I would agree with the others. I think I'm lucky in that my university offers discounted course fees to student alumni's, and with rent being relatively cheap in my are around uni, for the first time ever my loans have been able to cover both tuition and rent (which is crazy to think about).
I also work part time to cover my food costs, and to generally live off of, but I know parents are able to help out if times get tough. It's difficult, and I think most people go and work somewhere, save money, and then come back, but there are some possibilities if you're willing to work at the same time as studying.