He lived the life of a bachelor
don as a
fellow of Trinity College, Cambridge, his
alma mater, from 1922 to 1975. He became a
research fellow of his college in 1922 and a college lecturer in 1928. He was disappointed to never hold a university
professorial chair or to reach the senior leadership of his college.
G. D. H. Cole identified a "Kitson Clark" school of historians revising the assessment of the
Anti-Corn Law League and the
Chartists. He delivered the
Ford Lectures in 1959–60, speaking on "The Making of Victorian England".
Jack Plumb, who disliked Kitson Clark, describes him as a reformer of the History Tripos and obstacle to
Lewis Namier, with various swipes. He served as chair of the Faculty Board of History from 1956 to 1958. Although he was a conservative in most of his views, he "played a prominent part" in enlarging the Historical Tripos syllabus to include
American history and the history of the
British Empire. He died the same year, on 8 December 1975 at his college in Cambridge. ==Selected works==