Watt: Likely George Ernest Watt.
http://www.cambridgeairforce.org.nz/George_Watt.html
"In 1938 George moved to the Imperial College and was promoted to Squadron Leader on the 1st of February 1939. He remained at the college till war broke out, and he was then posted to Farnborough to become an experimental test pilot."
Also mentioned several times in this for research on G forces on pilots:
https://www.rafmuseum.org.uk/documen...n_Medicine.pdf