just like to appoligise for my last reply. I had a really bad day - don't take to heart.
Unfortunately, Stapleford are no longer under the Barclays proffessional studies loan scheme so you can't get an unsecured loan for your flight training. You could have used this after your fATPL. So you'll need to have a secured loan. However, by the time you get into your course there is a likely hood stapleford will have regained a loan provider so you may be able get 25k unsecured, but anything else over will need to be secured.
If you were jammy enough to get the Barclays loan before it finished, you'll have to get a secured loan as it will be over £25k.
hope this helps