Career
Lewis received degrees in mathematics and statistics from Sheffield University in the 1960s. In January 2008, he retired as a lecturer in Quantitative Research Methods from Oxford Brookes University. He was formerly a lecturer at the University of the West of England where the Duckworth-Lewis method originated from an undergraduate final-year project
He is also a former chairman of the Western Operational Research Discussion Society and was a keynote speaker at the Second Institute for Mathematics and its Applications International Conference on Mathematics in Sport in 2009.