Robert Armstrong, Baron Armstrong of Ilminster

Robert Temple Armstrong, Baron Armstrong of Ilminster, (30 March 1927 – 3 April 2020) was a British Lord Temporal and former civil servant. From 1970 to 1975 he was the Principal Private Secretary to the Prime Minister. He was knighted in 1978. From 1979 to 1987, he served as Cabinet Secretary under Margaret Thatcher.