Maius Intra Qua Extra

Well, at the very least, I wouldn't wear socks with sandals. That's pretty standard, I think (though I do see people wearing them here). I think the next time I visit the UK (which I really hope will be soon), I'll invest in some black and dark gray socks.

Mostly I'm concerned with being so obviously American that I become a target (of either scams or thieves). I'm not so worried about regular people picking up that I'm a foreigner. I did notice the difference between what women wear in the UK and in the US (or at least the US West Coast). In the UK, women never wear t-shirts and jeans - even the most casual women, in the park playing with their kids are wearing blouses and trousers. (Which is another thing that marks me as a foreigner - I wear jeans all the time.) And they never wear trainers - always nice shoes or sandals. I did notice that men don't wear t-shirts much either - the only t-shirts I saw when I was in the UK was on some teenagers in a group who seemed to be part of a school outing, and even I could tell they were foreigners, since they were not in uniform. (my guess was that they were Norwegian).