Joel Greenberg (born 1946) is an educational technology consultant and historian on the role of Bletchley Park in World War II.
[1][2] Greenberg gained a PhD degree in numerical mathematics from the University of Manchester (UMIST) in 1973.
For over 33 years, he worked for the Open University and held a number of director-level management positions.
He lectures and writes about Bletchley Park and its role in World War II.
He is author of biographies about Gordon Welchman, a key figure at Bletchley Park during WWII, and Alastair Denniston, the first operational head of GCHQ.