Dixon was the Principal Private Secretary to the Foreign Secretary between 1943 and 1948. He held the post of Ambassador to Czechoslovakia (1948–1950) and he was invested as Knight Commander of the Order of St. Michael and St. George in 1950.
Dixon acted as the Principal Private Secretary for the Foreign Secretary from 1943 to 1948. He then served as Ambassador to Czechoslovakia (1948–1950) and was later appointed Knight Commander of the Order of St. Michael and St. George in 1950.