Pankhurst took over the pottery of William Ridgway of the Ridgway Potteries family, who had introduced white granite ware. Between 1850 and 1851, the pottery operated as "J. W. Pankhurst"[1] until J. Dimmock joined as a partner in 1852, at which point "& Co." was added.[2] The company had operations from Charles Street and Old Hall Street in Hanley from 1850 to 1882[3] until its bankruptcy and subsequent sale to Johnson Bros.[4]