Very nice work, but perhaps a slight overreaction?
I'm not from Londom but I am from the UK. I'm sure that Americans are much more sensitive on the terrorism subject than we are, but to be honest, although it is a terrible act of violence, it's not shaken the foundations of the nation or anything. Around 50 people have died, and 700 injured. BUT, out of those 700 only 30 are still being treated and the rest are back home and are getting on with thier lives. While I have sympathy for the familes of those involved I personally think that, to London at least, it's nothing we can't recover from in a few weeks.
While I appreciate your desire to give a message to the people of London, and again I agree it is a terrible atrocity, I don't think we should act as though the city is in ruins. I was watching live reports the day after and people were still using the underground and the buses. Us as Brits don't take shit from no-one.