A long time before my time on ULAS! In July 1965 I was sitting my GCE 'O'-levels, but would far sooner have been Chipumunking!
Any staff member on ULAS in those days would have been posted at least a year before I arrived, so I don't recognise the instructor in that photo. Neither did I fly WD391.
A bit odd that they wore Mae Wests when flying from Wattisham - it's not that close to the sea.