Any idea on a good site to order this rice from? How does amazon.co.jp handle int'l orders? Same as with .com and .co.uk? Oddly I can't recall ordering anything that way before.

amazon.co.jp ships everything overnight, which is expensive. Or at least I haven't found a way to select another shipping method. There are probably specialty importers you could try searching.

http://www.japancentre.com/items/3250

5 pound delivery charge to UK

Thanks for the tips. There's also Rakuten, seems cheapest.