From the update:
Studio Sparta is a mail order company that offers a diverse range of figures, vehicles and scenery that do not have any of the constraints of being locked to our core games, and are not limited to models that can be mass-produced for stores to stock. This allows us to make more complex models, to dabble in areas that we find exciting, and we think you will also find exciting.
Studio Sparta is where we let our designers loose, allowing their imaginations to run wild and produce some of our most unusual models. Just like all our other products, they are high quality, highly detailed and great value for money. Some will cross over to existing game systems, but many will have nothing at all to do with fantasy naval, giant spacecraft or Victorian super science fiction.