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David Miliband has urged the UK to seek a "safe harbour" after Brexit by staying in the European Economic Area.

The ex-Labour foreign secretary said Jeremy Corbyn, who has ruled out the so-called Norway model, risked becoming the "midwife of a hard Brexit".

Ministers say EEA membership would require the UK to accept most EU rules as well as freedom of movement.

But Mr Milband told the BBC that the UK must get real, saying that 60% of UK trade was "under European aegis".

Mr Miliband, who has worked for the International Rescue Committee in New York since 2013, joined politicians from other parties who favour retaining the closest links with the EU for a press conference on Monday.

Conservative MP Jacob Rees-Mogg, who backs a clean break with the EU after the end of the transition period in December 2020, said their actions were "the last rearguard action to stop Brexit".

Speaking at rice manufacturer Tilda's factory in Essex, Mr Miliband, former Lib Dem leader Sir Nick Clegg and Tory former education secretary Nicky Morgan urged Parliament to force the government's hand by voting for the UK to remain in some form of customs union as well as retaining full access to the single market.

Mrs Morgan said the "differing and irreconcilable" views of ministers meant Parliament "had to step up to the plate".

Urging MPs to resist "siren voices" arguing the UK could replicate existing economic benefits outside the customs union and single market, she said the UK was being asked to "experiment" with a new trade policy without any idea of its costs.

Image copyright PA Image caption Nicky Morgan said the referendum result was being wilfully distorted

"That is not a manifestation of democracy, it is a tyranny, a distortion of the referendum result and MPs should call it out," she said.

Asked why after more than five years out of British politics, the public should listen to him, Mr Miliband said many of the complex, vital issues now being discussed simply did not feature in the Brexit referendum.

"I don't take the referendum result as the end of the story," he said. "Democracy cannot be allowed to end on 23 June 2016, debate cannot be allowed to end."

Sir Nick Clegg said while Brexiteers "parroted the language of global Britain", their policies would result in the "greatest introduction" of trade barriers since World War Two.

Earlier, Mr Miliband told BBC Radio 4's Today programme the move was about cross-party working in the national interest, not creating a new political movement or new centrist political party.

Many Labour MPs, and some Tories, favour the so-called "Norway model" of remaining in the EEA - which is an economic grouping of all EU countries as well as Norway, Liechtenstein and Iceland.

'On the table'

EEA membership would see the UK retain full access to the EU's internal market of 300 million consumers in return for making financial contributions and accepting most EU laws.

Free movement laws would also apply - so EU citizens could move to all EEA countries to work and live.

The government says this would be counter to the EU referendum, which Mrs May has described as "a vote to take control of our borders, laws and money".

Mr Miliband said EEA membership would allow the UK to have "structured" trade relations with the EU in goods and services, citing support from Norway for the UK to be a member.

While the EU accounted for 40% of the UK's direct trade with the EU, Mr Miliband said that if you took into account third-party EU trade agreements with other countries, the figure was about 60%.

"Membership of the EEA, as what I would call a safe harbour for Britain after Brexit, is on the table for every MP and party leader," he said.

Mr Miliband joined a growing chorus of senior Labour figures - including former Lord Kinnock - calling on Mr Corbyn to rethink his position ruling out the EEA option.

"If Jeremy Corbyn is not careful, he will be the midwife of a hard Brexit that will threaten the living standards of the very people that he says he wants to stand up to represent," he said.

'Customs impasse'

But Mr Rees-Mogg, who chairs the influential European Research Group of Conservative MPs, said it was a "last-gasp effort" by those who want the UK to stay in the EU.

"The Remainers are fighting their last rear-guard action to try and stop Brexit," he told LBC Radio.

"They're doing it in the House of Lords and there's this grouping that's come out today. If that doesn't succeed... then we're on to what the negotiation says what is going to be implemented, and that, I think, will make the prime minister's position much easier."

Theresa May is holding a series of meetings with Tory MPs in Downing Street to set out the two options for future customs arrangements proposed by the government.

The CBI employers group, which backs remaining in a full customs union with the EU, warned that the issue needed to be resolved "within days".

"If we don't break the impasse on this customs decision, everybody will be affected - manufacturers, services companies, retailers," said its director Carolyn Fairbairn. "An awful lot hangs on this now."