Iran launched unsuccessful attack on UK's Diego Garcia

https://www.bbc.com/news/articles/c5yljdgwppzo

Foreign secretary denounces 'reckless Iran threats' after missiles fired at Diego Garcia

Iran reportedly fired two ballistic missiles at Indian Ocean base, but neither reached the target.

Iran repeatedly stated that they will not attack any country's assets if they do not assist the US/Israel. Most European countries have refused to take part, the UK decided to help so this seems like a very easy situation to have avoided.

From TFA:

> It is understood the attempted air strike occurred before the UK agreed to let the US use British military bases to hit Iranian sites targeting shipping through the Strait of Hormuz.

Except that Starmer was lying - there have been photos of bombs being loaded onto US bombers going around for at least several days now.
What photos? And what reason would Starmer have to lie about it?