I do have a chuckle now & think oh well, he was just perving... but I was pretty shaken up at the time and had to pull over a short distance up the road for a good ol' boo, as I was simply incapable of driving. The experience really frightened me.
I was only in my early 20s and being a good little motorist... He'd followed me for over 5 miles and only stuck the blue lights on to pull me over when I indicated to turn into my town.
After I pulled him up on what he was doing, he refused to tell me why I'd been stopped or what he'd been doing. That in itself is wrong - they're SUPPOSED to have a valid reason for stopping you, even if it's just a "spot check" or whatever else they want to call it and they're supposed to communicate it to you.
The questioning was also inappropriate in my mind: questions like "Why are you out so late? Where have you been?" WTF? None of your bloody business! We're not on a curfew in the UK! It wasn't even midnight FFS!
But of course, at the time, I was too scared to speak up and answered the questions like a schoolgirl pulled up in front of the Headmistress!
Of course, a few years later, after I got myself a Capri, I became well seasoned in the art of the tug, as I was pulled over every 7-10 days on average, so it became 2nd nature to deal with them!
If the torch bearer hadn't been a cop? Well, I simply wouldn't stop for anyone else - but if you don't stop for a marked police car and blue flashing lights, they tend to get their feathers slightly ruffled
Despite being able to look back and chuckle at the incident now, it's still wrong for a person to use their position of authority and perceived power to perve in my opinion!