A forum member on key was asking about this pilot !
I found the following info...

Louis Percy Rowley

Confirmed as Pilot Officer 1 oct 1929

Promoted to Flying Officer 8 April 1930
And also sadly

Flight Lieutenant Louis Percy Rowley (27146)
Died 14 oct 1940
233 sqn

commemorated on Runnymede panel 4.
At that time 233 were operating Lockheed Hudson aircraft from Leuchars towards norway etc but my info does not specify cause of death,if it was an aircraft loss does anybody have any details please ?