Or vote laborious or convicts
The two 'main' parties are so close on the political compass they might as well be the same party. Alternating between them ad infinitum is madness. Only mad people repeat the same mistake over and over and expect the result to change.
Conservatives want "change"? wait what was your party name again? no kidding.
ICBM is not a valid threat to this country and hasn't been for many many years. The UK is a toothless lumbering wreck on the international stage. We need to call everyone back and completely reevaluate what we do. We're just a tiny island not the USA and even contributing 1/6 of what the US do is far more than our fair share. We spend far too much on 'defence' for all the wrong reasons.
Asteroids, if we see them coming I'm quite sure our current tridents have zero chance of hitting them because they don't have enough fuel to break orbit and reach a roid before it's too close to make a difference (it'll break up and scattershot the planet), leave that to the yanks or russians.
Power is a different issue and I agree that for the foreseeable future nuclear is important until solar & wind power catches up, and then we'll still need nuclear as backup for windless cloudy days. And do as some remote US towns do and use massive batteries to assist power peak usage and other deficits.
Luckily air con is a US fad for residential or we'd be properly screwed.
We can do it on wave/wind/solar but we're not quite there yet, maybe in 10-20 years with higher efficiency tech. OFC population caps/limits need to be seriously looked at like in China and Japan or power requirements and imports of all kinds will just continue climbing.