i got followed by a perv in a car once, some years ago, when out on my bike.
i passed a parked car and happened to glance in the wingmirror and make eye contact with the driver just as i came out of Birmingham at Camp Hill. I thought nothing of it until i got a few hundred yards down the road and the same thing happened again. "That's weird" i thought as i had that da ja vu feeling.
Anyhow, this continued all the way through Sparkbrook, Sparkhill and Hall Green. I'm not sure whether he knew I had already clocked him. But when I got to the College Arms and passed him again, I stopped my bike, turned round and looked the driver squarely in the face. He took off and made a right turn, and I guessed that he was going to come out further down.
Sure enough, he did, he was waiting for me again and I again made it clear I'd seen him. Lucky for me, i had just bought my first mobile phone and, as he knew I had seen him, he pulled into Hall Green Station obviously hoping to pick the trail again after I'd ridden off. But i rode up to one of the shop fronts and hid in a doorway so he couldn't see me as he pulled out of the station and called the police, and as he came out i gave them his registration number.
he then looked back and saw me on the phone (my intention entirely as i came out from my hiding place) and he took off back towards Birmingham (not everyone had mobile phones then so i suppose he wasn't expecting it).
Unfortunately, the police were UNinterested, as they never came back to me to say whether they got him or not.