This volume describes the pottery-making depot attached to the pre-Flavian vexillation fortress of Longthorpe near Peterborough and and throws light on the problems of supply of the Roman army during the conquest campaigns. It contains a detailed report on excavations at a group of sites lying east and south-east of the Roman fortress of Longthorpe, Cambridgeshire. A second section reports on the finds from the excavations.

This volume of the JRPS celebrates the career of Kay Hartley, described by Sheppard Frere as "the oracle on Romano-British mortaria." She has been associated with a number of important excavations, such as Heronbridge and Much Hadham, and it has been said of her that "no serious excavation report of the Roman period can be completed without either a contribution from her, or a reference to her work."