Folks who do, or did a scroll upper horn that I can recall include, Carl Thompson (the original), Hilton, Huff (who went down in flames owing a lot of people money/basses), Eve (don't think they're going anymore), May (still going, but the article probably predates him), and Gnome I think was another one?
If the builder was UK based I think it might've been Eve?
There's probably loads more out there but brain fade prevents full recall... 😎