Many years ago there used to be a clause in the TV licence agreement that if you so much as OWNED a VCR, you had to have a colour TV licence. At this point in time, we had only ever had a B&W licence and subsequently only had a B&W TV.
That particular nugget forced us (well, my mother) to pay about 3 times as much for the licence as there was no way I was getting rid of my VCR
To be fair, and as I had a mini-rant (mostly to myself) about the waste of money that is the TV licence fee, I was unaware (because I hadn't actually looked - more fool me) that they'd changed the licencing laws to allow ownership if you weren't plugged into a tuner/aerial.
As far as I still knew, ownership of a telly meant you had to have a licence, and if memory serves, you have to agree that when you purchase a new TV - from a brick and mortar shop anyway. I'm sure something was mentioned when I bought my last one, although they may have just asked for my address details.