I've looked at it a bit more. All the smaller sites are just place holders for lesser important topics or for streaming BBC shows. Sure the torrent saves some user comments (not all) and images (not all, some links are broken) but there's not really a lot of meat since that content is periphery.
I'd say that most of the valuable content is still stored on the BBC servers, in the DB where it's being served from right now. I'm sure they're going to repurpose the good stuff if they haven't already. I have an acquaintance who works in the web department at the CBC. They've implemented a pretty neat CMS to repurpose their older media to work with their latest site. I can see the BBC doing the same.
I'd say that most of the valuable content is still stored on the BBC servers, in the DB where it's being served from right now. I'm sure they're going to repurpose the good stuff if they haven't already. I have an acquaintance who works in the web department at the CBC. They've implemented a pretty neat CMS to repurpose their older media to work with their latest site. I can see the BBC doing the same.