Thanks India Four Two. Very much appreciated.
For a number of years now I have had that very photograph in high(er) resolution thanks to SHY Stn Photog. I estimate it to be 1952 and the arrival of new Valetta trainers for the Nav School whilst the WWII era bombers remain on station.
Where it taken by a gun sight; then my specific area of interest would have been just below the cross hairs (right of an Oak tree) and the area that is now a Scout/Guide hut.
Pre 1996 and I am very interested.