There could be civil unrest in Britain within a fortnight if Britain crashes out of the EU without a deal next March, the head of Amazon UK has warned.

Hard Brexit just sounds more and more terrifying – with previous predictions suggesting grounded flights, supermarkets running out of food and financial chaos.

Doug Gurr, the British manager for Amazon is reported to have made the comments to other business leaders.

Queues of newly-arrived airline passengers line up to await their turn at the UK Border Agency's passport control, 12th August 2008, Heathrow Airport, London, England. Immigration officers deal with each member of the public seeking entry into the United Kingdom but on average, 10 a day are refused entry at this London airport and between 2008 and 2009, 33,100 people were detained at the airport for mainly passport irregularities. The UK Border Agency is responsible for securing the United Kingdom borders and controlling migration in the UK. They manage border control enforcing immigration and customs regulations and also consider applications for permission to enter or stay in the United Kingdom, citizenship and asylum. (Photo by Richard Baker / In Pictures via Getty Images)
Hard Brexit is going to hit us hard, business leaders have predicted (Getty)

He said this was the worst-case outcome which formed part of his contingency planning.

As London and Brussels squared down for an intensive 12 weeks of talks before the deadline for a deal in October, Dominic Raab accused the EU of acting ‘irresponsibly’ and trying to ramp up pressure on the UK with their projections of what the outcome of the UK crashing out of the EU without an agreement would be.

Mr Raab stressed that the UK was serious about about the possibility of a no deal walkaway from the EU.

Prime Minister Theresa May during her speech at the Waterfront Hall in Belfast where she urged the European Union to "evolve" its position on Brexit and not fall back on "unworkable" ideas. PRESS ASSOCIATION Photo. Picture date: Friday July 20, 2018. See PA story POLITICS Brexit. Photo credit should read: Charles McQuillan/PA Wire
Prime Minister Theresa May is under pressure

It means that when the UK cuts all ties with Brussels on March 29 next year at 11pm, all current arrangements with Brussels will end immediately, with nothing to replace them.

This would have disastrous effects on a number of crucial parts of daily life, from the economy to travel, to food and drink, according to the Mail on Sunday.

Straight away we would see ’17 miles of tailbacks’ at the Port of Dover, as they say the ‘two minute delay’ needed to process each lorry would cause huge delays.

Added to this, there have been threats by Irish Prime Minister Leo Varadkar to ban British planes from flying above Ireland, as well as Ryanair chief executive Michael O’Leary claiming: ‘There is not a legal mechanism in which the airlines can operate in a hard Brexit or no deal outcome’.

Even Chancellor Philip Hammond saying that it is ‘theoretically conceivable’ flights could stop straight away.

LONDON, ENGLAND - MARCH 22: Passengers wait at the entrance to the Eurostar at St Pancras Station on March 22, 2016 in London, England. Journeys to Brussels were disrupted, and to terminate in Lille in France after this mornings terrorist attacks in Belgium. European countries vowed to defend democracy against terrorism after blasts at Brussels international airport and at a metro station in the Belgian capital left 26 people dead and many more injured. (Photo by Dan Kitwood/Getty Images)

In the longer term, some experts have claimed Britain will lose up to £400 billion in lost economic growth by 2030.

Cabinet Minister Liam Fox says the EU would face ‘catastrophic economic consequences’ in the event of a no deal Brexit, and Ireland’s economy could collapse by 8%.

Added to this, some estimations have put up to 35,000 jobs in the financial sector to be at risk, as well as about £4 billion of tax revenues – causing chaos in Canary Wharf.

Even more worrying, it’s been claimed that some supermarkets could run out of food within a couple of days, with estimates saying food prices would rise by 20%.

Even alcohol would take a hit, with the price of wines increasing by a quarter, leading to alcohol smuggling.

A spokesman for the Wine and Spirit Trade Association said: ‘There must be mechanisms to allow cross-border trade of wine and spirits the moment we leave the EU.

‘If not, wine and spirits may ‘not get on to the shelves’ and there could be ‘an influx of bootleggers.’

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