If you enjoy an auto jumble there is the mother of all jumbles at beaulieu, I have never seen so much stuff in one place, it would take a good day to just take a speed glance over all the stalls let alone have a rummage.First one i went to I bought a load of gear within about 10 minutes and had to lug it about for the rest of the day
The seasoned pro rummagers do it right by taking those platform trolleys with a flask and loads of boxes on board. They reckon that if what you want is not there it does not exist.
Bob