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I was thinking the film Escape From New York. I reckon it could work. Fence off Wales and put all the dregs of society in there (sorry Wales, but you have way more landmass than any amount of sheep could fill).
They have their own little society in there, with tribal warfare,etc. It's like Big brother, but not crap.
They have their own little society in there, with tribal warfare,etc. It's like Big brother, but not crap.