I have had some difficulty tracking down information about him, but I have now had some success.
Here is his photo. There is some resemblance to early photos of my father Douglas.
I located his death certificate from Colin Campbell, one of my father's cousins. This specifies he died on 26 July 1942. His RAF Sergeant number was 1100642.
The details were that he was "Accidentally killed when the glider of which he was the pilot under instruction crashed out of control own to structural failure."
He buried at Seafield Cemetary in Edinburgh, Scotland. Plot: Sec. E. Grave 119. [link]
His death had a major impact in my family. Seventy years later, his descendants still remember it. This single death highlights to me the long ramifications that war and associated deaths have.
Rest In Peace, Peter Hay Campbell.