Fog warnings across UK regions raised concerns over road and air travel

The Guardian reported on 9 November 2026 that thick fog was expected across southern England, eastern Wales and much of Northern Ireland early that week. Yellow warnings covered most of England south of Manchester, excluding Devon and Cornwall, alongside parts of Wales and Northern Ireland. Forecasters said visibility could fall to 50 metres or less, potentially delaying buses and trains and causing flight cancellations.

Flights at Heathrow were disrupted on Monday, and the airport urged passengers to check with airlines before travelling. On Saturday evening, a 30-vehicle incident in foggy conditions closed the M20 between junctions eight and nine near Maidstone, leaving two people seriously injured. The forecast area was expected to narrow on Tuesday.

Met Office meteorologist Niamh Murray attributed the fog to long nights, clear skies and light winds, with colder air closer to saturation. She said sub-zero temperatures could make it slow to clear. AA president Edmund King warned that following another vehicle’s rear lights could create a misleading sense of safety.