I also had the idea that there was a culture difference, under which US courses tended to follow a book, while UK courses tended to follow a fixed path local to the university, slowly adapting the notes of what the last guy taught, etc.
At least at my university (the University of Bristol), the Student Union had a formal seat (or multiple) at the table for pretty much every decision the university took (whether they were listened to is another matter, but they we're certainly there).
The relationship between the university and the students union was also pretty friendly. There was no need to march against lecturers, because the people in the departments whose job it was to work with student representatives were usually pretty happy to reduce course costs where possible. It's basically a win-win situation, so why not!
Interestingly, one of my good friends for a year was a student from France who was amazed at how much more we were getting done in classes, because we weren't constantly going on strike like he was used to.