- Nine of the London raids took place in Lambeth, one in Southwark, one in Hackney and another in Brent
- The operation targeted what are believed to be "the most senior ranking high harm members" of the gang
- So far they have found 300 rocks of crack cocaine, a large amount of heroin and £5,000 in cash
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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.