In Devon cream then jam on the scone as they need to mask that white, milky stuff that they have the audacity to call cream. Here in Cornwall, jam first followed by cream as clotted is far thicker and superior. Also, the Cornish tea should come with a freshly baked split roll, a type of slightly sweet white bread, rather than a scone, but you hardly see that now - only in homes.
Butter,jam,cream. DT the bun you were talking about was called a Chudleigh I think. Have'nt seen them for years. I did try to make some once but was not over impressed.(I use Cornish Clotted cream even though I live in Devon,and I have made it. Its quite easy to make.
I can remember my grandmother making them and they were pretty good - dark treacle making up the thunder.....they were really good for the jam and cream as you could pack it in.
She was a great cake and breadmaker - but pastry for Cornish pasties was a disaster. They used to sit like bricks in your guts for hours - think it was the lard that she was using.