I will go the English way. Which means after I finished the project I have to return the completed car to Lister Bell. They will arrange English registration. I will import the car to the Netherlands. Because England in (still) in the European Union the Dutch "RDW" have to accept the car. It could be the same in Italy. However you will have to hurry because it seems the Brexit will go on within 2 years. Nobody can predict what will be possible after the Brexit.