To everyone, thank you very much for your support, and here's the latest update.
Things have calmed down to a certain extent; in that it looks like my parents won't get divorced after all, and that they will stay in the country. They've managed to hammer out an agreement, my father has apologised, and they will do their best to see if the marriage can be salvaged. However, it has been decided between the three of us (my mother, father and I) that it is for the best if I leave at this point and become self-sufficient. There seems to be too much tension caused with two full grown male adults in the house, and it is felt that maybe the situation would calm down if I am not here.
After numerous calls to the accommodation board, the student finance board, the student loan company etc, I've been able to find out that I will be able to go to Uppsala to study afterall, and that I will still be eligible for the survival loan despite not actually studying in England at the time.
This means that the situation is not as dire as I'd feared; I know now that my family will be looked after, and I know I will be fine. Maybe this was the push that I needed...
Who knows; but I am glad to know that even if I have big debts afterwards, I can still achieve what I desired.