Stuart Duncan Macdonald Jack CVO (born 8 June 1949) is a retired British Diplomat, latterly serving as the Governor of the Cayman Islands from 2005 until 2009.Educated at Westcliff High School for Boys; and then Merton College, Oxford, Jack joined the Foreign and Commonwealth Office in 1972 after serving with the VSO is Laos. After joining the Eastern European and Soviet Department, Jack took posts in Tokyo and Moscow.