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Iain Duncan Smith suggested British workers rights could be put at risk after Brexit , during an epic tantrum on the BBC's Sunday Politics programme.

The frantic on-air meltdown also saw Mr Duncan Smith describe the words of his old boss John Major as "rubbish" and admit it was "unlikely" a major economic authority would be on his side of the debate.

And he suggested the Bank of England, Goldman Sachs and the International Monetary Fund were conspiring with George Osborne and the Treasury to back the Remain campaign.

Here's the most bizarre moments from the extraordinary interview where IDS' let years of pent up frustration finally boil over.

1. When he said there was grand conspiracy theory led by George Osborne

IDS said Bank Of England Governor Mark Carney has breached his obligation to be impartial in the EU debate.

And he goes further...suggesting there's a secret conspiracy at the heart of the In campaign.

He said: "He used to work for Goldman Sachs. We see Goldman Sachs running all the way through this. They are funding the remain campaign, and I'm told by those who know him that he's always been very keen on the whole European project."

He went on: "I would ask to see what the email traffic exchange between the Treasury and the Bank was over this issue. The telephone conversations, the minutes of those meetings, to see whether the Treasury itself has had any involvement in this process whatsoever.

"Because what worries me slightly about what's going on is, we have: 'Oh, this is an accident, is it? The Bank of England comes out on Thursday, and then suddenly the ex-French Foreign Minister, now the head of the IMF comes out on Friday with a similar prediction of global crash."

He added: "It was Thursday then Friday. Are we saying this was an accident? You know, the Governor rings up Christine Lagarde and says "you didn't tell me you were in town, why didn't you give me a call"? Someone's coordinating this."

Host Andrew Neil asked if the ex-welfare slasher was suggesting they were colluding.

IDS replied: "Well, I wonder. I think anybody watching this would think 'Thursday then Friday they have two reports coming out?' Do you think they told each other about what they were doing? I wonder about that."

And then he went way off the reservation, suggesting George Osborne was orchestrating the whole grand conspiracy.

"Of course, the one continuum in all this is, of course, the Chancellor, who's out immediately supporting the Governor, and he sits beside Christine Lagarde, and when she gets up she openly thanks him and the Treasury for their assistance in making her report. They are players in this thing."

2. When he admitted no major economic authorities support Brexit

Asked to name major economic bodies supported his position, he admitted: "I wouldn't expect a major economic authority to be on our side in this argument. It would be completely unusual for all of these institutions not to want to back the status quo."

He went on to dismiss "all these great economic authorities" because none of them predicted the Global Financial Crisis.

He added: "None of these great economic authorities that are lecturing us like mad have ever apologised for their failure. It took the Queen to ask them to apologise."

3. When he said workers' rights should be 'flexible' after Brexit

Andrew Neil asked IDS to pledge to fight to protect the Working Time Directive, protections for equal pay, paid annual leave and maternity pay if we leave.

He doesn't sound all that sure about it, saying : "All of these were accepted by my existing government, the Conservative government, and I believe strongly that there need to be protections for workers. All of these things in a democracy are debatable and debated."

Pressed on whether he would protect them, he said: "As they stand right now, yes."

But Mr Neil skewered him, noting that he opposed the EU social chapter in 1992, voted against the Working Time Directive in 1996 and the minimum wage and 1997.

After a couple of minutes of waffling about migration, he admitted: "The Working Time Directive of itself gave little or no flexibility to business and to employers at the time. It's been in place and we have had to work with it. But the reality here is ... that you protect the workforce, but you make sure that the competition that they face in terms of their jobs is actually fair competition and not unfair competition.

Asked again, if the Working Time Directive was safe, he sounded a lot more shaky than in his initial answer: "UK law would protect what we think is best for the workforce, and that's exactly right. You're a democratic government. The democratic government will decide what it thinks is right. That is possible for Labour or Conservatives to argue and debate.

"I believe that it's right to have it, but the question is how flexible you are over the way it's operated."

4. When he said his old boss was talking rubbish

On Friday, Iain Duncan Smith's old boss, John Major , accused the Out campaign of "pure demagoguery" and "mischief making", saying the people behind it should be "embarrassed".

Presented with the quote he said it was "rubbish."

He added: "He's talking nonsense. This man, John Major who I supported and everything else at the time, he said only a few years ago there was a real issue over immigration."

He added: "Why is it demagoguery? Why is it extremism to speak for British people who feel their views have been tossed aside."

5. When he backed Boris on his Hitler comments

IDS said the article that has got Boris in hot water today was "rather good, actually."

He said the comparison between the EU and Hitler was a "historical fact", saying the "whole process of trying to pull the whole of Europe together by force or through bureaucracy ultimately creates problems."