I went to this event in August 2016. The venue is indeed very impressive - plenty of room for parking, lots of room inside, excellent cafe and restaurant, and the minerals weren't bad either!
Actually this was the first mineral show at this venue, and all the dealers were in one room (a big room), but there are more rooms available to expand into, and the show has the potential to rival any in the country in a few years time.
Perfect venue at the edge of the beautiful Yorkshire Dales!