Oh but we are, we are talking about authorised persons and a police constable is defined as just such a person.
I shall re-post what AlexS posted above and highlight the relevant part.
Now I have clarified I shall ask the question again in a different way; Would you be unwilling to provide your details on request to a someone dressed as an authorised person and who presents what looks like official identification?
No - we are not talking about police officers at all - we are specifically talking about people on trains/stations who are somehow expected to be assumed to be "authorised".
In answer to your question - yes if I was satisfied that person was indeed "authorised" to demand it. If I had any doubt, no, I would not. And I was hoping someone on this forum would help clear that doubt.
Who on the railway is "authorised" to take your name and address?
How would I know someone is, as you put it, "dressed as an authorised person" and how would a non-authorised person be dressed?
What marks out an ID card/badge which belongs to an "authorised" person from that worn/carried by a non-authorised person?
Fairly simple questions. Can I have some simple answers?
And is there anyone who can tell me if it is make absolutely clear that the required address must be that on the "electoral roll". You see, your address at the time could easily be different from that on the electoral roll...
Steve