So, randomly on a whim I decided to get hold of the first issue of Hack Circus (http://hackcircus.com/). There's a brief section about the Museum of Computing History in Cambridge, and then the guy who runs the museum contributed a one page piece about the 464. It wasn't particularly technical or anything, just nostalgic, but nice he chose the CPC over the other home computers of the day and gave some good justifications for liking it.
BTW, this isn't really a computer magazine, it's more of a hackspace/makerspace thing.
I didn't know that museum was there. I'm often in that area when I'm forced to go to Cambridge (like I have to on the 12th of this month) so I may check it out if I have the time.
No idea if it's any good, but here's the link with address: Visiting - Computing History (http://www.computinghistory.org.uk/pages/28568/Visiting/)