Airports have been forced to cancel dozens of flights as ice and thick fog descended on the UK overnight.
- Heathrow Airport had around 60 cancellations affecting incoming and outgoing flights throughout the day, as well as many more delays.
- London City Airport also cancelled six early morning flights to European cities, including Edinburgh, and reported a number of delays on its arrivals board.
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.