Now this has got the grey cells stirring! Didn't the canopy fly straight up and come down on someone trying to exit injuring their back? Or perhaps that was the one that landed wheels up at Finningley in early 1965 (couldn't have happened, shouldn't have happened but it did). My best mate married the captain's daughter - lovely girl!
I also remember some safety lecture where they had a very gory photo of some engineer whose arm had been penetrated by the canopy release pins. The story went that he had been sitting in the LHS doing something with the instruments and had been resting his left arm on the sill (the canopy was off). The emergency canopy release had activated and the bolt entered his arm at the elbow and exited at the wrist!
There was a fair amount of force in the emergency release system!!