He was well known for his invention of numerous analog circuit concepts, holding over 100 patents worldwide, and for the discovery of the Translinear Principle.
During the 1950s he pursued an interest in solid-state devices while at Mullard, working on the development of early transistors, and later, the first-generation planar ICs.
He returned to England in 1970, where he was Group Leader at Plessey Research Laboratories, managing a team developing OCR systems and integrated circuits (ICs) for communications applications.
From 1972-1977 he consulted for Analog Devices Inc., Wilmington, MA, designing several ICs embodying novel nonlinear concepts.
[citation needed] He held an Honorary Doctorate from Oregon State University.