Originally Posted by
bykimbo
Okay, after I finished typing that I thought "I must have got something wrong there", you couldn't possibly be saying the seller doesn't have to send something off, it wouldn't make any sense. So a quick Google produced:
Notifying the DVLA of a Part Exchange Deal
If you sell your car to a motor dealer, you should fill in the yellow section of the V5C registration certificate, and pass the rest of the form onto the motor dealer.
If you have a two-part V5 registration document, fill in the red section (complete with the details and signature of the motor trader), send it to the DVLA and give the rest of the document to the motor trader.
Once you have sent the relevant documentation to the DVLA, you should receive confirmation that you are no longer liable for the vehicle within around a month.
When you come to sell a car, you need to make sure that you have taken care of certain selling responsibilities, including making sure that the DVLA are aware of the fact that the vehicle has changed owners.