He went on to become Chief Physicist with the United Bristol Hospitals NHS Trust and Chair of Physics and Engineering in Medicine at Bristol University before returning to Cardiff.
Aeth ymlaen i fod yn Brif Ffisegydd gydag Ymddiriedolaeth GIG Ysbytai Unedig Bryste a Chadeirydd Ffiseg a Pheirianneg mewn Meddygaeth ym Mhrifysgol Bryste, cyn dychwelyd i Gaerdydd.