In contrast, they have no domestic uranium sources, right? And while an idea like "One or two nuclear plants could provide for 100% of demand" sounds good, that means there's two locations to target to bring the entire grid down, which has strategic consequences.
I'm pretty pro-nuclear and I concur that for the UK, I don't think the risk/reward chart actually pans out the way they want it to.
Gas is very expensive here, we don't buy any from Putin, we import it from the US where it is liquefied, shipped thousands of miles and then un-liquefied for end use.
Our businesses are dying trying to compete with countries that pay multiples less for energy than we do.
More nuclear would give us long-term, uninterrupted supply - especially since small modular reactors can be located where the power is needed without needing the national infrastructure to be upgraded.