Professional ecclesiastical historian, author and broadcaster for over 35 years, John has visited and recorded over 13,000 churches in England and Wales. He is a trustee of the oldest church preservation society in Britain - The Friends of Friendless Churches. Formerly an employee of The Churches Conservation Trust, John has also served as Photographic Curator of The Kempe Trust and Hon. Secretary of The Ledgerstone Survey of England and Wales. In his spare time he has written 12 books, leads specialist church tours and is a tutor at Denman College.