I looked at a variety of places in Germany and came across:
Rosier.de
sl-classics.com
Anyone else worth looking at?
I met a gentleman in London running a company called spider veloce who had a few pagoda's restored in Poland.
I saw a few pictures (did not see in the flesh) and the result was pretty amazing. He argued that it was the best place (value for money) to get a ground up restoration done for a pagoda. Apparently, a budget starting with a rolling chassis and engine is in the region of £50-60k in Poland. Would be at least double in the uk. Any views on this?