For anyone thinking of it - always consider university as a learning experience and not a thing to get out of the way for a job experience. Take it from me, in the UK, after you leave university you are thrown into a virtual cage of thousands of others who are all fighting for the extremely small amount of graduate level jobs. A job I was interviewed for before I fell into my current job had 1600 applicants and I was part of 60 looking to get the 10 on offer! This is common and intensifies even further the higher up the payscales you go and also the more generalist the degree/job is.
The majority of these type of jobs outside of formal industry like engineering are also London based. Any London based graduate level job is a byword for being so skint that you will be living in a flat with 5 others just to keep the rent low and you can forget flying in the near future.
My advice to anyone is to ensure that the obsession to fly before you can afford it does not become your life, I know that doesn't make sense but if you go to university thinking you will be start out highly paid at the end of it and then turn up a year later with £50k cash, you will of made the biggest mistake of your life. Consider all options and consider them on their merits, that will help you achieve what you really want to achieve in life.
I say if you want to do university, pick a subject you enjoy, enjoy it, live it, breathe it for those 3 years and then consider flying as a career later. If you aren't bothered about university, get a job and start saving because each £1 you earn is £1 closer to at least starting to do what you really want to do.