Imagine if they took the Prince? I can never remember his name. Iranian military installations would turn into the largest fireworks show the world will ever see if they kidnap him. Certainly bombed by the UK, Australia, Poland, as well as us. We'll certainly jump into the fray. We haven't even gotten back at them for the Embassy hostage crisis yet.
Perhaps the Iranian government should consult with Argentina (or Italy, or Germany, or...) as to the consequences of underestimating Her Majesty's navy.