Ginkgo plantation: help wanted

I am interested in the possibiltiy of growing ginkgo for medicinal purposes in South Devon , UK. I am considering a small plantation, possibly 20 - 30 acres.
This is the very first stage of my research, and any information people think may be relevant would be gratefully recieved. In particular I would like information on climate and growing conditions, working practices, possible markets for produce, potential yield and income. Many thanks.
Question by Tim Hayford.