First up, Dixon Miniatures:
The latter pic is wonderfully titled "Dai Oni in savage mood brandishing mallets". They have an enormous range of figures, both military and civilian, as well as fantasy. The only con is that they are quite squat and stocky compared to more "modern" ranges. Otherwise, this is a real treasure trove of variety.
Now The Assault Group:
Another large range, with a great mix of nationalities (including different Chinese dynasties - perhaps a way for you Kara Tur fans to distinguish Shou Lung and T'u Lung?). TAG have free worldwide postage as well, I think.
Medieval Asia range