I was born in 1966. We had a black and white telly - it was a special Redifusion telly which looked slightly different to normal tellys and it was all done through cables or something. I was the official channel changer although tbh, we didn’t actually switch between the three channels very often, we usually just sat there and watched whatever came on in those days. Mostly it was on ITV as I recall, and nobody minded the adverts because they were quite entertaining. 
I think we got a colour TV in about 1980. But I was still the channel changer.