He escaped from prison, fled to Russia and " unlike the posh Cambridge spies " didn't end up a miserable alcoholic. The revival of Cell Mates, the play about George Blake's betrayal of Britain, couldn't be more timelyWhen Simon Gray's Cell Mates had its stage debut, 22 years ago, it became almost instantly famous not for either of its characters " the spy George Blake and his accomplice Sean Bourke " but for its cast…
