We're part exchanging our car with 3 months tax left on the disc and buying a newer vehicle that comes with no tax disc. We didn't get a particulary good amount on the p/e and I expect that our old car will be driven away from our house on the dealers plates and end up at a car auction. Is it acceptable/usual procedure to keep the valid disc and get a refund on it or should I just let it go?
Cheers in advance to the collective STW fountain of knowledge for guidance on this matter.

