Hi Baz, I have a 177 rifle that looks like a Demon but has no markings other than a very fine cut " Made in England" on the top of the cylinder close to the trigger block. It has an unusual rear trigger guard screw that goes through the stock to a brass plate on the top of the stock. Is it a Demon, did the company not brand them with a name? I would be pleased for your advice. Cheers Pete