I was excited to try one the first time I was in the UK, having seen it mentioned so often online. It was the most vile crap of candy I've ever had, so much worse than even the cheapest chocolate I had tasted before.
Cadbury used to taste substantially better here and has been coasting on that reputation since it was bought over by Kraft (now Mondelez) in 2010. It was never exceptional, but it was definitely better than it is now