Yes, I think that unfortunately you may not have much joy with this one. One of my previous employers had private parking and employed a parking company to police it. My friend who had a company parking permit on her dash, parked her car and as she got out, the wind blew the permit into the foot well and she got a ticket by the parking company. She contacted them and explained the situation, but they were extremely unsympathetic and said it was not their problem as she was not displaying a valid ticket. She contacted our company who were sympathetic, but said they could do nothing about it, as the parking company worked to their own rules and regulations and our company had to abide by them. It is always worth contacting B&Q of course, but you may not get very far! Best of luck, Sue