Dense fog disrupts air traffic in London

Thick fog is causing problems for air traffic at airports in the United Kingdom, one of the year's most hectic flying weekends.

Flights were delayed by up to three, four hours on Friday, and the problems have continued on Saturday. Both Gatwick and Heathrow have been affected, and reports of disruptions are also coming from other areas.

Passengers are advised to expect longer travel times and drivers to be extra cautious.

According to the country's meteorological institute Met Office, visibility may be reduced to just 100 meters in some parts of the country. The weather is expected to clear up on Sunday.