I think you will find that we are at the top table in the UN and a member of the Commonwealth which contains quite a few countries. Besides if we are not that important why is Haaretz reporting Cameron as saying Israel attacking Iran would be idiotic. Besides has Netanyahu had a ride in Air Force 1? Or has Israel got a runway capable of supporting B52's? Oh and then there is Flyingdales if the US had to choose between the UK and Israel, they wouldn't hesitate. Israel would be thrown into the long grass.
UN aid chief says no warring parties observed Yemen truce (Reuters)
from the article: U.K's Cameron: No justification for Israeli attack on Iran