Gazetteer of Markets and Fairs in England and Wales to 1516
- A catalogue of the markets and fairs in England and Wales between c.900 and 1516, arranged by county and alphabetically; includes several indexes.
- http://www.history.ac.uk/cmh/gaz/

The Taxatio Database
- A database of the assessment for taxation carried out on the orders of Pope Nicholas IV in 1291-1292. For nearly 250 years virtually all ecclesiastical taxation of England and Wales was based on this extremely thorough and detailed assessment.
- http://www.hrionline.ac.uk/taxatio/

Early Medieval Britain and Ireland
- Explores the 'Dark Age' history of Britain, Ireland and their offshore islands between 350AD and 800AD.
- http://www.postroman.info/

Medieval Britain
- Comprehensive series of original articles and contemporary accounts.
- http://www.britannia.com/history/h60.html

The Domesday Book and Beyond
- Three essays on post-conquest England, by WF Maitland.
- http://socserv2.socsci.mcmaster.ca/~econ/ugcm/3ll3/maitland/domesday

Essays on the British Isles 1042-1330
- Personal website of Donald Stark, including essays written as part of a BA in Modern History at Oxford University.
- http://www.donaldstark.co.uk/EngC1012.html

Medieval History Timelines
- Mark Needham provides a companion to British medieval history, including timelines, maps, biographies, photographs and virtual reconstructions of abbeys, castles and other medieval buildings.
- http://www.btinternet.com/~timeref/

The Magna Carta
- Translation from the Latin of the first version of the Magna Carta, signed by King John at Runnymede in 1215. Links to glossary and Latin original text.
- http://www.magnacartaplus.org/magnacarta/index.htm

The Domesday Book Online
- Searchable, browsable by region, database of all 13,418 records from the original 1086 survey as well as background information on the book itself and on life at the time.
- http://www.domesdaybook.co.uk/

The Medieval World
- An encyclopaedia of British history 1066-1500.
- http://www.spartacus.schoolnet.co.uk/Medieval.htm