Namier is best known for his work on the Parliament of Great Britain, in particular English politics in the 1760s. His principal conclusion of that decade was that there was no risk of an authoritarian disposal of British parliamentarism. By way of its very detailed study of individuals, this course of study caused substantial revision to accounts based on a party system. Namier's best-known works were "The Structure of Politics at the Accession of George III", "England in the Age of the American Revolution" and the "History of Parliament" series he edited later in his life with John Brooke.