This is the first study of a newly recognised pottery type, Ely ware. The first part of the report details excavations in Potters Lane Ely. The second widens the net, identifying Ely ware from other excavations in Ely and the surrounding area. The pottery dates from the 12th to the 15th centuries with three recognisable periods within this emerging. The report provides petrological and macroscopic description of Ely ware fabrics, and a well illustrated catalogue of different vessel forms and styles.