If you’ve run a motorscan car report on a vehicle and it’s come back as stolen, then stay calm, you’ve just found someone’s lost vehicle and saved them a lot of stress.
What you should do next is to pick up the phone and call 101.
Don’t call 999, as locating a stolen car is not an emergency. Calling 101 will put you through to the police to report a crime or to provide information on a crime (such as finding a lost car).