So I think I've missed something but maybe not. I nicked a parked car while exiting a Car park. I got out. Didn't notice any damage. Couldn't take a photo because my phone refused (low battery). Didn't have any paper/pen. Took a note of the registration number. I exited the car park and found somewhere suitable to park up. Returned to the building that the car park belongs to. I asked the receptionist to try to find the owner. She couldn't. I left my name and number with her in case they came looking. Am I supposed to do anything else? I assume that one doesn't report this kind of thing to the police? Does my insurer need to know. I know IABU for not knowing but this is the first time I have done this.