Excerpts from Books and Wikipedia
"London experienced the horrors of suicide bombers the first time on July 7. There were four attacks: three on underground trains--one near Liverpool Street station, one in Edgeware Road station, and one between King's Cross and Russell Square stations--and one on the bus in Tavistock Square. . . . A previously unknown Islamic group was quick to claim responsibility. . . . The British were left to ponder how it was possible for ordinary British Muslims to become so alienated from their country that they would commit mass murder." [Furtado: 1001 Days]