John Moss-Eccardt was educated at Frome Grammar School and Trinity College of Music, London. He later joined the staff of the Roman Baths Museum, Bath and in subsequent years carried out numerous excavations in North Hertfordshire and has for some years lectured for the University of Cambridge Board of Extra-Mural Studies and other organisations. He has published in county and national journals, and has translated articles for Thames and Hudson. He became curator of Letchworth Museum and Art Gallery in 1968 and set up a First Garden City Museum in the former offices of Parker and Unwin.