GRACE ON THE CASE: My stolen car was already a stolen vehicle! How can I get a refund?

I bought a car on Auto Trader after doing extensive checks. The car was stolen 12 weeks after purchase. I told the police who informed the car was actually a stolen vehicle when I purchased it. https://www.dailymail.co.uk/money/experts/article-9320429/GRACE-CASE-stolen-car-stolen-vehicle-refund.html?ns_mchannel=rss&ns_campaign=1490&ito=1490