Anything which saves them money!
It's your life, not theirs. GO TO UNI!! You won't regret it - but you might need to have an understanding bank manager.
30 years ago, you would have been an Acting Pilot Officer at university, paid at what would be around £12000 p.a. in today's money. (I was paid £1200 in 1972, £1800 in 1973 - when a brand-new MGB cost £1150-ish!). Your UAS membership would have been automatic - and the flying would have been regarded as something to keep you motivated whilst studying. It would NOT have been an assessment - as it is today!
But the so-and-sos have done away with all that because they won't invest the money in you. Ignore the BS, go to uni, join the OTC, have a great time. Then - and only then - apply to the RAF!