Kevin, a member of CAMRA and the host of our December tasting, does a LOT with cider. He would probably be your best bet to answer cider questions. I know he gets cider straight from local presses during harvest time, but he would have to provide you the details on that.
Jamey found this post from Kevin about cider on another forum. I had to post it here, just for the first picture alone . . .
Cheers, Kevin, your cider rocks!
http://www.homebrewtalk.com/f32/results-juice-yeast-sugar-experiments-83060/