Really interesting material on this module so far. Just watched the video 'Computers through the generations' as part of Block 1 Part 2.
I hadn’t realised all the Colossus machines were destroyed after World War II - how sad, and what an amazing achievement to build a replica. Loved the bit about the Wrens drying their smalls over the top of Colossus because it emitted so much heat.
Looks like there are lots of video clips available on YouTube about the history of computing, e.g. this one. The woman at about 0:36 in seems to be demonstrating the very real possibility of drowning in punched tape.