If a vehicle is untaxed, we will contact the DVLA and inspect the vehicle (within one working day of the report to us).
If the vehicle is a danger to the public, we will remove it (within one working day of the report to us).
If the vehicle is not a danger to the public, we'll put a warning notice on it. We'll leave the notice on the vehicle for anything from 24 hours to 15 days. This gives the owner the chance to remove the vehicle. Once the notice period has ended, if the vehicle has not been claimed we'll remove it within one working day.
(Sorry, if the vehicle is not abandoned and is blocking your driveway you need to contact the Police.)