Happened to my cousin, nothing the police can do, people are free to just go and collect and crush cars as they please.
They did however get charged with handling stolen goods as they kept the bucket seats from the car. There's a thread on here somewhere about it.
Stolen ford probe, he lost out. The laws an ass when it comes to this, the victim gets the blame, excuse being "car should of been insured, taxed and mot'd".
Crap but true, that's how they see it.