That doesn't answer my question at all. He basically said (and tell me if I'm wrong) "we stand by our target, and the number of people going to uni is going up".
Not once did he attempt to justify unis being able to increase tuition fees year on year.
I also got the feeling that Labour plucked this "50%" figure out of thin air, made it their target, but didn't have a completely clear idea of how it would be funded. Therefore they've had to resort to allowing unis to increase tuition fees; which, as david lammy failed to clarify, contradicts their target of trying to get more people to go to uni.