The women returned home last month, and claim they're still having to take antidepressants to cope.
Consular staff, both in London and China, assisted the detainees and their families in the UK, to the best of their abilities.
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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.