You've got next to no chance of winning a claim like that, trust me. Im guessing there was another cop in the car? making it 2 cops against a lad and his missus...... You can either mouth of at them which they deserve when they act like that, or swallow your pride and arse lick, that's just how it is in this country, although from experience ive found it's more often the younger cops on a power trip that literally just drive around giving young people stick, it's so sad but there's nout you can do, they'll always come out on top..