Keith, I would have thought even you could understand what happened at Woolwich. Two guys with their heads full of crazy ideology murdered a soldier in some kind of desperate retaliation for what British soldiers have been doing elsewhere. Understanding does not mean condoning.
You obviously thought one of your posts was worth repeating, feeble as it was. Within it, again repetitiously, you wanted to know whom I would expect to be on the receiving end of any violent response provoked by violent American-British invasions. I didn't answer because the answer was obvious, but let me spell it out: I don't know. Often British and American intelligence agencies don't know, which is why it is hard to defend against. People who, rightly or wrongly, feel desperate can be very unpredictable.
And by the way, the assault on Iraq was opposed by a majority in the UK and it provoked the biggest demonstration ever in the UK. We didn't throw out the government, either then or at the subsequent general election. That's no big deal if our representative democracy over-rides the popular mood on (say) dog-licensing or daylight saving. But when it results in vast numbers of needless fatalities and the massive destabilising of a whole region, expect some blowback, both legitimate and illegitimate.