Letter from Prof Rudolph E Peierls, Department of Mathematical Physics, Birmingham University, to Simon, on an article in the 'Sunday Express', titled 'Perturbed Men', which featured a photograph of Simon The article suggested that in light of nuclear secrets being passed to the Soviet Union, foreign born scientists in the UK were nervous of being accused of spying. Peierls's letter encloses his reply to the 'Sunday Express' denying this. 9 November 1950