http://www.youtube.com/watch?v=lgGKSjiw0HQ

I got an email that said if I can go and help with charity work in the next few days then I would be welcome, so I went to the station to see if I could get a ticket with the last of my money, and I got a ticket, I still have a small amount of money left but the future is very foggy, how can I sleep rough in London again, even tomorrow night? where do I go from London and how?
How am I going to support myself and how am I going to eat once I finish helping out in London?