- 6 updates
Officers on board one of the Metropolitan police's helicopters has taken these stunning pictures of London today as parts of the UK are hit by fog:
Thick fog has caused delays for thousands air passengers. Poor visibility led to 40 flights being cancelled at Heathrow airport. At London City Airport in Docklands nearly every early-morning service was either delayed or cancelled.
British Airways has tweeted that fog is causing delays and some cancellations at Heathrow Airport.