I called the cops on a person following me once. I waited inside a friends house until they showed up as I had High Values on my car. He ended up being our relatively new L.P person whom I hadn't met yet, and was just doing D.R. observations. He actually was impressed by my situational awareness. We ended up getting along pretty well and he's one of the few management people I respected over the years.
Previously I would say make the person aware you know they are following you and that you have noted their license number (assuming you had not identified them as a management person at that time), then determine if the police should be called. I say better safe than sorry in these situations now, especially with the recent holdups we've had showcased on this forum.
