Makes you wonder why we had such a haphazard system for Vulcan rear crew.
And indeed for Valiant and Victor crews.
I am fairly sure a capsule escape system was looked into in the development stage of the Valiant, but money/practicability considerations soon put an end to that idea. There were also plans to fit ejector seats for the rear crew, and ejection trials were actually carried out, again on the Valiant, but once again money talked. The arguments surfaced from time to time, with questions even being asked in Parliament, but by the time I joined the Victor tanker force in 1971 this was just one of those things you accepted.