Having never stopped off in the UK to buy sweets, I wouldn’t have thought of this. A English journalist in Las Vegas started it off:
Oh my god, American Skittles look the same but taste appalling
— Holly Brockwell (@hollybrocks) January 7, 2015
If you read the whole thread, you’ll hear that the American version of an English candy — like, for instance, Skittles — will be “always nasty in comparison,” and American Nutella is apparently something to be avoided.
[insert vague “spotted dick” reference here]