Old bill in doing their job shocker

Yeah, but we're not in court now, I'm simply asking for a feasable example of a reason for which you may not want to give your details.

Because anything you say to a police officer that can be used against you will be used against you, - absolutely anything - and anything that may protect you against the force of the law will be - by definition of law - always be ignored (as hearsay).

Always.