Well, if we're talking money-no-object, the same dissection room told us that the doyenne amongst suppliers of medical models and specimens is Adam Rouilly:
http://www.adam-rouilly.co.uk
They were way beyond our price bracket (we were looking to buy a skeleton as a birthday present for a fellow student but sadly she declined as we had been very much looking forward to wheeling it into her party which was full of City people
)