Details at Tim Worstall who links to news and blogs.
This does not, at first reading, seem as serious. No deaths reported as I write. However, the co-ordination is worrying. The speculation is off to a huge start - copycat? Right wing extremists? Al-Qaeda farm team?
My own speculation is that this may have been a botched set of suicide bombers. Bad explosive. After the first bombings no one would think they were going to plant bombs in the tube unobserved by the CCTV which cover London. Tim has a quote from Sky News worth sharing
He told me he had seen a man carrying a rucksack which suddenly exploded. It was a minor explosion but enough to blow open his rucksack. Everyone rushed from the carriage. People evacuated very quickly. There was no panic.Now, these bastards will be caught and, with luck, are going to talk. And, with more luck, they will be the B-team of bombers from the same origin as the A-Team two weeks ago. Then the Brits and the rest of us will have a bit of information on methods and planning.
"I didn't see anyone injured but there was shock and fright.
"There was a smell of smoke."
"The man who was holding the rucksack looked extremely dismayed."
sky news via tim worstall
The danger here, bad as bombs are, is what was suggested by the bobbies in Hazmat suits.london bombings