illusions?

So, I'm curious. For those of you who live, or have lived, in the UK having come from the US (or in the US having come from the UK), what surprised you most? By which I mean not so much economic things or climate things, but what did you believe/expect/look forward to about the place you were going that turned out to be completely wrong? I'm thinking first of all of disappointments (shattered dreams? ;-) but also of unexpected pleasant surprises.

I know, I know, in [X] they don't have [Y foodstuff] and the cost of living is [better/worse] and it always [rains/is sunny], which is just awful. But on a somewhat deeper or more abstract level, what was really different that you didn't expect?

(crossposted to some communities)