A brand new edition of this fascinating book on M15 intelligence operations. Updated and expanded with brand new material on the war on Terrorism such as insider reports on the Bali bombing, M15's tragic lack on intelligence on September 11th and how it is now regarded as a 'massive' intelligence failure. Both authors write for the broadsheets, are well-connected and are leading experts in the field. Defending the Realm provides a rare insight into the secret world of M15 and breaks new ground in revealing its covert techniques - from phone-tapping and mail tampering, to the running of agents and surveillance operations. This new edition also provides a profile of M15's new female director, Hon. Eliza Manningham-Buller.