 He was elected Fellow of the British Academy in 1976, and President of the Royal Historical Society between 1984 and 1988.Aylmer's most substantial historical contribution was his trilogy on seventeenth-century administration before, during and after the Civil War.Alymer brought a prosopographical method to the study of 17th century bureaucracy, as well as an interest in the political sociology of bureaucracy in Max Weber, James Burnham and Milovan Djilas.