Harris became general director of the Institute of Economic Affairs (IEA) in 1957. He remained in this post until 1988, when he stepped down to become its chairman and was replaced by Graham Mather. Harris was then a founding president of the IEA from 1990 to his death.
Harris became the general director of the Institute of Economic Affairs (IEA) in 1957. He remained in this position until 1988, when he stepped down to become its chairman and was replaced by Graham Mather. Harris then served as a founding president of the IEA from 1990 until his death.