Wow, I came across this link while looking at web pages about British tech companies that were active in the early 1950's: English Electric and Marconi, that sort of thing.
This one has got to be a keeper! https://www.leo-computers.org.uk/reports.html
They also link to newer stuff like the Pinkerton lectures: https://conferences.theiet.org/pinkerton/index.cfm?
Originally (eg. last week) the Pinkerton link was broken but I got them to fix it.
Oldest computer?
Re: Oldest computer?
I had never heard of this guy prior to the summer of 2021!
https://en.wikipedia.org/wiki/Konrad_Zuse
https://en.wikipedia.org/wiki/Konrad_Zuse