While other books have speculated on the history and nature of Britain's intelligence services, this is the first to tell the story through the documents themselves. Only ten years ago access to these original sources would have been impossible, but now experts Twigge, Hampshire and Macklin draw on the spies' and spymasters' own words from the National Archives' unique intelligence files - including the very latest remarkable releases from MI5. Historical narrative is interwoven with colourful tales from the past that highlight some of the greatest successes - and failures - along the way, as well as the motives and machinations of those responsible for them. And readers who want to explore sources for themselves are given all the guidance they need. As the Iraq War and its aftermath bring the intelligence profession back into the spotlight, "British Intelligence" is compelling reading for anyone interested in the shadowy world of 20th-century espionage.

Tells the story of Britain's intelligence services through the documents themselves. This book draws on the spies' and spymasters' own words from the National Archives' unique intelligence files - including the remarkable releases from MI5. It interweaves historical narrative with colourful tales that highlight some of the greatest successes.

Introduction; 1. Domestic Intelligence - MI5; 2. International Intelligence; 3. The Special Operations Executive; 4. Military Intelligence; 5. Naval Intelligence; 6. Air and Satellite Intelligence; 7. Scientific Intelligence; 8. Communications Intelligence; Conclusion: Intelligence in a Changing World