I've just noticed a couple of mistakes in my last post regarding the content of Conservative party general election manifestos in the 1970s, after checking the manifestos on the www.conservativemanifesto.com website.
The 1979 manifesto didn't mention a reactor type at all, so the Conservatives must have made the decision to build a PWR within a few months of winning the 1979 general election.
The October 1974 manifesto didn't actually specify that a Candu reactor was going to be built, it looks like it was going to be the British equivalent of a Candu, an SGHWR (steam generating heavy water reactor), described as the "British designed 'heavy water' system":
We will carry through the recently announced pilot programme of nuclear power stations based on the British designed 'heavy water' system. We believe that a larger nuclear programme must be initiated at an early date. In all nuclear matters, safety and reliability must be our paramount considerations."
To give a bit more information on why I think that £92.50/MWh figure is strongly related to the Lib Dems, I vaguely remembered that EDF were quoting a much lower figure for Hinkley Point than that a few years earlier when Labour was in power.
I searched around on the internet for the lower figure that used to be quoted, and it was actually £45/MWh in December 2008, given on this link:
But by October 2013, less than five years later, but with the Lib Dems in charge, the figure had risen to £92.50/MWh. That figure is also index-linked and applies to 2012, so it would be I reckon £98.52/MWh in 2016.
Ed Davey was given a knighthood for making these sort of arrangements for the provision of low carbon electricity for the UK. And if Chris Huhne, Davey's predecessor, hadn't fallen from grace, then he (Huhne) would presumably have got the knighthood for this.
Another big number which may come up in the near future in connection with Hinkley Point is that if the project ends up being cancelled, EDF has indicated that it wants £2.5 billion in compensation. The £2.5 billion figure presumably covers design changes they've had to make to satisfy the UK's nuclear regulator ONR, and preparatory work and site-specific work that has been carried out before the construction starts.