There are some folk who don't pay any VED and have non-DVLA number plates, they are called Freeman of the Land and use the Magna Carta which says (I paraphrase) that you can't be taxed for travelling unless you are "Driving" which means you are doing it to carry paying passengers. The government tricked people into becoming "drivers" by way of the driving license.
e.g.
http://www.whatdotheyknow.com/reques...free_man_on_th
http://www.projectfreeman.com/Stop%2...UICOR-DVLA.pdf