Stormshadow Guitarworks is quite a well known custom shop luthiery, based in Sheffield. Like many of these companies, it’s a one-man band, a luthier called Rich Atkin. He aims to build custom guitars at a lower price than the big brands, whilst using high quality materials.
He has a number of his own standard body shapes, and regularly make custom finishes including one-off graphics such as those in the pictures below. He also markets a series of amplifiers under the brand Stormshadow Ampworks although I don’t know whether he does the manufacturing himself.
Here are some links to the Stormshadow website, Facebook page and YouTube channel. He is currently running a raffle for a rather nice-looking guitar on Facebook, 250 tickets at £10 each, which could be worth a punt!
Here are a few examples of his work: