Wooden wheel, about 3,000 years old, from the Must Farm Site in the fens near Peterborough. Diameter about a meter, or 3.3 feet. You can see that it was formed of boards bound together.
One interesting question is why people had a wheeled vehicle in this marshy site, which sat on pilings next to a river channel. Perhaps there is a corduroy road somewhere nearby that has not yet been found.