[2] His research focuses on the mechanisms of microbial metal-reduction, with emphasis on the environmental impact and biotechnological applications of metal-reducing bacteria.
[3][4][5][6][7][8][9] Current activities are supported by funds from NERC, BBSRC, EPSRC (The Engineering and Physical Sciences Research Council), the EU and industry.
He completed his thesis titled: The physiological state of microbial cells immobilised in hollow-fibre membrane bioreactors in 1993.
[4][11] His publications have featured in nature, ES&T, Chemical Geology, Mineralogical Magazine, and Science of the Total Environment.
[4][7][8][6][12][11] His research has investigated the role of U(V) during U(VI) bioreduction by Fe(III)-reducing bacteria Geobacter sulfurreducens and Shewanella oneidensis MR1.