Thick fog disrupts travel across much of England, Wales and Northern Ireland

Flights at Heathrow Airport, London's largest, were disrupted on Monday, 9 November 2026, as thick fog spread across much of southern England, eastern Wales and most of Northern Ireland.

The Met Office, the UK's national weather service, issued yellow weather warnings for Monday. Yellow warnings flag the chance of disruption. They covered most of England south of Manchester, with the exception of Devon and Cornwall, as well as eastern Wales, including Cardiff, and most of Northern Ireland, except Belfast. In some warned areas, visibility could fall to 50 metres or less, and forecasters warned of possible delays to bus and train services and a chance of flight cancellations. The Met Office's warnings page described the hazard as fog leading to difficult travel conditions and possible delays, and listed County Antrim among the affected areas.

The fog has already caused serious problems on the roads. On Saturday evening, a crash involving 30 vehicles in foggy conditions closed the M20 motorway in Kent between junctions 8 and 9, near Maidstone, according to The Guardian. Two people were seriously injured.

Forecasts for the rest of the week point to some relief in the south, though not everywhere. The Met Office said fog was expected to slowly lift through the morning, with some patches lingering into early afternoon across parts of central England and Wales. On Tuesday, the fog-affected area was expected to shrink to the Midlands, Staffordshire and Cheshire in the west, and to most of Yorkshire, Lincolnshire and East Anglia, the region of eastern England, in the east.

Earlier, the Met Office had said daytime temperatures should generally be near normal for November, though places where fog and low cloud linger could feel colder.