Now the background, of course, to being able to achieve this was to have the facilities which had to be built and my old research supervisor from Melbourne, Stuart Anderson, was the deputy head of the chemistry department there. And he had suggested that I apply for a senior Harwell research fellowship; it was a post-doctoral fellowship; it was well-paid and was a very free-ranging fellowship, and I could do whatever research I wanted. So I applied for this and fortunately got such a fellowship, went over to Harwell and established myself there. My overall aim was to pick up the techniques of radiochemistry which I thought might be useful in some of the work that I was doing. And so part of the work that I did was actually to join the Isotope School and learn how to handle safely radioactive materials – how to make measurements; the instrumentation and so forth. So that was another technique, if you like, in my armoury for doing research.