Even if you don't get a car, it'll be useful to havea licence. I'm learning now (also in Year 13) even though I probably won't get a car for a while, but I might borrow my dad's once I have my licence if I need to so that he doesn't need to be running me around all the time.
My boyfriend's brother is 22, he's been out of uni for a few months now and recently come back home. He said that he had lessons when he turned 17 but stopped and now he really regrets not being able to drive because his mum drives him to work.