Commuters across large parts of Britain are facing significant travel disruption this morning after the Met Office issued a warning for dense, lingering fog. The forecaster has alerted the public to expect slower journey times and potential cancellations to bus, train, and air services.
Where and When the Fog Will Strike
The weather warning, active until around 10am on Wednesday, 3rd December 2025, covers a wide swathe of the country. Forecasters predict the thickest fog will blanket the Home Counties and the Midlands, with visibility dropping below 100 metres in some rural areas. The fog is expected to slowly lift and clear through the morning.
The official alert encompasses multiple regions, including the East Midlands, East of England, London, the South East, South West, Wales, and the West Midlands. A full list of affected counties has been published by the Met Office.
Transport Networks Braced for Impact
All major forms of transport are likely to be affected. On the roads, driving conditions are described as treacherous, particularly on rural routes. Major motorways such as the M40, M5, and M1 could prove challenging during the morning rush hour.
The Met Office has issued specific advice for drivers, stating: "Give yourself the best chance of avoiding delays by checking road conditions if driving, leaving extra journey time, or amending plans if necessary." They also urge motorists to ensure they know how to use their fog lights and to check they are working before setting off.
Air travel is also facing disruption. While Birmingham Airport, Bristol Airport, and East Midlands Airport sit just outside the formal warning zone, they are on high alert as the widespread fog is feared to severely reduce visibility, potentially causing delays and cancellations.
What Comes After the Fog Clears?
Once the fog dissipates, rain is forecast to follow across many regions. The western coast of Wales, along with parts of Lancashire and Cumbria, are expected to be particularly wet this afternoon.
Temperatures will also take a dip compared to Tuesday. While the mercury peaked at 12.6C in Slough, Berkshire yesterday, highs in the Southeast of England today are predicted to reach only 8C or 9C.
Travel operators are advising passengers to check for live updates before commencing their journeys. The Met Office concludes its warning by reminding the public: "Bus and train services, as well as flights and ferry travel, may also be affected; check for updates from your travel company, and follow their advice."
