I have been musing on this problem for sometime now, stimulated by two things.
Firstly, the common misnomers of attribution that I see on dealers stands, or by auctioneers, and or course, on eBay (and occasionally by collectors in discussion). Secondly, having visited the Aesthetic Exhibition held at the V&A Museum a few years back, I was astonished to see only one piece of British glass. It was a C. Dresser, Crow's Foot claret jug. (Mind that omission was true of the Art Deco exhibition too!).
This made me wonder, "Wasn't there anything else from Britain?" - especially since, at home, I had two highly Aesthetic pieces, an S&W decanter (missing stopper), and a silver plated stand holding a pair of deep bowls, all with high Japanese influence to the British taste. Was it not possible that a Museum in this country held similar items that could be worthy of show?
Then I went on to think about the pieces that I'd seen over the years with various attributions to style, or era.
I've been pondering since, and really was seeking the thoughts of other members. This might have stimulated a breakthrough with my little brain cells.
Yes, of course I have formulated some views, but occasionally I see something in a discussion, or a description, and it makes me question what I have concluded.
So, as you can see, it is a work in progress. A&C isn't a problem, generally, nor, Art Nouveau, or even true Aesthetic, it's when there appears to be a cross over that I can feel some confusion!!
Enough for now. Cheers, Nigel