After leaving Durham I worked at the Atomic Energy Authority Establishment at Winfrith, Dorset, modelling North Sea oil reservoirs (Piper and Balmoral) for the Department of Energy. This meant oil-company work at civil-service salary so it wasn't too hard to return to research, but a blessing was meeting Chris Farmer.
Back in the School of Environmental Sciences at the University of East Anglia in a NERC project run by Geoffrey Boulton and Leslie Morland on ice-sheet modelling. During this period I first visited Kolumban Hutter at ETH Zurich. Various papers on ice-sheet numerics emerged from this project.
Geoffrey Boulton obtained a Chair and further money for to employ me in the Grant Institute at the University of Edinburgh. I worked for a year on a commercial project with Brian Horsfield, modelling diamond-tracer dispersion in Quebec, and we managed to explain the Mystery of the Missing Diamonds (phantom kimberlite pipes). During this period deforming beds became big, and I undertook a new project modelling deforming sub-glacial sediment beds. Papers on deforming beds, thermo-mechanical coupling similarity solutions emerged.
I then moved to the British
Antarctic Survey. Here I have worked on a large number of topics that
are listed in my home page.