Dr. Basil Jack Greenhill CB CMG (26 February 1920, in Bristol – 8 April 2003), was a diplomat, museum director and maritime historian. He went to Bristol Grammar School, before reading philosophy, politics and economics at Bristol University, but his time there was interrupted by wartime naval service. In the navy, he rose from rating to lieutenant, working at the radar research establishment at Malvern, and testing radar on bombers. He emerged in 1946 as a lieutenant, and on the completion of his degree he joined what became the Commonwealth Relations Office, where he stayed until 1966.
https://en.wikipedia.org/wiki/Basil_Greenhill