Bryant, Stewart, Perry, Brian and Williamson, Tom (2005) A "relict landscape" in south-east Hertfordshire:archaeological and topographic investigations in the Wormley area. Landscape History, 27 (1). pp. 5-16. ISSN 0143-3768
Percival, Sarah and Williamson, Tom (2005) Early Fields and Medieval Furlongs: Excavations at Creake Road, Burnham Sutton, Norfolk. Landscape, 6 (1). pp. 1-17.
Liddiard, Robert (2005) Castle Landscapes in Anglo-Norman East Anglia: A Regional Perspective. In: Medieval East Anglia. Boydell Press, pp. 33-51. ISBN 1843831511
Williamson, Thomas (2005) The disappearance of malaria from the East Anglian Fens. In: Health and Medicine in Rural Europe 1850-1945. Seminari D'Estudis Sobre la Ciencia, Valencia, pp. 249-262. ISBN 84-370-6334-5
Williamson, Thomas (2005) Domesday industries:mills, salt pans and fisheries. In: An Historical Atlas of Norfolk. Phillimore, Chichester, pp. 42-43. ISBN 1 86077 349 4
Williamson, Thomas (2005) Explaining regional landscapes:East Anglia and the Midlands in the Middle Ages. In: Medieval East Anglia. Boydell Press, Woodbridge, pp. 11-32. ISBN 1 84383 151 1
Williamson, Thomas (2005) Parks in the 18th and 19th centuries. In: An Historical Atlas of Norfolk. Phillimore, Chichester, pp. 122-123. ISBN 1 86077 349 4
Williamson, Thomas (2005) Place-name patterns. In: An Historical Atlas of Norfolk. UNSPECIFIED, Norwich, pp. 34-5. ISBN 1 86077 349 4
Williamson, Thomas (2005) Soil landscapes. In: An Historical Atlas of Norfolk. Phillimore, Chichester, pp. 8-9. ISBN 1 86077 349 4
Williamson, Thomas (2005) The survival of geometry:attitudes to early gardens and landscapes in provincial England in the eighteenth century. In: Histories of Garden Conservation. Leo Olschki, Florence, pp. 265-295. ISBN 88 22254309
Williamson, Thomas and Skipper, Kate (2005) Late Saxon population densities. In: An Historical Atlas of Norfolk. Phillimore, Chichester, pp. 38-9. ISBN 1 86077 349 4
Williamson, Thomas and Skipper, Kate (2005) Late Saxon social structure. In: An Historical Atlas of Norfolk. Phillimore, Chichester, pp. 40-41. ISBN 1 86077 349 4
Liddiard, Robert (2005) Castles in Context: A Social History of Fortification in England and Wales, 1066-1500. Windgather Press. ISBN 0954557522
Williamson, Tom (2005) Sandlands:The Suffolk Coast and Heaths. Windgather Press, Macclesfield. ISBN 1-905119-02-X
Williamson, Tom and Barrett, John (2005) Chatsworth: A Landscape History. Windgather Press, Macclesfield. ISBN 1905119011