 She is notable for her analysis of the Llandaff Charters.She has a special interest in the economic and social structure of Western European pre-industrial rural communities and the ways in which they used land and for fifteen years ran, with Dr Grenville Astill, the "East Brittany Survey", a multidisciplinary research programme into settlement and land-use changes.Much of her work has involved collaboration with others and she believes in the importance of fieldwork in teaching and research.