Horatio's story makes it quite clear that no crime was being committed. like i said, i've asked a couple of lawyers about this and they're looking into the legalities of it because i'm not happy just taking your word for it, irrespective of what you do for a living. i've nothing further to add.
Whether you are innocent or guilty it is nothing short of stubborn stupidity to give attitude to someone in authority who is challenging or merely questioning you.
If I was out walking my dog and a copper asked for my details I would quite politely tell him thanks but no thanks and continue walking my dog, if your doing nothing wrong why should you be delayed/questioned by them?, I am not (personally) prejudiced against the police, its a tough job (well actually it's not according to my mate Phil, except for the paperwork and dealing with scrotes its (his words) a piece of pi55
). If I was in my car driving along abiding by the law I would probably not get stopped but If I did what excuse would be given?
"I don't like your face" "I am jealous of your car" "You were driving erratically" "You pulled away from the junction quickly" etc etc, I would be inclined to say you already have my details on ANPR or PNC. When you get Told in a stern voice to "Hand over your car Keys" you do think "Hang on a minute chap, pleasantries dont cost anything!", I have long since adapted the mimic reply, stern voice gets a stern reply, nicely worded sensible question (Not "Is this your car as you pull up on your own drive" gets a sensible and nice reply
We used to get hassled a lot when we were younger (17-21) mentioned previously until letter from solicitor stopped that nonsense, but having a couple of mates still in the force and 2 others now out of the force you do get to hear the other side of the big boys club
I remember from those days there were 2 local coppers who were decent blokes, proper old school (Clip round the ear as a kid etc) and treated you as you had behaved, but then there were the other 6 who were complete tossers no matter if you had not done anything (I do not have a criminal record BTW and was a decent kid) they would just harass you to keep themselves busy
For the majority it's a serious job done within the law but there are plenty in there who use it to their advantage (usually those who were bullied at school and now on a power trip), it is a shame that's what people remember.