Aubrey Upjohn is the former headmaster of Malvern House Preparatory School, unfondly remembered by Bertie Wooster and Reginald "Kipper" Herring. Widower of Jane Mills (a friend of Aunt Dahlia), and stepfather to Phyllis Mills. Author of a book on preparatory schools which was reviewed in scathing terms by Kipper Herring in the Thursday Review.

Appears in Jeeves in the Offing and the short story, "Bramley Is So Bracing".