The history of the British intelligence services is an inexhaustible topic, and the relationship of the latter with the fate and activities of British politicians with the reputation of world leaders (which, undoubtedly, includes W. Churchill) is also informative and instructive. For the reader of this book, it may be “seditious » the arguments of English researchers A. Wenning, K. Andrew, J. Morton, D. Stafford (whose generalizations are presented for the first time in Russian) will appear that for Churchill (who spent almost the entire first half of the 20th century at the helm of power) were decisive their own ideas about the role and importance of intelligence services in the state, radically different from those that existed, for example, in Russia (both pre-Soviet, Soviet and even post-Soviet) or in the USA. And perhaps that is why no one has ever seriously challenged either the effectiveness of British intelligence, or the professionalism of its employees, or the lack of political engagement. And all this is proven by the documents presented in the book - their analysis and generalization. At the same time, the history of the British intelligence services during the reign of the country by Churchill is rich in events and names, thanks to which Britain “ruled the seas” for centuries. The author of the book convincingly argues that the basic principles of the activities of the British intelligence services - nurtured by Churchill - remain unshakable today, which demonstrates that tradition and common sense are what “rule the world.” And this book is about all of this. For a wide range of readers.