The real history of MI5 during the era of the Cold War, the IRA & international terrorism. 'PO Box 500, London W2'; the nondescript address from behind which one of the world's most famous Secret Services hid: MI5. This book, based on previously secret sources, lifts the lid on Britain's Security Service. Despite an outstanding war record against German espionage, MI5 failed to prevent Soviet agents like Anthony Blunt penetrating the heart of the...