It really isn't. The UK has very little in the way of power projection. Sure they could lob a few bombs and fire a few cruise missiles, that's not going to make the Moroccan government turn on solar power. All it will do is make them and the Moroccan people very, very angry.
If you want to take a country's resources by force, there is no option short of a ground campaign. Without a civil war in Morocco (that the UK couldn't make happen even if they tried), there is no way for them to put boots on the ground. The only way would be to cut a deal with Algeria or Mauritania for a ground invasion (not happening!), or to stage some kind of amphibious landing.
I thought that by now people would have understood that you can't win a war through air power only.