A delight to use. Most British boxlocks were made by Skimmin & Wood and can be found with many different names as KY Jon says. Mine is named as J & W. Tolley. I tend to use Eley 2" cartridges or else load my own. They are getting harder to find and usually command a premium over other boxlocks. If you find one at the right price my advice is to snap it up. Lagopus.....