Burnt earth and brick rubble found N of the town in what was Mr Wallace's garden have been explained as a tile clamp, "but we regard this evidence now as pointing more probably to the ruins of a building made of clay blocks and destroyed by fire". However, "P.G. Laver always held that there was a potters kiln near this point, and there is in the museum a quantity of pottery from Serpentine Walk, at the corner of St Margaret Road which indicates that the firm to which `Martinus' belonged had worked there".<1><2>