Similar happened to me no long ago, sometimes last year.
On my commute, I used to leave the cycle route for a short distance, because that stretch is a shared pavement usually full of broken glass.
The adjacent road is wide, 2 lanes, one goes left into a housing estate, nowhere else, in there one can rejoin the cycle route.
There was hardly any traffic, only me in the left lane, hardly any cars in the right lane.
A driver closed passed me beeping, then stopped at the lights, put his hazards on, exited his car, started shouting at me.
I couldn't understand what he was shouting, because I stopped my bike as soon as he put his hazards on, I could feel something was wrong.
It was scary. I don't know if he though I was a guy, not a 60+ yo woman.
I don't know why he was so angry: if he thought I was slowing him down, he could have passed me with ease, I was not riding in primary.
He then turned left into the estate: I avoid taking the road on that stretch now, because it's part of my commute, and he obviously lives in the estate
Should we cross paths again next time he might get violent.
If there was any point in reporting him for his behaviour (to whom?) , then it might have saved another cyclist from this bully. But, we should be able to ride without having to make reports of irresponsible acts against us. For some reason we are often targets for dangerous confrontations and it shouldn't have to be this way. However, we should be thankful these incidents seem to be few and far between.