From 1964 to 1966 the head of state under the Constitution of 1964 was the queen of Malawi, Elizabeth II, who was also the monarch of other Commonwealth realms.
Malawi became a republic within the Commonwealth under the Constitution of 1966 and the monarch and governor-general were replaced by an executive president.
As Malawi became a republic before Glyn Jones, the former colonial governor, was replaced, this never happened.
In the event of a vacancy the chief justice would have served as the officer administering the government.
He was defeated in 1994, a year after his life term was abolished as part of Malawi's transition to democracy.