I think the good people of the Gentleman's Emporium, a cracking good site though it is, don't ship outside of the US at the moment, which is a little bit naff.
Personally, I've always used the Dark Angel (
http://www.thedarkangel.co.uk/onlinestore.php) for this sort of thing. It's a UK company that might be a little pricey but you are paying for very good quality items. And also they deliver pretty quicksharp!