Six Bulgarians convicted for belonging to a Russian espionage cell were given jail terms of up to 10 years by a U.K. court.

Russian spy ring operating on ‘industrial scale’ from British seaside guesthouse jailed for total of 50 years - The ...

The Old Bailey heard that the spy ring was directed by alleged Russian agent Jan Marsalek, an Austrian businessman.

The cell’s operations are believed to be among the “largest and most complex” enemy operations ever uncovered on British soil ...