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Why IS it so cold in Britain?

Why IS it so cold? The weather system that is causing the ‘Troll from Trondheim’ – and how it compares to the worst weather EVER – is revealed in SHIVALI BEST’S video rundown

As Britain is gripped by another cold blast, we explain the weather phenomenon that’s causing it and how it relates to previous winters.  

This December is seeing the coldest period in Britain for more than ten years after an unusually mild Autumn. 

But it is far from the most extreme winter weather the UK has seen, as our video guide shows.