Files
I too did a foi request for the Trident that diverted on a belfast london flight in 1976 iirc.
In error I recieved an internal reply with grounds on how I might be granted release before the 40 years had expired. Later that day I received another email stating that I must destroy the previous email which I did without taking copies..I am not stupid.
After the 40 years expired I repeated my request and was told that they never had the file and it apparently had never existed.
Dont hold your breath.
It is similar wrt the french resistance files at Kew. My father was a translator for deGaulle and came out with a wild story that the resistance were betrayed to keep france fascist after the war. Now who would believe such a thing!
Met a researcher who had flown over to Kew and was refused access unless he had the death certificates. Slight problem that Auschwitz didnt issue them.