Hummingfrog
I was really interested by this part of your post -"At this point, September l943 at the very moment I might have got my hands on a ‘Spit’ or ‘Hurri’ my life again changed completely. During my leave I received a telegram from ‘those on high’ informing me that my posting was cancelled and I was to be reposted to No.2 FIS (Flying Instructors School) based at Montrose, Scotland."
Dad was born in Montrose, and I was born about 5 miles further north. Dad was in the Home Guard, and had one or two tales about RAF Montrose.
Can you ask your Dad if he remembers where he was billeted while he was there? The reason I ask is that the RAF took over Lauriston Castle during WWII, and my grandparents lived in the coachman's house at the stables. I believe they had great fun with some of the RAF chaps during this time.
RAF Montrose is now a museum. Here's a link to their website -
Montrose Air Station Heritage Centre. Britain's first operational military airfield.
I have some photos I took during a visit last year if you want to see them.