gryphon, research and reading indicates they use very similar alkanet, resin and linseed formula's as i intend to post when i collate my material. Thats how i learned about the better types of linseed finishing, from writings about the English gunmakers.

They themselves won't tell you much detail about the various ingredients, apart from some retired workers or independent workers who sometimes post on other forums.

I found a good Purdey interview on video about how they make a gun and it has a good section about their stock finish. I'll include the link when i do the post, but they still don't tell all the ingredients.

Regards,
GABE93