Loans won't cover bills?

I decided to take a year out after A-levels before heading to university and a lot has happened in that year; my parents are getting a divorce, and my father basically doesn't want anything to do with me or my sisters. As my younger sister is under eighteen, he pays maintenance for her.
Anyway, it's meant I've started paying the majority of the bills, but when I go to university i'll be living on a maintenance loan and that's not a lot - it covers the cost of commuting and that's about it. I will be working part time as well, but that'll barely be enough.
Is there any additional help or loans via the Government or Student Finance I can look into? I've started looking into an advanced learner loan as I am over 19, but is there anything else any one can suggest? Thanks!