(FILE) A file photograph showing British double agent George Blake signing one of his books after its official presentation in Moscow, Russia, 28 June 2001. Reports state on 06 November 2012 that George Blake prepares to celebrate his 90th birthday near Moscow on 11 November 2012. Blake, defected to the Soviet Union in 1966 after he was helped by accomplices to escape from Wormwood Scrubs prison in London, was responsible for betraying up to 40 British secret service MI6 agents in Eastern Europe and the Middle East, some of whom were executed by the Soviets ANSA/SERGEI CHIRIKOV