MILLION pound nuclear shelters are lying underneath our feet in Britain ready and waiting for World War 3 and the Daily Star Online can reveal exactly where they are.

The threat of a nuke war involving North Korea is higher than ever before after its tyrant leader Kim Jong-un tested his first intercontinental ballistic missile this week.

So if and when the time comes, and the UK finds itself in the firing line, thousands of Brits will be desperately cramming into nuclear fallout shelters across the country.

But the bad news is the numbers of active shelters fall into just single figures. And worse still, one of the just four shelters Daily Star Online have come across will only be reserved for the Prime Minister.

A cold war expert also revealed to us there are many more shelters across Britain that are being kept hidden from society, and has revealed some of their secret locations.

And on top of all of that, despite the already little protection, Nick Catford, the author of Cold War Bunkers, has a chilling warning for Daily Star Online readers: We are not prepared for a nuclear war.

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Tubby tyrant Kim Jong-un gloats as the world reacts to the news of his successful test of an intercontinental ballistic missile. As Trump took to Twitter to slam the secretive state, the world watches in fear: is this how WW3 starts?

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Kim Jong-un watches as the missile launches

The country currently houses four known nuke bunkers, but once was a hotbed for dozens of them which were built for the Cold War, before being turned into museums, sold off, or simply decommissioned.

Heres a list of the shelters as listed by Civil Defence Today:

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Widen the net and include decommissioned and transformed bunkers, then these 14 shelters would have once been our getaway locations:

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Photographs have emerged of a forgotten Cold War bunker - complete with fascinating instructions of what to do in event of a nuclear attack. The hidden relic deep in the heart of the East Anglian countryside was built in 1958 when tensions between the West and the Soviet Union were growing towards their height.

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Although the public could flee into some of the active bunkers in the event of an all-out war involving the likes of Russia, North Korea and USA, they werent actually built for us, Cold War Bunkers writer Nick told Daily Star Online.

Provision was never made for the people here, ever, he told us. The Government, military and services were prepared for themselves.

But in other countries there was. In Sweden for example during the cold war, when you had a new build you would have to have fallout shelters included, but we never had that.

Some people built their own fallout shelters there are some fallout shelters in houses but they are very few and far between.

He added: (If there was a nuclear war) theres very little we could do.

In the Cold War the local and national government all had bunkers and fall out shelters and the main reason for those was so that in the event of a nuclear attack they could keep services running.

Nick revealed to Daily Star Online that besides the Government-commissioned bunkers, there are actually secret shelters lying underneath properties across the country that are kept hidden from the public.

During the threat of Cold War some people built their own bunkers under their homes, he said.

There was a company in Kent that would build shelters to order in your garden.

There was this one man in Brixham, Devon who got a bit paranoid in the cold war, and built his own house with a shelter underneath it.

I stayed there the night once, and hed fitted it out in similar equipment to the Government!

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Hes got plenty of food, water, hes got the generator. He is quite well provided for.

But for how long? Everything is going to run out, so youve got to come out at some time.

All the tins (of food) there I remember were dated to the 1980s, so they never got replaced!

The locations of the secret bunkers revealed to us are mainly in villages, and include Pluckily in Kent, Balcombe in Sussex, South Godstone in Surrey and Brixton in Devon.

But if anyone is now thinking about building their own nuke bunker, Nick has a word of warning: The cost is colossal.

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Since 2008, photographer Eric Lafforgue ventured to North Korea six times. Thanks to digital memory cards, he was able to save photos that was forbidden to take inside the segregated state

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Taking pictures in the DMZ is easy, but if you come too close to the soldiers, they stop you

He told us: When the UK started its bunker building programme in the 1950s, at the start of the Cold War, we put all our radar stations in protected bunkers and just building the bunkers for the radar stations virtually bankrupted the country.

We cant afford it, and anyway, no bunker that we could build would withstand a direct hit.

They need blast protection, which would be virtually impossible to provide.

You then need filtration so if your air runs out, any air that you bring from the surface is clean from radiation. This would be horrendously expensive.

You would also need a supply of fuel for running a generator and a water supply - it is all just so expensive and the idea of the Government building shelters isnt going to happen.

But dont be downhearted, as Nick believes there is only a small chance of a nuclear bomb going off in Britain.

There is no threat whatsoever from the Soviets. I dont think there is a threat from North Korea either, he said.

The only slight worry would be if a terrorist organisation got hold of something. It would be a small, probably quite dirty bomb. But I dont think you could prepare for something like that.

If anyone is still concerned about not having a bunker, Nick told Daily Star Online: I dont think we have anything to worry about. I have a bunker, but I wont be running to it! I wouldnt want to be stuck down in that.

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REVEALED: Nuke bunkers in UK that YOU could hide in if WW3 explodes - Daily Star