Jon Cannon Expert and writer on British heritage Jon Cannon writes about old places in general and teaches medieval architectural history in particular. He teaches at the University of Bristol and frequently gives talks and leads tours on the subject. He has also published several articles on Avebury, and contributes a regular profile of a historic area – from ancient prehistory to 20th century heritage – to British Archaeology magazine. He has worked in the heritage industry for nearly 15 years, including working for the Royal Commission on the Historical Monuments of England, and English Heritage. He went freelance in…