This monograph is the definitive survey of iron tools and other fittings in use during the period c1066 to 1540AD. Exceptional in a north-western European context for its range and coverage of artefacts from both rural and urban excavations, much of the material described here was recovered during 'rescue' projects in the 1960s and 1970s funded by the State through the Ministry of Public Works and Buildings and their successors. The text contains almost everything necessary to identify, date and understand medieval iron objects. In scope and detail there is still no published parallel and, as such, it will be essential for almost any archaeologist working in later medieval archaeology, particularly in the fields of excavation, finds study, museums and research.