Nobody in their right mind is going to give anybody £60,000 without any security.
Go in with a good plan. Structure the plan as follows:
About you, your employment history school grades etc
About the course you wish to follow
About the cost of the course you wish to follow
About the success stories of those who have graduated from your chosen FTO
About how intelligent you are and how you aim to excel in the course
How you will be earning £50,000 a year when you qualify
How you will cope when it all goes wrong you fail to gain employment and have to pay back £450 per month
How you will eventually gain an airline job
£40,000-£50,000 is some serious wedge and you really need to carefully consider the impact it will have on you later in life. What will your quality of life be?
Meet the bank and imagine you are trying to sell them a product. Big yourself up to the max and if they think they will gain from your success, without too great a risk factor for themselves, I’m sure they’d be only too willing to throw money at you.
Good luck. If you fail at one branch, try another and don’t be disheartened.