Most people would ask, if borrowing a car, whether it was legal for them to drive it, in terms of it being taxed/insured but would they ask if the TV is licensed before watching it ? I never have.
Are you liable then, if you watch TV on an unlicensed TV, that isn't any of your responsibility!?
If so, I never knew that. So if 100 people are sat in a pub, watching the football, (its an FA Cup game on the BBC) and the landlord has no TV license - they are all at fault??