I lived in halls last year, and they sent us all letters saying that no-one had applied for a license and that we must write to them saying we don't have tvs, or they would come round and check.
Guess what, they didn't. I couldn't be bothered to write back, thinking they wouldn't come round, and it didn't matter if they did because I didn't even have a tv. I reckon you could get away with it, but I wouldn't recommend it! Where I lived the reception was bad anyway, so unless it was plugged into terrestrial we wouldn't have got a signal.