- 22 updates
Train travel difficulties are continuing this morning.
Overhead wire problems between Northampton and Rugby meant buses replaced trains between Northampton and Coventry, while an hourly train shuttle was running between Coventry and Birmingham New Street, with journey times in the area extended by up to an hour.
There were also overhead wire problems affecting services in and out of London's King's Cross station.
The bad weather disrupted services at Christ's Hospital in Sussex, with trains between Barnham and Horsham delayed.
A broken-down train at Melton Mowbray in Leicestershire led to delays of up to 45 minutes between Leicester and Peterborough.
Heathrow Airport has seen queues of passengers waiting to leave as the freezing fog has led to around 60-70 flights being cancelled.
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.
Gatwick Airport has said that there is no disruption to flights due to the fog, despite notices on its website saying many flights had departed later than scheduled:
Passengers in Terminal 5 at Heathrow Airport have bedded down to wait, after many flights were cancelled or delayed due to fog.
London City Airport have tweeted help from different airlines for passengers who may have had their flights cancelled, after at least twenty departures were cancelled and many more were 'indefinitely delayed,' you can check flight details for both departures and arrivals here.
Latest ITV News reports
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.