Chislehurst its earlier format corresponded to the letters IMP (for "imperial"). The Chislehurst civil parish formed an urban district of Kent from 1894 to 1934. In 1934 it became part of the Chislehurst and Sidcup Urban District, which was split in 1965 between the London boroughs of Bromley and Bexley. The Walsingham family, including Christopher Marlowe's patron, Sir Thomas Walsingham and Queen Elizabeth I's spymaster, Francis Walsingham, had a home in Scadbury Park, now a nature reserve in which the ruins of the house can still be seen. A water tower used to straddle the road from Chislehurst to Bromley until
Francis Walsingham the principal secretary's activities, Walsingham brought to it flair and ambition, and large sums of his own money. He cast his net more widely than others had done previously: expanding and exploiting links across the continent as well as in Constantinople and Algiers, and building and inserting contacts among Catholic exiles. Among his spies may have been the playwright Christopher Marlowe; Marlowe was in France in the mid-1580s and was acquainted with Walsingham's kinsman Thomas Walsingham. From 1571 onwards, Walsingham complained of ill health and often retired to his country estate for periods of recuperation. He complained of "sundry carnosities",