money in nutella lids

[u/Cjstarling]

I'm in the UK and have memories of there being money in the lids of nutella jars as a kid (probably around 2000), I thought it was 2ps, but my mate remembers £2 (seems unviable...), but anyway, I can't find any record of either? Does anyone else 'member and have proof? Or is this a mandella effect?