Prior to World War II, he was scientific assistant with the Road Research Laboratory.
Glyn started working for the Central Electricity Generating Board as an electrical engineer supervising installation work.
A deal was signed with Glyn of the CEGB and Charles Chevrier, director-general of Électricité de France for the construction of a £550 million 2000MW HVDC Cross-Channel link between England and France.
Each would cover the cost of four of the eight cables crossing the channel.
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