I was sure that by now someone would post the info from the IGC on Jones. Hope it will appear soon.
Barring that Boothroyd gives him about 2/3 of a page in his " Directory"listing multiple addresses and four patents.
Doug Tate has a nice blurb on Jones including the development of his try gun in his book "Birmingham Gunmakers"
If you want photos of the pages pm your email to me and I'll get them off to you