Considering how difficult it is to get a mortgage here at the moment even if you tick all the boxes. (Recent experience there) Getting a loan for flight training with no security in the current environment is well nigh impossible. The banks are very wary of lending any money at the moment considering they are being propped up by taxpayers money.
Reading between the lines, I'm guessing you are looking at an integrated course or the alleged integrated course provided by a certain flight school? Perhaps a better idea would be to consider a modular course. It costs less for a start and it would be easier to get a smaller loan. I would also suggest you continue saving for a bit longer until the job situation begins to improve.