[jolj]

so I assume Britain received its imaging intelligence from the US as part of five eyes. or else I cannot explain how a nuclear armed country has skipped over one of the main prerequisite for missile targeting for 60 years

[mr_toad]

The UK nuclear arsenal has always been a strategic deterrent. The weapons in the UK arsenal (trident missiles with MIRV warheads) are designed to destroy cities, so unless the Russians have managed to conceal the locations of their major cities, targeting shouldn’t be an issue.

[jolj]

Presumably part of the nuclear doctrine is to take out your enemies nuclear launch sites before they launch

Also, even large cities have places which are better to target