issue now is how do we move forward?

“We know a deal will be negotiated between Mrs May and those from Brussels – it’s one we’ll have to live with, one our children will have to live with.

"It should be a deal that we agree with as a country – that’s what we’re supporting. We think the people should be trusted with the final deal."

John Pienaar
Pienaar’s Politics

If you're not interested in polling or Star Trek, this podcast probably isn't for you. Otherwise... hear me discussing the shift in the polls with Newsnight’s Chris Cook and our elections guru, Peter Barnes.

Coming up on Friday evening is the Question Time Leaders Special on BBC One, featuring Theresa May, Jeremy Corbyn and a live studio audience.

In the morning, Woman's Hour on BBC Radio Four will be interviewing Education Secretary Justine Greening.

In Scotland, young voters can join a special BBC debate.

Here's the former UKIP leader telling the BBC the report that he figures in an FBI inquiry into Donald Trump is "fake news".

BBC Radio 5 live

The poet Rob Auton has written a poem made up of words and phrases from five political party manifestos. Give it a listen - it gets quite surreal.

Image source, AFP

Nigel Farage has dismissed as "fake news" a report that he is a "person of interest" in the US investigation into possible collusion between Russia and Donald Trump's presidential campaign team.

He told the BBC the story in The Guardian, external was "hysterical rubbish from a liberal media quarter who can't get to grips with the fact that Brexit happened, that Trump happened".

He said he had never been to Russia or done business there.