They are from Conquest Games, not Wargames Factory. They also have skirmishers with bows and crossbowmen as well as mounted archers.
One thing I don't like of these miniatures is the way the arms are made. Instead of cutting from the shoulder to separate the torso part and the arm part they cut half way to the elbow, just were the chainmail ends. And this can give the knigths an odd gesture of the arm.
In the other side, great price/quantity ratio and pretty well sculpted.