- This article is about the British police commander. For the American bishop please see John L. May
Superintendent John May was the first commander of the Metropolitan Police A Division, which policed the Whitehall area of London. Since the divisional station house was adjacent to the offices of the Joint Commissioners, Charles Rowan and Richard Mayne, May began to serve as unofficial second-in-command of the force, providing a link between the Commissioners and their men.