Thanks Mike. Was wishful thinking on my part then that Prince Albert might have been influenced by the Brummie exposition. But it most probably did have some influence as the visit to Bingley took place only 3 years before. I know from reading about the Great Exhibition that it required a massive amount of ideas, planning effort, including putting ideas through committee. So they most probably would have drawn on the experience of others.
Re the drawing. The exposition building is nothing like I expected. Viv.