Dozens of flights out of the UK’s largest airport have been cancelled as freezing fog causes disruption to transport networks. Forecasters warned that much of south-eastern England would be hit by travel delays as a patch of cold weather moves in.
The Met Office said an area stretching from London almost to the Humber was at risk and issued a yellow warning – the least severe. Parts of south-eastern England, including most of East Anglia and the home counties, as well as much of the east Midlands, were likely to be affected, they said.