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 Surety of the Queen's Person, passed by Parliament in March 1585, set up a legal process for trying any claimant to the throne implicated in plots against the Queen. The following month Mary, Queen of Scots, was placed in the strict custody of Sir Amias Paulet, a friend of Walsingham. At Christmas, she was moved to a moated manor house at Chartley. Walsingham instructed Paulet to open, read and pass to Mary unsealed any letters that she received, and to block any potential route for clandestine correspondence. In a successful attempt to entrap her, Walsingham arranged a single exception: a