Interesting story. I think this was one of only two completely succesful full crew abandonments from a Vulcan, the other being the one in 1971 up in Northumberland, or Yorkshire, which was also after an engine fire.* The Vs had a poor record for rear crew survivability, and this guy was certainly one of the lucky ones. The report above unfortunately just refers to "the navigator" so its not clear if this is the chap with the boots, or the Nav Radar, as the lady on the programme referred to her husband as the Nav Plotter.
We regularly practised abandoning the Victor in a crew trainer, but there was always a nagging doubt that in the event you'd end up bouncing along the fuselage. Never had to find out, fortunately!
*Goudie - this earlier one is the incident described in the opening of Vulcan 607, the story of Black Buck. The captain of that aircraft was Bob Alcock, who was also the captain of the Vulcan which crashed at Luqa, killing all the rear crew. I am pretty sure that Alcock was the only man to have successfully ejected from two Vulcans.