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If you are only just doing your ground school, you will need to go armed with details how how you are going to fund the rest of your training and how long it will take.
As I said earlier they look to giving CDLs with a view to the course they are given for enabling employment.
ie: If your ground school costs say £4k, where is the money for Hours, CPL, IR or FIC going to come from. Only once you have a COMPLETE 'course' can you gain employment, and that's what they want to know. Remember the max study period they will fund is two years (I think).
You can split your CDL between course providers, but it's a pain in the arse, as you need forms completed for, and signed by each one at the time of initial application. You can't just take £4k for your ground school and go back for more, as it's seen as another loan, and you have to have paid the last one back in full before you can stick in another application.
A CDL is fine if you are trying to fund the final stages of training, but it does not fit our proffesion at all well if you are just starting.
However, it can be done but you will need at least a letter from whoever is going to fund the rest.