Robert White was a Bessa stockist/distributor in the UK but hasn't had bodies in stock for some time now. With the cease in production the vast majority of new stock appears to have been bought up by now. My R3A came from Aperture in mint/boxed condition two years ago and they've only had a single Bessa L for sale in the time since I got it.
You'll be hard pushed to find an official supplier or bricks and mortar shop with true new stock in Europe. I'd say your best bet is to follow some of the suggestions above and try to arrange postage from the US or Japan, search around ebay etc, or else have the patience of a saint and hope that one comes up for sale nearby.
Good luck with the search.