Found this interesting site which documents what employees make in the UK and what they think of their jobs. I found the tasks listed by the employees to be really interesting. There's a lot of surveys done.
Graduate Careers - A List of every graduate career and career sector
Some interesting things I observed.
-It seems in the UK that salaries of different professions are clustered a little closer together. Doctors don't make that much more than everybody else.
-Lawyers (barristers) make peanuts.
-The working hours seem to be lesser in general than the US.
-The working wages seem to be lower in general as well than the US.
-More people seem to like their jobs in general as compared to a US site such as Glassdoor.
I didn't really look at it in detail, but it kind of leads me to believe that people in the UK work less, get paid less, have a more homogeneous middle clustered salary base, and thus have a much larger middle class. I think this would actually lead to a happier life.
Maybe somebody who has lived there can comment.