Wander00:
Like so many people on pprune,you are making wild assumptions. The chap on the left is not a nav but an ex-siggie (Neptunes and Shackletons). You will also note that none of the rest of us are wearing pilot's wings. That is because in those days, we didn't get our wings until after advanced training was complete. (In fact, one of the chaps in the photograph didn't make it). He failed his final handling check on the Varsity and became a nav.
As a matter of interest, the chap beside the cockpit was entitled to wear a nav brevet but it was of the RCAF variety (North Stars).
If you want thenames, send me a PM.