For those who are interested, the LEAF and eNV200 are now included in the SEVS list (Specialist and Enthusiast Vehicles) and are able to be imported based upon it using 0% petrol and 100% electric propulsion.
For those who are interested to purchase one of these vehicles, there are numerous car importers who are able to source these cars from the Japanese auctions and look after the import and compliance process so there is pretty much a 'landed and complied' price and then all you'll have to do is to get it registered and insured.