What is "tax disc"

Usage examples of "tax disc".

The third - a brand new, jet-black Dodge with tinted windows, fat tyres, diplomatic number plates and a sticker in the window saying `Tax Disc Applied For' - materialised on the M40 at its junction with the M25 and drove like a bat out of hell northwards, staying in the fast lane all the way and flashing the cars in front with its lights until they pulled over and let it pass.

Now he rarely visits one, except occasionally in his lunch hour when he needs to renew the tax disc on his car.