Ashford's importance as an agricultural and market town grew in the 13th century, and in 1243, King Henry III granted the town a charter to hold a market for livestock. The pottery industry expanded in the 13th and 14th centuries, with the main works based at what is now Potter's Corner, a few miles west of the town centre. Later evidence from examining waste suggests that production was on a large scale. The Kent Archaeological society have discovered sandy ware at this location dating from around 1125 – 1250.