According to a poll for British Food Fortnight, an annual event designed to excite and educate young people about British food, of 1,000 children in England aged between eight and 13, 54% did not know pasties came from Cornwall and 57% did not know haggis originated in Scotland.
(Of course the confusion may arise because they'd probably never even tasted haggis and that Devon and Cornwall keep arguing about who invented the pasty.)