Sadly chaps, building any new nuclear power stations even if they were given the green light by the tree hugging brigade, would now be 2-3 times the cost of the last one built (Sizewell B), because we would have to 'buy-in' the expertise to design and build...USA, France etc. In fact, that did happen somewhat with Sizewell B.
This is because 90% of the UK nuclear design and build experts has either retired or are dead now, or like me, moved into other fields, because of succesive Govts. sitting on the fence over Nuclear Power. The Institution of Civil Engineers, and the Institution of mechanical Engineers has been warning of this for years.
And even if a commitment was to be given tomorrow, the public enquiry fiasco would take the best part of 5 years probably, and then it would be at least another 10 years or maybe more after that, before the first of the new stations would be on-line.