Old bill in doing their job shocker

Nobody actually has to be caused HAD. The wording of the statute is "likely" to cause HAD. There's a fair bit of caselaw on whether a bunch of coppers are "likely" to be caused HAD. Usually statements say "there were people walking past looking shocked at X's language. In seven years as a police officer, I have never heard such vile abuse" etc etc.

You're right about intent, though, s4A.

Indeed. "Likely". It's usually a young mother with a child who had to cross the road in order to escape such disgusting language! Invariably they never hang around to give a statement...