checking if car has finance

Hi
Im buying a car tomorrow for the wife. Can someone tell me how you can check if there is financing outstanding on a car before buying

Thanks

I have checked with cartell and am awaiting feedback but would just like to know if there is another good way to do it

the AA and RAC offer a check on finance

did a check and found out there was financing despite being told there wasnt. Used cartell, worth every cent to do it,