“Operation Pluto” was planned by__________?

Operation Pluto (Pipe-Lines Under The Ocean) was a Second World War operation by British engineers, oil companies, and the British Armed Forces; to construct undersea oil pipelines under the English Channel between England and France in support of Operation Overlord, the Allied invasion of Normandy in June 1944.

https://d-dayrevisited.co.uk/d-day-history/planning-and-preparation/operation-pluto/