The US is cheaper for clothes. Jewellery was OK last time I looked but that was a long time ago. I bought a diamond ring home from Dubai that would have cost a lot more here. Don`t forget you`re only allowed to bring in £390 worth of goods.
Clothes and kids clothes can be quite expensive, yes, better in the US although with some things, not as big a difference as there used to be between US and the UK. The gold is not the bargain it was 30 years ago when I got mine.