do you remember what the biscuits were called?

Afraid not; I think it was a two-syllable word with lots of consonants in (like "Monstro", but not that) but I can't remember any more than that.

There definitely exist(ed) Curry flavour Pringles. Not sure whether they were ever sold in the UK, or whether I've ever seen them myself, though. I've certainly never eaten them.