In 1970, as a callow seventeen-and-a-half-year old, I first set foot in Charterhouse Square in black cord jacket, old school tie and desert boots, the fashion at the time. I expect I was wearing trouserings of some sort and I was carrying an overlarge brief case my dear mother had given to her doctor to be. I stepped into the formidable presence of Professor Rotblat who interviewed all of his 1st M.B. students personally.