I got one of these recently, but wasn't driving the car. I am the keeper. I genuinely don't know who was driving. I know the circumstances, it was a genuine misunderstanding of where a permit was valid for, but the appeal on that basis was rejected. After doing a lot of research, reading lots of incorrect/out of date information and apparently unclear information on the Citizens Advice Scotland site, it seems that the law has changed recently. If the driver is not known, the keeper becomes liable for any charges, so these private parking companies have now much more power than before. Since I was not the driver, there are no ways to appeal on any of the independent appeals facilities. If they take the keeper to court, they will probably win.....unless anyone has better info??