Arctic blast set to sweep through UK, bringing temperatures as low as -15C

Persistent band of snow' likely across Scotland, Northern Ireland and parts of northern England and Wales

The UK is set to experience its coldest night of the winter season this week, thanks to an Arctic blast that is travelling from the north to the south.

Temperatures are expected to be 5C-6C lower than usual for this time of year, falling to -15C in some areas.