Let's not get too high and mighty here, they overturned that specific case on the specific grounds that the swear words were not uttered
at the officers but as a part of normal speech, speech which "robust" police officers should not find harassing, alarming or upsetting.
Justice Bean said in his summing up (to make sure the delicate officers had firmer ground going forward) "This is not to say that such words are incapable of causing police officers to experience alarm, distress or harassment." He did not add, "so crack on lads and bear that in mind in future"
You can rest assured that police officers are, nowadays, much more savvy and when hearing such epithets make sure to feign upset and alarm and claim they were being harassed right off the bat. They will cheerfully manufacture the devastating effect such course language has on their Victorian sensibilities as well as act on behalf of anybody else in the vicinity, whether they've complained or not (or not being the usual case). Add in a skewing of the intention of the person swearing to maliciously create an offence and..... "yer nicked". The beauty of the old section 5 public order offence and it's malleability.
The only time you can most definitely verbally abuse a police officer is at a police station whilst in a custody suite as there is no sec. 5 offence one can commit whilst in there. I would advise in advance, should you be considering letting loose at some future point, whilst a guest of the constabulary, that such behaviour is almost guaranteed to attract a
vigorous condemnation from any and all offices present for being "verbally uncooperative".