The museum is not adjacent to Bletchley; Cambridge is about 40 miles away. You might be thinking of The National Museum of Computing which is on the Bletchley Park campus, but the Centre for Computing History is a different concern entirely.

But they're all worth a visit. :)

There are also a couple of other computer museums open to the public in the UK, one in Swansea, the other in Leicester. I think there's also one in York which you can visit by appointment only.

I remember reading about Core Wars in the Scientific American article back in 84. To say it blew my mind was an understatement. I was 13, Tron had come out in 82, wow what time to start in computing. Anything seemed possible.