fog heathrow
Tail fins of British Airways aircraft are seen through thick fog at Heathrow AirportGetty

A second day of heavy fog in the UK is set to cause the cancellation of dozens of flights today (2 November). Around 45 flights from Heathrow have been "pre-cancelled" after the Met Office issued a yellow warning for fog for most of England and east Wales.

Around five flights have already been cancelled at Manchester Airport, with Gatwick, Leeds, Bradford, and Liverpool airports also warning passengers to expect some disruption. Passengers are being advised to check the status of their flights before they travel.

A spokesperson for Heathrow airport said: "We've got extra passenger ambassadors in the terminals to provide assistance for those travelling today. Once again we would like to apologise for the disruption."

A British Airways spokesperson confirmed they are experiencing some disruption on their scheduled flights: "The airport authorities and air traffic control have again requested airlines to reduce their schedules on Monday to maintain safety. If your flight has been cancelled please do not travel to the airport."

Motorists are also being warned to take care while on the roads as the thick fog could see visibility reduced to around 100 yards (91 metres). A Highway Road spokesperson added: "Road users will need plenty of extra time to do their usual commute, especially as the fog is expected to lift very slowly during the morning."

A Met Office spokesperson said: "Areas of fog are expected to form during Sunday (1 November) night becoming widespread and dense in places by Monday morning. Travel may be impacted by poor visibility, with some minor disruption expected.

"A slack, moist airmass lying across much of England will allow fog to readily form again on Sunday night, reducing visibility to less than 100m at times. Fog will slowly lift and clear from many places through Monday."