Every car must be taxed or SORN’d and classic/vintage cars are no different, they simply have a ‘nil’ payment. The tax has to be renewed every year.
I suspect that some of the cars on the show are displaying false plates for privacy.
I've just put Wheeler Dealers on, searched the reg of the Aston Martin DB7 and it's MoTd but the tax is out of date. It's been doing on average 1400 miles a year, what a waste of a car
Although no money or amount of work is spared in making the cars as good as possible, any aged car will eventually befall some required repair that exceeds the value of the car.
For many, an unobtainable part may have been the death-knell for the vehicle.
I used to be in a Wheeler Dealer FB group and quite a few cars that had supposedly been sold on the show were advertised for sale on Autotrader by the production company. It's all smoke and mirrors.
It was never just Edd or Ant that did the work, there has always been mechanics, panel beaters etc working off camera.
Just as Mike didn't source the cars and do the deals.