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 Privy Seal. Walsingham acquired a Surrey county seat in Parliament from 1572 that he retained until his death, but he was not a major parliamentarian. He was knighted on 1 December 1577, and held the sinecure posts of Recorder of Colchester, "custos rotulorum" of Hampshire, and High Steward of Salisbury, Ipswich and Winchester. He was appointed Chancellor of the Order of the Garter from 22 April 1578 until succeeded by Sir Amias Paulet in June 1587, when he became Chancellor of the Duchy of Lancaster in addition to principal secretary. The duties of the principal secretary were not defined formally,