Or maybe just a really big cock up on the terrorists' part? Maybe they constructed the bombs completely wrong so none would work properly. At the moment it is all just speculation. I also am completely disgusted that people could be annoyed that their journies will be disrupted. My Dad works near Green Park, which is completely closed and would be useless to him anyway since the Victoria line is shut down. I called him to tell him what happened, and he didn't go "WOE BETIDE ME, I might not get hope until late"; he was just concerned for people.