Thick fog causes travel disruption with flights delayed

Thick fog has caused flight chaos for air passengers and also affected ferry services. The poor visibility led to 40 flights being cancelled at Heathrow, while at London City Airport nearly every early-morning service was delayed or cancelled.

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Police helicopter's stunning images of London skies

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:

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