A new official history of GCHQ, Britain's signals intelligence agency, has claimed that the contribution of Bletchley Park to World War Two is often over-estimated by the public. The book, 'Behind the Enigma', is based on extensive access to top secret GCHQ files and is released on Tuesday.
Author Professor John Ferris of the University of Calgary told the BBC: 'Bletchley is not the war winner that a lot of Brits think it is.' He argues that Nazi Germany initially had the advantage in intelligence and code-breaking due to Britain's poor communication security. While Bletchley's work did hasten victory, it may not have shortened the war by as much as previous estimates claimed.
Professor Ferris suggests that a 'cult of Bletchley' has protected GCHQ's reputation. However, he also notes that GCHQ's contributions were significant in other conflicts, particularly the 1982 Falklands Conflict, where intercepted Argentine messages provided a major advantage. 'I don't think Britain could have won the Falklands conflict without GCHQ,' he said.
The book provides a comprehensive overview of GCHQ from its founding after World War One to the present day, including the impact of Edward Snowden's revelations. It also details the close alliance with the United States and changes in the agency's workforce over time.
