I'm afraid I kind of agree with Loosehead.
We can't store electricity efficiently enough to rely on renewables to plug the gap when the wind doesn't blow etc and relying on gas won't hit our carbon targets and the supply is increasingly likely to be from Russia with all that that entails.
However the big question with nuclear has always been who picks up the decomissioning bill.
The Government has said it won't and I can't see private industry building nuclear power stations with that sword over it's head so there's an impasse.
That's pretty much been the situation for the last 20 years and I've not yet heard anything that makes me think it's changed.
But if anybody thinks they can do better than the government - use the BBC calculator here:
http://news.bbc.co.uk/1/shared/spl/hi/uk/06/el ectricity_calc/html/1.stm
to say what energy mix we should use and let us all know the settings