Mrwannabe
Raf is an option but remember the licence you gain will not automatically convert to a civil licence after you leave ,look up "will fly for food 06" he was on my atpl course and is an ex fast jet jockey so will be able to tell you more about the raf.
At 16 concentrate on your a levels and seriously look into any sponsorship schemes that might be around or linked intergrated courses such as "net jets and oxfords" but warn your dad his support might run to £70 k or so.
Good luck .