If you don't own property, if your parents won't or can't offer their house for a remortgage, if you don't have upwards of £50K savings, if you aren't female or ex-military, then I think the options are really very few.
Get a job, work like mad, put personal life on hold (no wife or kids for now!), and hopefully save up for training. There are some loans available but they're for later on in the training process
AFAIK. For example, the Professional and Career Development Loans seems to be only available at CPL stage onwards, so that's about half of the cost of training already sunk into PPL and hour-building. I would love to be wrong about this but doesn't seem to be the case....