Reality check
Sod all to do with nuclear weapons and everything to do with base load generation. Let's face it, renewables just aren't ever going to provide the energy we need in a consistent way. Hydro generation is already well exploited and coal and gas burning plants, aside from leaving us at the mercy of whoever now produces those two because it's sure as hell we don't any more, are a no-go because of the pollution they produce.
Of course, the greens are up in arms. They always are. They need a crusade somewhere to justify their existence, despite the fact that one of the founders of Greenpeace is also a founder member and officer of SONE (http://www.sone.org.uk/content/view/42/31/ - the officer list makes very interesting reading). If they had their way we'd be using renewables to light our homes and coal and wood to heat it. Can you imagine the CO2 output that would generate? Amazingly short-sighted. Ground loops just aren't economically viable or even practical given Britain's postage-stamp sized gardens and personal micro-generation only works if you're out in the middle of nowhere. Ask the Germans. They are, by law, able to sell energy back to the grid at ABOVE cost, so they could in theory make a profit on micro-generation. That they don't and that the energy companies still turn a profit should tell you all you need to know.
Nuclear is safe. The older Magnox reactors had a shine simply because the pressure vessel didn't enclose the entire primary loop (the heat exchanger was outside the pressure vessel). The later Magnox plants, such as Wylfa on Anglesey, don't shine much at all and they're now considered obsolete. We're now on AGR plants which are safe, clean and even these are only second generation reactors. And before anyone points to the leaking pipe at the reprocessing plant at Sellafield in 2005, let me just point out that the sump, which was designed for that eventuality, contained everything properly and safely.
People have been screaming "do something about global warming" for most of this decade, but when the government do something constructive and practical like this, the uninformed start bashing it because of what happened due to bad design and stupidity on the part of the shift supervisor in a Soviet-era built plant with the primary raison d'etre of producing Plutonium [1], not generating electricity. Let's be completely honest here, the mention of nuclear to Joe Soap in the UK immediately gets you the retort of "Chernobyl" without a second thought. Perhaps we need education rather than ecologists. Or just get a grip and THINK.
[1] The reason I mention this is not to bash the Soviets, just to point out that some of the design flaws in the Chernobyl RBMK reactor were due to the need for direct access to the fuel to remove Pu-239 at short notice. There was, after all, a reason why RBMK reactors were so perilous. If you want an in-depth analysis without knee-jerk reaction, see http://www-formal.stanford.edu/jmc/progress/chernobyl.html