The Bletchley Circle....a BBC film series follows 4 clerks at the Bletchley facility during WWII and afterwards.
The intro has film clips of the machine in operation.
(Available on Netflix)
32 posted on 11/20/2014 5:34:22 PM PST by spokeshave
(He has erected a multitude of New Offices, and sent hither swarms of Officers to harass our people,)