Several replies already, and no one has mentioned money.
If you're not looking to join the armed forces, the chances of sponsership right now are low enough that the only realistic way of becoming a pilot is to pay for the training yourself. You'll need somewhere between £30,000 and £50,000.
Unless you're lucky enough to have parents who will lend you the money, you'll need to aim to get a job which will pay enough for you to save this money in a realistic time-frame. The other alternative is to get a loan, but if you go for that option you'll find that even if you do manage to get a job as a pilot at the end of it all, you'll struggle to earn enough to pay off the loan.
Good luck!
FFF
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