Firstly we did the Bletchley Park part of the complex. Definitely recommend the free guided tour, which takes about 1hr30 all in. The tour just does the outside, complete with explanations of all the various complexes. Inside was free to roam. There are also some demonstrations and other indoor activities (eg the Phoenix electromechanical computer used to crack the Enigma).
Following the Bletchley Park part, we took a trip around the National Museum of Computing, which is on the same site, but costs an extra £5 entry.
The first section was the rebuild of a fully working Colossus computer, rebuilt to the same basic spec (90%+ identical) of the original machines. On a hot summer's day, and the airconditioning was one small window that was open, and those valves generate a lot of heat (so definitely take a bottle of water!).
The rest of the museum is really just a massive collection of computing nostalgia, from calculators, mobile phones, huge archaic business hardware, pretty much every home computer from the ZX80 to the Raspberry Pi, and every home games console too. Many are powered, still running, and you can play or work on them too. My first ever school computer (RML 380Z) and first ever home computer (Amstrad CPC 464), unsurprisingly, were on display at least once each.
The following day, 2 of us also went to the MRC rocket launch not far from Twycross Zoo. Don't seem to have any photos of that. It seemed to be a bit of a jinx day though - several rockets lost to the crops, abnormal flights, and a BBQ that just wouldn't cook sausages! Thankfully there were a couple of camp stoves, and Malcolm always had his frying pan, which came in handy!
The rest of the weekend's photos can be found here.
