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Anti-Brexit campaigners today claimed fresh warnings over the risks of a no-deal exit showed the “wartime” impact it would have on the UK.

Britain faces shortages of fuel, food and medicine, a three-month meltdown at ports, a hard border with Ireland and rising costs in social care under a no-deal Brexit , official files warn. The Operation Yellowhammer briefing outlines the most likely impacts of leaving without a pact rather than the worst-case scenario.

It came as the Tories’ Brexit civil war deepened as Boris Johnson launched an unprecedented attack on MPs bidding to stop a no-deal departure.

The Prime Minister claimed it was “as plain as a pikestaff that Brussels - or the EU 27 - will simply not compromise as long as they believe there is the faintest possibility that Parliament can block Brexit on 31 October”.

(Image: Getty)

Reports today highlighted latest Whitehall warnings of the possible consequences on various sectors of leaving the EU without a deal.

9 stark warnings on a No Deal Brexit in leaked Operation Yellowhammer documents

1. Fuel - Petrol supplies could be disrupted, two oil refineries could shut and 2,00 workers could lose their jobs.

2. Northern Ireland - Avoiding a hard border is likely to be “unsustainable” with a new frontier all but inevitable.

3. Gibraltar - 15,000 workers who cross the border from Spain every day face delays of more than four hours “at least for a few months”.

4. Ports - Up to 85% of lorries using Channel ports may not be ready for French customs checks.

(Image: PA)

5. Food - Some supplies of fresh food will fall with hundreds of thousands of customers affected by water supplies.

6. Drugs - Vital medicines could rot on unrefrigerated lorries stuck at ports, with disruption lasting up to six months.

7. Border- Passengers travelling to and from the EU could be subject to more immigration checks.

8. Fishing - Nearly 300 foreign boats could be illegally fishing in UK waters, risking clashes at sea.

9. Care - The “fragile” care industry could be hit by rising inflation and small operators could collapse within three months.

Lib Dem Brexit spokesman Tom Brake said: “Operation Yellowhammer reveals the truth of a no-deal Brexit.

(Image: PA)

“It would have wartime implications, in peacetime, all of them self-inflicted.

“People will be horrified that Boris Johnson and the Conservatives are willing to pursue a plan that will lead to shortages of medicines, food and fuel. This is a far cry from the promises Boris Johnson made in the referendum campaign.

“Brexit has become a national humiliation.”

Remain campaigner Gina Miller told Sky News: “How many more torrents of assessments do you need to realise this is putting people’s lives in danger?”

But Business Minister Kwasi Kwarteng claimed: “There is a lot of scaremongering around.”