I was looking at going to Welbeck DSFC after leaving school, and then on to uni after that to do officer regiment training at uni on a UAS course for four years, which was very, very heavily subsidised.
Only problem with it was that it was a minimum of seven years service after two years at Welbeck and four at uni. At fifteen I wasn't really prepared to pass up thirteen years of my life to it.
I say go for it, two years down the line and I regret no going for it. I sometimes wonder how different my life would be if I said yes.