Historical Dictionary of British Intelligence (Historical Dictionaries of Intelligence and Counterintelligence, No. 1)

the long version

"The Historical Dictionary of British Intelligence offers insight into the history and operations of British Intelligence through its more than 1,800 entries on a vast and varied cast of characters (spies and their handles, moles and defectors, political leaders, and top brass), techniques and jargon, offices and organizations, agencies, operations (including double-agent and deception campaigns), and events. This historical dictionary, featuring thirty-nine photographs, an extensive chronology, and a comprehensive bibliography, contains the most up-to-date declassified material but is written in an easy-to-read style, perfect for professional and general readers alike."--Jacket.