Dense fog threatens travel delays across parts of England, Wales and Northern Ireland

Dense fog is expected to affect parts of England, Wales and Northern Ireland early this week, with forecasters warning of travel delays. The conditions have already disrupted flights at Heathrow and contributed to a serious multi-vehicle incident in Kent, highlighting the risks for commuters and drivers.

Yellow warnings were issued for Monday across much of England south of Manchester, eastern Wales and most of Northern Ireland; visibility could fall to 50 metres or less, with bus and train delays and flight cancellations possible. The affected area is expected to narrow on Tuesday, while the Met Office says clear skies, light winds and long autumn nights are helping fog form and may make it slow to clear.