Freezing fog grounds flights
Airports have been forced to cancel dozens of flights as ice and thick fog descended on the UK overnight.
Airports have been forced to cancel dozens of flights as ice and thick fog descended on the UK overnight.
While many flights out of London airports have been delayed or cancelled the cold weather has also caused travel disruption on the roads and railways:
See the Highways Agency and National Rail Enquiries websites for more details.
Clear skies and light winds are a recipe for fog to develop, so allow extra time to defrost your car and check before you travel.
It's another bitterly cold day today. It's all down to where the air originates from - and today's can be traced back to Russia.