MG Midget, Austin-Healey Sprite & Ford RS2000

There is a triple collection of desirable cars in store for Derek when an MG Midget, an Austin-Healey "frogeye" Sprite and a Ford RS2000 come up for auction. A BT van all kitted out for work in 1971 goes under the hammer - and like father like son, it's Dave's turn to take to the auction rostrum.