He was the son of Sir William Haldane and his wife Edith Nelson.
In the summer of 1932 he was a member of a Fabian Society group which visited the Soviet Union, where he studied power stations and energy supply.
In the following year he contributed the chapter on "Power and Industrial Developments" to a book entitled Twelve Studies in Soviet Russia edited by Margaret Cole.
[1] In 1948 he was President of the Institution of Electrical Engineers and won its James Watt Gold Medal in 1953.
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