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:
- There was congestion on a number of major road routes, while a section of the A1(M) between junctions 39 and 40 in Yorkshire was closed.
- On the railways, overhead wire problems caused 50-minute delays in the rush-hour between Bedford and Luton, while a broken-down train at Watford Junction in Hertfordshire also caused hold-ups.
- An electrical supply problem led to delays to train services between Seaford and Lewes in East Sussex and a signalling problem caused hold-ups to services in and out of Brighton.
- In Scotland, a broken-down train at Bathgate caused to delays between Edinburgh and Airdrie.
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.