I used to watch the Police Squad tv programme with Leslie Nielson. Thought it was really funny but had no idea who the very tall man was.
I think that was very typical of most Brits of my age. He was a big name in the US but not known by most people in the UK although American Football fans (even more of a minority sport in the UK at the time than it is now) would have known who he was.
The first time I heard his name was when the police chase was shown on British News.
Then, during the trial, I learned a little about what a nasty piece of work he was but didn't get the full picture until much later.