"This went nowhere. The Iranians calculated that the British would not do anything other than talk, and they are correct."
Yep.
Well, the iranians feel they got what they wanted when Hesbollah captured the israeli soldiers. A war that bombed lebanon backward 50 years so now the remaining sheep are properly conditioned against "the enemy". This is what they may want out of the UK/US now, to head off any revolutions.