[3] Biddle and his wife Birthe Kjølbye-Biddle examined Jerusalem's Church of the Holy Sepulchre to explore the long-rumoured site of the tomb where Jesus was brought after his crucifixion.
[citation needed] Proceeding backward from the present, they examined the site in detail, its appearances, and its destructions and rebuilding through the centuries, a survey that was constructed without restrictions, using traditional methods of architectural archaeology and the most recent techniques of photogrammetry.
[4] Biddle was appointed Officer of the Order of the British Empire (OBE) in the 1997 New Year Honours 'for services to the Royal Commission on the Historical Monuments of England'.
[9] He was promoted to Commander of the Order of the British Empire (CBE) in the 2014 Birthday Honours for services to archaeology.
The third Sackler lecture in honour of Norman Hammond was given on 27 February 2017 at Peterhouse by Biddle on "Capital Considerations: Winchester and the Birth of Urban Archaeology".