Kings and Queens of the UK
- Interactive time charts of the monarchs of the British Isles.
- http://www.pauls-room.com/uk/monarchy1.html

Royal History of England
- A guide to the Kings and Queens that have made a thousand years of history.
- http://royalhistory.com/

Early British Kingdoms
- The history of the post-Roman Celtic Kings and Kingdoms of Island of Britain, covering maps, chronologies, Royal and saintly biographies, pedigrees, archaeology, adversaries and King Arthur
- http://www.earlybritishkingdoms.com/index.html

The British Monarchy: History of the Monarchy
- Detailed histories of the monarchies of England and Scotland from inception to 1603 and of the United Kingdom to the present day. Includes family trees of royal houses (in PDF format).
- http://www.royal.gov.uk/output/Page5.asp