A few of my friends have a TV in their rooms and they say they wouldn't be bothered if they didn't have it,its just a nice novelty to have there. Also you'll have to get a TV licence and they normally start sending letters to you after your first couple of weeks in uni asking for payment, they were asking my friends for around £140, if you don't pay and they suspect that you have a TV, people will come up to your room and check so it's really whether or not you can afford an extra lump of money on top of paying for uni in general.