During work to the main drainage system of Canterbury in 1868 the city engineer, James Pilbrow, observed a major Roman Street. The street was aligned at a slight tangent to the service trench and lay 1.22m below the street surface. At the south end of Castle Street the outer bailey ditch and a 2.8m wide wall of the medieval Canterbury Castle were located. The medieval city wall and ditch were also cut through. A large block of stone with complex moulding, possibly originating from the medieval Worthgate was located in this ditch.

Pilbrow, J., 1871, Discoveries made during excavations at Canterbury in 1868 (Serial). SKE30226.

Andrews, G., 1985, An Assessment. Gazetteer of Excavations. Prehistoric, Belgic and Roman Excavations (Monograph). SKE30006.