Behind the Enigma: The Authorised History of GCHQ, Britain’s Secret Cyber-Intelligence Agency: Audiobook
According to The Books Insider's catalog data, the Behind the Enigma: The Authorised History of GCHQ, Britain’s Secret Cyber-Intelligence Agency audiobook runs 30.5 hours unabridged, narrated by Charles Armstrong (about 20.4 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 30.5 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 61 days |
| 1 hour / day | 31 days |
| 2 hours / day | 16 days |
| 1 hour / day at 1.5× | 21 days |
You'll finish in – by –
Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.
What our data says
- At 30.5 hours, it runs longer than 99% of the 3,272 Europe audiobooks in our catalog.
More narrated by Charles Armstrong
Charles Armstrong narrates 111 unabridged audiobooks in our catalog, 1,099 hours in all.
About as long, on the Europe shelf
38 Europe audiobooks in our catalog run within 10% of this length. The most popular on the store:
Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.
About this listen
Behind the Enigma: The Authorised History of GCHQ, Britain’s Secret Cyber-Intelligence Agency is an audiobook by John Ferris: a 30.5-hour unabridged recording, read by Charles Armstrong, released October 20, 2020, on the Europe shelf.
The listen at a glance
- Length
- 30.5 hrs
- Narrated by
- Charles Armstrong
- Released
- October 20, 2020
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Europe
- ISBN
- 9781526616999
How to listen to Behind the Enigma: The Authorised History of GCHQ, Britain’s Secret Cyber-Intelligence Agency free
New members at audiobooks.com get three free audiobooks with the trial.
Separately, the store's catalog carries more than 10,000 audiobooks that are always free to stream.
Start listening freeQuestions listeners ask
How long is the Behind the Enigma: The Authorised History of GCHQ, Britain’s Secret Cyber-Intelligence Agency audiobook?
Behind the Enigma: The Authorised History of GCHQ, Britain’s Secret Cyber-Intelligence Agency runs 30.5 hours unabridged. At 1.5× speed that drops to roughly 20.4 hours.
Is the Behind the Enigma: The Authorised History of GCHQ, Britain’s Secret Cyber-Intelligence Agency audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Behind the Enigma: The Authorised History of GCHQ, Britain’s Secret Cyber-Intelligence Agency?
Behind the Enigma: The Authorised History of GCHQ, Britain’s Secret Cyber-Intelligence Agency is narrated by Charles Armstrong.
Is Behind the Enigma: The Authorised History of GCHQ, Britain’s Secret Cyber-Intelligence Agency worth listening to at 1.5× speed?
At 1.5× you'd finish in about 20.4 hours, saving 10.2 hours.