The construction of a new electricity substation at Northfleet, Kent provided an opportunity to investigate the archaeological remains at the site. Excavations in 1999 revealed field boundaries, paddocks and structural remains dating to the 11th and 12th centuries, possibly relating to the settlement known as Wenifalle in the late 12th century. The proximity of the Roman settlement at nearby Springhead has tended to distract from the later settlement in the area, so the results of this excavation represent a useful addition to the modest body of evidence relating to medieval settlement in North Kent. This short report includes a concise discussion of the project followed by reports on the artefactual evidence (Roman and medieval pottery, building materials, flint and worked stone and metalwork) and environmental remains.