Good morning,
I presume you will already have found details of the Pennfield Parish Military History Society.
Such a fantastic resource and a mine of information with many course photographs as someone else mentioned. Maybe your relative took my Uncles course photo.
I had a photo but did not know where it was taken until l stumbled across the Pennfield site and there were others with similar backgrounds.
My Uncle was posted there from No.9 Bombing and Gunnery school at Mont-Joli, Quebec and was then on a further course for air gunners before he got his stripes.
See my original post, search "21 Brave Airmen".
I tried to search for details of all 21 airmen on the photo with good success.
My Uncle ended up at RAF Grimsby (Waltham) as a Lancaster rear gunner and was lost without trace on a raid to Berlin in September 1943.
I still have the fateful telegram that reported him missing.
His story is in a book, Battle of Berlin, Failed to Return. (first chapter).
Good luck with your research.