 With his dissertation “Sequential Analysis of Components of Variance in Hierarchical Classifications”, supervised by Norman Lloyd Johnson, he earned his PhD in 1959.Then he worked as a Research Assistant at the University College London, as Statistician in the Atomic Power Consortium, London, and during 1960/61 as an Assistant Professor of Mathematics at Chelsea College London.Jointly with Harold Adolph Freeman he completed a monograph “An Introduction to Sequential Experimentation”, published 1961 as a US Army Technical Report.