The Uk has no interest in attacking Iran. The UK principally wants Iranian oil which we are happily buying from them, and a lack of interference from Iran in Afghanistan. The UK and the US have nothing to fear from an Iranian nuclear capability as we have ICBMS and the usual MAD scenario applies - it will frankly be no different to China having nukes. Both the UK, EU and US are all broke - and cannot afford to fight a regional conflict. Bleat all you want - but Israel is alone in this one. It would be a good idea if Israel makes decisions based on that reality, rather than an assumption that its AIPACS and 'Friends of Israel' groups can overcome raw national interest.
Iran's Khamenei bans all further negotiations with U.S. (Reuters)
from the article: Former MI chief: Iran has enough material for 4 or 5 nuclear bombs