Seriously flog it yourself you'll lose thousands using we buy sites. It's no scarier selling a £20k car than a £200 banger, just be duly dilligent and get a bank transfer, don't let it go til you have the funds actually in your account, take a photocopy of their photo ID, insist their bank and address details match the ID and it's done. If you're worried you might get turned over for the keys arrange to meet at a very public place like a drive through Mcdonalds that's always busy and has CCTV. At a push you could stick it through a car auction but webuy sites will be the lowest amount you'll get for it, so I'd avoid them at all costs x