I have recently realised my dream of becoming a commercial pilot via the modular route.
The above quote indicates that you have obtained your CPL via the modular route? But the rest of the message makes me believe that this is what your eventual goal is?? Well, thats what I'll assume.
Firstly, I suggest you search for info on Vision Aviation in the Wannabes forum using the search facility above. There is some interesting reading on Vision Aviation.
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Vision Aviation Thread
Secondly, and in answer to your question, don't know. How bad do you want it?? As with any potential sponsor, they will only want to hand out their cash to individuals who have a 'passion' for what you want to do i.e. aviation. They will not expect you to be upto to ATPL standards, but they will expect you to know what it stands for?
Go to the library and pick up a few books on private flying (I can't recommend any off the top of my head. But I'm sure someone else can if you ask around here), and gen up. If you start reading the PPL stuff now then you will be better prepared for the course, and stand a better chance of answering interview q's and gaining a sponsorship.
Good luck