He has remained at Imperial College ever since (apart from very frequent visits to the US), first as a lecturer 1983–1987, then reader 1987–1988 and professor since 1988.
He has remained connected to Imperial College since 1983 (with frequent trips to the US), initially holding the position of instructor from 1983 to 1987, then as a researcher from 1987 to 1988, and assuming the role of professor in 1988.