Claus Adolf Moser, Baron Moser (born 24 November 1922 in Berlin, Germany) is a British statistician who has made major contributions in both academia and the Civil Service. He prides himself rather on being a non-mathematical statistician, and says that the thing that frightened him most in his life was when Maurice Kendall asked him to teach a course on analysis of variance at the LSE.
Claus Moser moved to England with his parents in 1936. He went to Frensham Heights School and the London School of Economics (LSE). Despite being Jewish, in 1940 he was interned as an enemy alien in Huyton Camp. After four months he was released and served in the Royal Air Force, 1943–1946. He then returned to LSE as Assistant Lecturer, then Lecturer, in Statistics, 1946–1955; Reader in Social Statistics, 1955–1961; Professor of Social Statistics, 1961–1970; Visiting Professor of Social Statistics, 1970–1975.
In 1965, he applied for a job at the Central Statistical Office but was rejected, as a former enemy alien. However, this did not seem to be a problem when in 1967 Harold Wilson appointed him Director of the Central Statistical Office. He was made a Knight Commander of the Bath in 1973. He resigned as Director in 1978.
He has held a very wide variety of other posts.