James, I agree totaly with your first point, but your second point means a vital ladder of the motor trade get removed. There are honest roadside traders, I'm sure of it, so saying they should be banned is akin to the days where only Main Dealers could service cars under warranty because of the so called 'Experts' could do the job properly.
All bad dealers should be crushed and stopped. All honest dealers should be given a fair chance by them roadside or franchised in £10m showrooms.