The idiot Corbyn should remember that it was a Labour government, under Clement Attlee, which decided in 1947 that the 'manufacture of a British bomb was essential to our defence'.
Even though it was just beginning to show promise when cancelled, the lack of flexibility inherent in the air-launched Skybolt ALBM, plus the vulnerability of Blue Streak and Thor, meant that Polaris was a far more credible strategic deterrent. Blue Steel was really only a stand-off weapon, whereas Skybolt was a 1000 mile range strategic nuclear missile.
One proposal would have seen a 'Phase 6' Vulcan, with a MAUW some 70% greater than that of the Vulcan B2, carrying up to 6 Skybolts. But at least it would have had ejector seats for the rear crew, plus an off-duty rest section.
All came to nought though, for in 1968 the national deterrent responsibility was transferred to the Polaris submarine fleet and subsequently to Trident.
I thought Mrs May spoke well yesterday, although to emphasise that one reason for Trident's successor was to support workers in the defence industry, particularly around Rossyth, was a bit disproportionate - a bit like saying that we should have retained capital punishment in order to protect the livelihoods of rope makers and hangmen.