Co-authored with Robert Lomas:
- The Book Of Hiram: Freemasonry, Venus and the Secret Key to the Life of Jesus, April 2003
- Uriel's Machine: The Ancient Origins of Science, March 1999
- The Holy Grail, part of Mysteries Of The Ancient World: The Mysteries of the Ancient World Explored and Explained, June 1998
- The Second Messiah: Templars, The Turin Shroud and the Great Secret of Freemasonry, April 1997
- Pharaohs, Freemasons and the Discovery of the Secret Scrolls of Jesus, March 1996
Co-authored with Alan Butler
- Civilization One: The World is not as you thought it was. 2004
- Who Built the Moon?: 2005
- Solomon's Power Brokers: The Secrets of Freemasonry, the Church and the Illuminati. 2007
- Before the Pyramids. Cracking archaeology's greatest mystery. 2009