Why give your details to anyone if you have done nothing wrong? are you a slave? (actually you are...we all are, but still). remember your name is your property to do with as you wish, despite what the police say, cause they know very little about the law, they just do their masters bidding. I know what I would say to some jumped up shit head in a costume if he demanded my details without good cause.
oh, i am in scotland btw