To echo what others have said:
* you will have around an hour and a half at the museum. I would say
that's about the right ballpark.
* there are 2 _entirely separate_ museums on the Bletchley Park site:
** Bletchley Park:
https://www.bletchleypark.org.uk/
** The National Museum of Computing:
https://www.tnmoc.org/
The BP Museum is just a museum and this largely devoid of anything of
tech interest.
TNMOC has the interesting technology, such as Colossus and so on. It
happens to be situated on the site of BP and in some BP huts and
buildings.
I have some hand written code for the Elliot 802 and I spoke with Peter
Onion who runs the Elliot 803 machine, he is going to meet me there. So
all I need is time enough for that and my focus is the Elliot 802, so I can
drop off my code in person. Seems like a lot but I just want to be sure to
see the Elliot 803 while I am around.
Bill