As for chocolate. Cadbury is garbage since it was sold to Nestle some years ago. If you look closely at the bars most are not even called chocolate any more but are labelled "chocolatey candy". Lindt and Green & Blacks ( Swiss and English ) are the best I can find these days.
Lindt is indeed very good and I eat those individually wrapped chocolates like nobody's business.
The irony with Nestle is that it's a SWISS company so you'd think the quality of Cadbury would not have declined after the buy-out.
Cadbury was bought by Mondelez (what was Kraft, an US company) not Nestle - & I do agree that it has gone downhill since Mondelez bought it. Costcutting/changes in ingredients & bar/packet etc. size
I could imagine that the decline is even worse in products produced outside the UK for non-UK markets..
Green & Black's was bought by Cadbury in 2005 & was of course subsumed into Mondelez.