With respect, have you done any research? Do you know why people choose HSBC as a first port of call for pilot funding?
It's because they allow you to defer repayments on the loan for up to 18 months. You need that because you're not going to be in a job whilst doing the integrated course!
If HSBC have rejected your application for a loan then that's your best chance gone. But do you honestly think there's loan sharks out there who allow loan repayments to be deferred for that long? on a loan of £60k++???
Ask anyone who knows anything about loans (namely the banks and loan companies themselves). You're living in cuckoo-land if you believe you're ever going to get any unsecured loan for more than £25k with deferred payments for that long.
Good luck anyhow.