Do you know what Neil I was trying to work out what the item was, never been stopped and had a breath test so did not have a clue. The old bill must have been having a bad day, I often pass them when they are dawdling along lower then the speed limit for the road (dangerous driving in my book). I always pull in after I have overtaken and then stick to the speed limit.
At least you did not have to contribute any money towards their pension fund
Brian