Please report dangerous drivers to the police - Roadsafe. Report to plod, not just whinge here.

You weren't there, man ;)

He was very very aggressive. It could have been taken either way. I ride away from most things but this was bad

Of course, I don't doubt that for one minute. I have only your account to go on, and the way you rendered what he said made me think that it didn't sound like a death threat but like the usual patronising assumption that drivers know best and can tell riders about what they're doing wrong. There is often an implicit threat in this, as in: if I don't hit you, some other driver will, and it'll be your fault.