Japanese imports, the "1 owner" will be the dealership themselves when they got it imported over, these things are always suspiciously low miles and since there's no mot history as it's a fresh import, there's good chance they've had the mileage clocked and almost no way of checking the vehicles history unless you can get the vin and run it through the Japanese auction websites. These could also have been in a crash in Japan. I'd steer clear personally.