Temperatures could fall to minus 10 to minus 15 Celsius across parts of the UK in another cold night expected for the UK.
Storm Darcy continues to cause disruption, after the UK recorded the coldest night of the winter so far.
A number of COVID vaccination centres remain closed in the east of England, while more than 380 schools in Norfolk have been forced to shut to children of key workers.
The Met Office has warned temperatures could drop further overnight and more warnings are in place.
