Always a seems a little odd, bearing in mind the number of WW Show visits to various cities around the UK that more studio photos of individuals don't turn up - particularly when we see what seem to be four different backdrops in this group of photos. I'm excepting the large number taken by Elliott and Fry in London of the 1887/8 tour. They were, I think, one of THE photographic studios in London and anyone who was anyome had their photographs taken by the company, though I'm not sure how many of the original negatives/plates remain in the archives, now owned by the National Portrait gallery in London, because many were destroyed in 1944 during the war. I suspect those that frequently turn up at auctions may be all there are.
I guess the same is true for all the European cities they visited too. Has anyone come across a large group of images taken by a particular studio in Paris, for example?