Forget your bond. It's not getting "paid back". It never was. The only thing you were getting was a tax break on the borrowed sum. You were getting a reduced salary and a tax break on the remainder. You are paying your own loan and always were.
Under Flexicrew, you don't even get that. You are just paying the full whack repayments until they are done. Go to the continent on a perm eJ contract, the same applies. Come back into the UK via transfer, the same applies.
Your bond is just you paying up front for your training. It sits in a bank account in CTC and the interest allows them to buy all sorts of nice stuff. It's a good game for them.
95% of people are going to eJ Flexicrew. The ones in Qatar don't get bond repayments, they pay it back from their own untaxed wages.
Only Monarch recently went along the old lines of the tax break, and they aren't taking any more cadets at the moment, and their expansion isn't exactly big.