The biggest problem with not having a TV is trying to convince the authorities you do not have one. Back in the early 90s, I lived in a house with no TV. I got a letter stating there was no record of a TV licence at this address. I returned it, having filled in the reason I did not require one - I did not possess a TV. After returning 4 such letters over the course of a few weeks, there was a knock at the door one evening. They had come to check there was no TV and proceeded to search my house. Unsurprisingly, they did not find one. I got another series of letters the following year, but I managed to convince them via a phone call that I did not possess a TV.