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
Babington Plot restoration of the old religion. The plot was discovered by Elizabeth's spymaster Sir Francis Walsingham and used to entrap Mary for the purpose of removing her as a claimant to the English throne. The chief conspirators were Anthony Babington and John Ballard. Babington, a young recusant, was recruited by Ballard, a Jesuit priest who hoped to rescue the Scottish Queen. Working for Walsingham were double agents Robert Poley and Gilbert Gifford, as well as Thomas Phelippes, the last a spy agent and cryptanalyst. The turbulent Catholic deacon Gifford had been in Walsingham's service since the end of 1585 or the