He was born at his parents' house in Mayfair; his father was a Conservative Party politician, and in 1942 was raised to the peerage as Baron Bruntisfield.
[1] Warrender grew up at Exton Hall in Rutland, and attended Ludgrove School and Eton College, where he displayed a talent for fencing.
He was Savage's torpedo control officer during the Battle of the North Cape, and helped sink the German battleship Scharnhorst, for which he was awarded the Distinguish Service Cross (DSC).
[2] Towards the end of the war he was stationed in Hong Kong, where he helped relieve the POW camp at Sham Shui Po and re-establish British administration.
[5] Warrender and his wife became a fixture on the Melbourne social scene, and counted several other noteworthies among their friends, including future prime minister Harold Holt.
[7] He returned to the aviation industry in later life, helping Freddie Laker in his unsuccessful attempt to break into the Australian market in the 1970s, and later chaired Australia World Airways, which purported to be a competitor for Qantas but never went into operation.