The NMC states that you have to have x number of hours completed in theory and practical before you can be a registered Nurse. I can't remember how many hours it is, but it's a lot, so for that to be condensed into a 3/4 year course, sacrifices have to be made in the way of holidays. :P I did a year of uni after I left school and frankly, I got bored very quickly on the 4/5 months I had off in the summer. Unless you have a job, and friends with no jobs, there isn't a lot to do.
I'm starting a Nursing course in September and I know it's going to be a lot of work, a lot more than what I did on my year at uni previously. I don't mind though, it's what I want to do so I'm going to put the work in.