Similarly, deep-fried battered sausages are popular here but never really crossed the Atlantic. Both in theory should be popular in both countries but they're not.
As for toads in the hole, sausages cooked in a Yorkshire pudding, that again should appeal to Americans but it doesn't.
There are lots of other non-sausage examples, e. g. American grits never took off in the UK despite the British love of bland tasteless food.
Thoughts?