If after all of that you feel in real and imminent danger and you do not believe the officer is who they say they are, for whatever reason, then I would say you must seek assistance - shouting out to a passer-by, running into a house, knocking on a door, waving a bus down or if you are in the position to do so calling 999. I agree that the list of questions reads as silly and unworkable but parts of this last paragraph are common sense for any woman in any situation where she feels unsafe, even if that person is presenting as a police officer. And of course Couzens was a genuine officer who would have had a warrant card which was always going to complicate things.
I can assure you winterwhite many police officers (they're not all men!) would love not to have to engage when something goes down and they're 'off duty' but like my son and thousands of other decent police they swear to uphold the law, even at danger to themselves, at all times. When the London bombings on 7th July 2005 happened, my son was amongst those running towards the danger, not away from it. I appreciate that Wayne Couzens has further tarnished perception of the police, but please remember for every bad apple (who are found in every walk of life) there are many, many more just doing a good job. Who do people think caught and charged Couzens? The same service that caught Dr Shipman, nurse Beverley Allitt, and paedophile paediatrician Ralph Harper....