WI: The black Death dosn't hit the British Isles?

What if by some miracle the Black Death doesn't spread to the British Isles (or at least dosn't spread on as much a largescale in mainland europe) and dies out before they can make any stupid decisions like, say, invading France before it's burned itself out?

With Britain's, and more importantly England's population not being culled like in Europe, what affects could their be?
 
It might butterfly away (or at least have a significant impact on) the Peasants' Revolt, since that was partly caused by socio-economic and political tensions resulting from the Black Death.
 
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