Freezing fog is causing disruption at London's airports this morning. There have been several cancellations at Heathrow and London City Airports. Passengers are advised to contact their airlines to check the status of their flights.
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John Cantlie, who worked for a number of Fleet Street newspapers, is thought to have been taken hostage in November 2012.
The union published a 'no show' league table for last year the worst offenders for cancellations.
Zalkalns was jailed in his native Latvia for eight years in 1988 after he admitted killing his wife with a piece of electrical equipment.