i have imported 2 iinto the uk theres no big problems in opperating on the n reg
you need to register it in a us trust
you realy need to pay the vat
you can legally fly it on your uk licence in the uk
you will need a faa annual inspection[no probs here]
thats the short of it
you could fly it from the docks both mine have
if you want email me for tel no and we will speak