The Toyota WP56PNF has a printed sheet saying "Warning police notices nearby tell pavement parkers that they may be towed away".
Which, given the fact that it doesn't happen may be true -the signs are there- but meaningless.
on a different day, the honda R462BAE had a handwritten note. "Your vehicle is illegally parked and is causing greate inconvenience and is a hazard to builders trucks and other's vehicles"
At the bottom there is a threat. "You will be reported to the authorities". The author of the document was nearby; he'd phoned the authorities a few hours earlier but nothing had happened. Which doesn't surprise anyone. What is interesting is that some people in this street do actually care about parking issues and are trying to deal with it. Our Kingsdown dataset implies that the main vehicles parked along this keep clear/double yellow line area are actually a couple of local cars. Maybe it's just outsiders that get the rude notes.