Just heard today that the court has thrown out a claim against my wife, for not putting our registration number in properly.   The company involved have postured for over a year over this, which suggests that they rely on fear, or just wearing you down.   It's a numbers game and they don't mind taking the odd hit because most people back down. They have made an accusation that has to be proven. You only have to cast doubt. Let them take you to court.