I'm really 'hot' on this issue - feel really strongly opposed to idiots who use phones while driving and am constantly lecturing my teen learner driver about it.
So I was gobsmacked to just receive an 'advice' letter from the police in a neighbouring county to say that I was reported for driving while using a mobile phone last week!
This letter is a 'warning', it doesn't constitute an offence and I'm not being fined or having points on my licence, but it does say that the report against me/my vehicle will be held for 12 months and if reported again, the police may 'investigate further'.
Thing is, I KNOW this is categorically untrue. I NEVER hold/use my phone in the car, and I have a bluetooth connection and windscreen mounting to receive any incoming calls. I checked my call log anyway, and didn't receive or make any calls in a 3 hour window either side of the reported 'offence'.
I've racked my brains about the allegation and the only explanation I can come up with is that someone has made a spiteful false report.
At the time of the supposed 'incident' I was driving with a friend to an event about 40 miles away. It was single lane unlit country roads in an area we didn't know, and at one point I remember being tailgated by someone who was driving very fast and was clearly impatient to get past. We were looking for the next turn/signpost so were not travelling at the full speed limit (but not ridiculously slow either). When we finally turned off this ar*ehole did the full lean on the horn thing and sped off into the darkness 
There's an option to dispute the allegation. I'm so annoyed that I want to, but is there really any point? I suppose it would be on the file.
I'm just so annoyed that someone can/would do this!