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GCHQ Puzzle Book 2

Hardback, 18/10/2018, €17.55
The brain-busting follow up from the UK's finest code-breakers and puzzle solvers at GCHQ.

Behind the Enigma: Authorised History of GCHQ, Britain's Secret Cyber Intelligence Agency

Paperback, 17/10/2019, €20.30

GCHQ Qiizbbook

Paperback, 20/10/2016, €17.55