Video: The Colossus WWII codebreaking machine

Exclusive - an insider's snapshot of Bletchley Park's secret war hero

Bletchley Park was the secret home to Britain's top codebreakers during World War II. The base is now home to the fledgling National Museum of Computing, which features a rebuild of the world's first electronic codebreaking computer - Colossus.

In the first of this exclusive video series, silicon.com takes you behind the scenes at the museum for a look at the evolution of the modern computer, starting with Colossus and a demonstration by the man who rebuilt it - computer expert and former spy Tony Sale.

See exclusive photos from Colossus here…