In 1983 he was awarded a Royal Society University Research Fellowship which he held in Oxford until 1989, when he joined the Chemistry Faculty at the University of California, Irvine. He moved to his present position in 1993. His interests are in biological redox chemistry, in particular the application of dynamic electrochemical techniques in studies of complex electron-transfer and catalytic reactions in proteins (protein film voltammetry), and most recently the mechanisms and exploitation of biological hydrogen cycling. He was the president of the Society of Biological Inorganic Chemistry (SBIC) from 2004 to 2006. With Katherine Blundell he co-edited the book Energy... beyond Oil.[6]
^Fraser A. Armstrong, H. Allen O. Hill, Nicholas J. Walton: Direct electrochemistry of redox proteins. In: Accounts of Chemical Research. 21, 1988, p 407–413, doi:10.1021/ar00155a004.