Thirty Secret Years
- Authors
- Denniston, Robin
- Publisher
- Polperro Heritage Press
- ISBN
- 9780954913755
- Date
- 2009-01-01T00:00:00+00:00
- Size
- 13.08 MB
- Lang
- en
Reveals how Alastair Denniston became head of the British government's cipher-breaking bureau in 1919 and developed a team of fellow experts between the wars by spying on the Soviets. In 1939, he went on to lead a body of secret service men and women to Bletchley Park where they enabled Churchill to avoid defeat.