I can second this. The Museum of Computing was much more interesting to me than Bletchley Park. The working replicas of electro-mechanical computers were terrif

I can second this. The Museum of Computing was much more interesting to me than Bletchley Park. The working replicas of electro-mechanical computers were terrific, and the guides/operators there had a wealth of interesting knowledge and anecdotes. I learned much more about the use of these machines for code breaking there than I did at Bletchley Park.