Thanks, guys
Unfortunately, I'm just after a case, not a built system. It would seem that you pay quite a bit extra for these nice-looking units and, unless I'm missing something, they come with stuff we neither need nor want (HDD, OS for example).
Now, if these were available in a diskless format, I might be willing to go down that route, but at the moment I'm seeing if I can knock together an MD for around teh £100 mark. Am I deluded?