Labour's Brexit: Jeremy Corbyn said he will not threaten EU
Mr Corbyn said Labour stands ready to start negotiations "immediately" after the election and revealed talks are already underway.
Shadow Brexit secretary Sir Keir Starmer has already visited "most" European capitals and met representatives from the European Commission and European Parliament, he added.
My Corbyn said: ”We will approach the negotiations as I have set out, in a very serious way, primarily to gain and continue this tariff-free access to the European market.
"But we're not approaching the negotiations by threatening Europe, by threatening that if you don't give us everything we want on day one, we're going to walk away, slash corporation tax, give lots of giveaways to very big corporations in order to set up some kind of rival tax haven on the shores of Europe.
"We are leaving the European Union, we're still going to have to have a relationship with Europe in the future and that will be the basis of our negotiations.
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"And so we will approach them obviously immediately after the election, obviously, on that principled basis."
During the media event in Westminster the Labour leader hit back at Mrs May’s comments he would be “alone and naked” in Brexit negotiations.
He said: “I certainly wouldn't use language like that myself, I think it's totally inappropriate to describe anyone as naked, even me.”