My SIL (who does not live in the UK) only served sweets, crisps, cakes and biscuits at my neice's last party - reminded me of parties when I was a child! I'm sure there were lots of fizzy drinks too.....
I do provide a few token sandwiches (for the parents' sakes really) but do think it is sad if kids are not allowed to have "rubbish" even on their birthday....