After beginning a banking career, in the Second World War he went to Paris to help Noel Coward in a propaganda office, then returned to London to work in the War Cabinet office and later at the Ministry of Production.
After the war he joined Schroders. In 1956 he was appointed Minister of State for Colonial Affairs in Harold Macmillan's government.
John David Drummond, banker and politician: born London 13 May 1907; styled Viscount Strathallan 1937-51, succeeded 1951 as 17th Earl of Perth; partner, Schroder's 1945-56; Representative Peer for Scotland 1952-63; Minister of State for Colonial Affairs 1957-62; PC 1957; First Crown Estate Commissioner 1962-77; Chairman, Ditchley Foundation 1963-66; Chairman, Reviewing Committee on Export of Works of Art 1972-76;
married 1934 Nancy Fincke (died 1996; two sons); died Cargill, Perthshire 25 November 2002.