No, because North Korea couldn't possibly get a nuclear warhead to the UK. Even if one were extremely pro-nuclear arms, that would be a silly argument.
But can i ask, leaving our western viewpoint aside (difficult I know, I hold the same views) what right have we got to cast aspersions on a nation for just getting up to where, say, the US and UK were forty years ago? If I have a weapon, why should I stop you getting one too?