[1] A PhD student of Professor Richard Gilbert West[2] in the Subdepartment of Quaternary Research, University of Cambridge (1971–1974), he investigated the diversion of the River Thames from its course through Hertfordshire to its present course through London.
This multidisciplinary approach has led to him working throughout Britain, offshore areas, especially the North Sea, English Channel and the formation of the Strait of Dover, and neighbouring countries.
For an example of this work, see Britain's island heritage: reconstructing half a million years of history.
[4] Through co-operation with Jürgen Ehlers, his interest in glaciation has led to the publication of seven books.
[9] His publications include over 280 papers, 20 books, 8 charts and numerous reports and reviews.